Are you ready to move beyond basic "if" clauses? Test your advanced grammar skills by mastering nuanced conditional phrases like **supposing**, **provided that**, **on condition that**, **even if**, and **but for**.
> See a quick refresher inside!


Basics. Conditional Conjunctions: Supposing, Provided That, and Even If

Do you know how to express an unfulfilled plan from the past or calculate exact durations leading up to a future deadline? Test your advanced grammar skills by mastering the **future perfect continuous**, **future in the past**, and nuanced expectation phrases like **bound to** and **on the verge of**.
> See a quick refresher inside!


Basics. Advanced Future Forms and Future in the Past

Can you spot a hypothetical situation when the word "if" is nowhere to be found? Navigate 10 tricky scenarios by identifying **implied conditionals** hidden within phrases like **but for**, **otherwise**, **given**, and **implied subjects**.
> See a quick refresher inside!


Basics. Implied Conditionals: But For, Without, and Otherwise

Do you know how to drop the "if" to make your English sound more formal and dramatic? Master the art of inversion by testing your knowledge of **first conditionals with should**, **second conditionals with were**, **third conditionals with had**, and complex **mixed conditionals**.
> See a quick refresher inside!


Basics. Advanced Inverted Conditionals: Should, Were, and Had

Are you confused about when to use "needn't have done" instead of "didn't need to do"? Master the trickiest rules of English verbs by testing yourself on **marginal modals**, **past regrets with ought to**, and the **modal forms of dare and need**.
> See a quick refresher inside!


Basics. Marginal Modals: Dare, Need, and Ought To

Do you know the difference between an action that *shouldn't have been done* and one that *needn't have been done*? Put your advanced grammar skills to the test with **continuous deductions**, **passive obligations**, and **unnecessary past actions**.
> See a quick refresher inside!


Basics. Complex Past Modals: Continuous and Passive Forms

Can you clearly explain a chaotic sequence of past events without losing your listener? Put your storytelling skills to the test by mastering the **Past Simple**, **Past Continuous**, **Past Perfect**, and **Past Perfect Continuous** tenses in dramatic, real-world contexts.
> See a quick refresher inside!


Basics. Narrative Tenses in Context

Can you confidently use present verbs to describe tomorrow's plans? Test your advanced grammar skills by mastering **scheduled events**, **fixed personal arrangements**, and **future time clauses** across high-stakes scenarios.
> See a quick refresher inside!


Basics. Present Tenses for Future Events

Have you ever wondered why we say "be that as it may" instead of "is that as it may"? Master the remnants of the English subjunctive mood by practicing **fixed expressions**, **concessive phrases**, and **hypothetical idioms** across 10 challenging scenarios.
> See a quick refresher inside!


Basics. Subjunctive in Fixed Expressions

Why do we say "I demand that he *be* fired" instead of "is fired"? The formal subjunctive mood ignores standard conjugation rules to express urgency, necessity, or strict demands. Test your advanced grammar skills by applying the **active and passive subjunctive**, **negative subjunctive forms**, and the **continuous subjunctive**.
> See a quick refresher inside!


Basics. The Subjunctive in That-Clauses

Do you know when to use "Were I to go" instead of "If I was going"? Master the art of formal hypotheticals by testing yourself on **subject-verb inversion**, the **"were to" future conditional**, and tricky **mixed conditionals**.
> See a quick refresher inside!


Basics. The Were-Subjunctive in Conditionals

Do you know when a strict rule requires *provided that* or when to use *unless* instead of *if not*? Master the logic of condition clauses by navigating quirky scenarios with time travelers, secret agents, and eccentric professors. Test your grasp of **if**, **unless**, and **provided that** across 12 interactive questions.
> See a quick refresher inside!


Condition Clauses: If, Unless, and Provided That

Do you know when to use a semicolon before **however**, or when to drop **though** at the end of a sentence? Master the tricky punctuation and placement of **contrast clauses** by navigating savage restaurant reviews, passive-aggressive roommate notes, and clumsy burglars.
> See a quick refresher inside!


Contrast Clauses: Although, However, and Though

Why did the time traveler arrive three centuries late? Master explaining *why* things happen by testing your knowledge of **adverb clauses of reason**, distinguishing **because vs. because of**, applying correct **punctuation rules**, and identifying **reason vs. time** contexts.
> See a quick refresher inside!


Adverb Clauses of Reason: Because, Since, and As

When do you stop whisking? *Until* your arm goes numb, obviously. Master the timing of events by choosing the right **time conjunctions**, applying correct **verb tenses in future time clauses**, and sequencing **past events** properly.

> See a quick refresher inside!



Adverb Clauses of Time: When, Before, After, Until

Can you spot the error: "The news will **effect** they're decision"? Master the differences between **their/there/they're**, **affect/effect**, **your/you're**, and **its/it's** across 10 real-world scenarios.
> See a quick refresher inside!


Tricky Homophones: Their vs. There, Affect vs. Effect

Do you know when to say **an hour** but **a university**? Test yourself on **a/an sound rules**, **the vs. zero article**, and **first vs. second mention** across 14 everyday scenarios.
> See a quick refresher inside!


Articles: A, An, The & Zero Article

When using articles, there are a number of ways to communicate specific shades of meanings with articles. Related rules for proper names don't make things easier. To complicate things even further, there are other determiners occasionally taking the place of articles. For instance, _some_ and _no_ function like articles, but behave somewhat differently with uncountable nouns.

Answer the questions to check if you understand the nuances!


Articles Advanced

Articles are ubiquitous; _the_ is the most common word in English, accounting for 7% of all words.

The concept of definiteness is hard to grasp even for advanced learners who don’t have articles in their first language. A spectacular example of such confusion is the occasion with Ivana Trump. She explained, “Yes, you know the outcome — ‘The Donald’ just slipped off the tongue, and now it seems to be making its ways to the political history books.”

Take the challenge to find out if articles are easy for you!


Articles Basics

Ever wonder if you should say *a* cat or *the* cat, or whether to use *walk* or *walked*? Small grammar details make a massive difference in how natural your English sounds! Test your everyday accuracy with **definite and indefinite articles**, **regular plural nouns**, and **simple past and present verb tenses**.
> See a quick refresher inside!


The Big 3 for Vietnamese Speakers: Articles, Plurals, and Verb Tense

Do you "depend on" or "depend from" the weather forecast? Master some of the trickiest parts of English by practicing **dependent prepositions**, **articles for professions and generalisations**, and **pronouns for inanimate objects**.
> See a quick refresher inside!


Slavic Speakers' Top Errors: Articles, Prepositions, and Pronouns

Do you say "I am teacher" or "I am a teacher"? Master these tricky rules by testing your knowledge on **professions**, **abstract nouns**, **generalizations**, and **specific vs. general contexts**.
> See a quick refresher inside!


Articles Bootcamp for Romance Language Speakers: a, the, and Zero Article

Test your **Basics: A/An and The: Basic Rules** skills with 11 questions at **easy** level.


Basic Rules for A, An, and The

Test your **Basics: The - Specific Uses** skills with 12 questions at **medium** level.


Specific Uses of the Definite Article

Test your **Basics: Zero Article - No Article Needed** skills with 12 questions at **medium** level.


The Zero Article: When No Article Is Needed

Test your **Basics: Can and Could - Ability and Permission** skills with 12 questions at **easy** level.


Basics: Can and Could - Ability and Permission

Test your **Basics: Compound Nouns** skills with 11 questions at **medium** level.


Compound Nouns: Formation, Spacing, and Plurals

Test your **Basics: Countable and Uncountable Nouns 1** skills with 12 questions at **easy** level.


Countable and Uncountable Nouns: The Basics

Test your **Basics: Countable and Uncountable Nouns 2** skills with 11 questions at **medium** level.


Countable and Uncountable Nouns: Quantifiers and Meaning Shifts

Test your **Basics: For, Since, and Ago** skills with 12 questions at **easy** level.


Basics: For, Since, and Ago

Did you know you can use a present tense to talk about your weekend plans? Master the basics of using the **present continuous** for **future arrangements**, **fixed plans**, and **scheduled appointments**.
> See a quick refresher inside!


Basics: Present Continuous for Future Arrangements

Test your **Basics: Going To: Plans and Predictions** skills with 12 questions at **easy** level.


Basics: Going To - Future Plans and Predictions

Test your **Basics: Imperatives - Commands and Instructions** skills with 12 questions at **easy** level.


Basic Imperatives: Commands and Instructions

Test your **Basics: Indirect Questions** skills with 12 questions at **medium** level.


Forming Indirect Questions

Are you completely sure, or is it just a possibility? Learn how to accurately express uncertainty by mastering **affirmative and negative possibility**, **future predictions**, and the **modal + base verb rule**.
> See a quick refresher inside!


Basics: May and Might - Expressing Possibility

Test your **Basics: Must and Have To - Obligation** skills with 12 questions at **easy** level.


Must vs. Have To: Expressing Obligation

Test your **Basics: Mustn't vs. Don't Have To** skills with 10 questions at **medium** level.


Mustn't vs. Don't Have To

Test your **Basics: No, None, Any** skills with 12 questions at **medium** level.


Quantifiers: No, None, and Any

Test your **Basics: Past Continuous vs. Past Simple** skills with 15 questions at **easy** level.


Basics: Past Continuous vs. Past Simple

What were you doing at 8 PM last night? Master the art of describing past ongoing actions by practicing **interrupted actions**, **parallel events**, and **specific past times**.
> See a quick refresher inside!


Basics: Past Continuous - Form and Use

Test your **Past Simple: Irregular Verbs** skills with 15 questions at **easy** level.


Basics: Past Simple - Irregular Verbs

Test your **Past Simple: Regular Verbs (worked/got/went)** skills with 15 questions at **easy** level.


Basics: Past Simple - Regular and Irregular Verbs

Test your **Verb "To Be": Past Forms (was/were)** skills with 15 questions at **easy** level.


Basics: Past Forms of the Verb "To Be": Was vs. Were

Is that **your** snack, or is it **mine**? Master the basics of ownership by practicing the difference between **possessive adjectives** and **possessive pronouns** across 12 fun scenarios.
> See a quick refresher inside!


Possessive Adjectives and Pronouns

Test your **Basics: Possessive 's and Of** skills with 12 questions at **easy** level.


Possessive 's and Of

Do you know the difference between what you do every day and what you are doing right now? Test your grammar skills by choosing between **habits and routines** and **actions happening at the moment** in this 15-question challenge.

> See a quick refresher inside!



Basics: Present Continuous vs. Present Simple

Test your **Present Continuous: Form and Use (I am doing)** skills with 15 questions at **easy** level.


Basics: Present Continuous

Test your **Basics: Present Perfect - How Long Have You...?** skills with 11 questions at **easy** level.


Basics: Present Perfect - How Long Have You...?

Have you ever wondered how to talk about your past experiences without saying exactly when they happened? Master the basics of the present perfect tense by practicing **subject-verb agreement**, **irregular past participles**, and **interrogative forms** across everyday scenarios like travel, food, and chores.
> See a quick refresher inside!


Basics: Introduction to the Present Perfect

Test your **Basics: Present Perfect vs. Past Simple** skills with 12 questions at **easy** level.


Basics: Present Perfect vs. Past Simple

Test your **Present Simple: Form and Use (I do/work/like)** skills with 15 questions at **easy** level.


Basics: Present Simple - Form and Use

Test your **Verb "To Be": Present Forms (am/is/are)** skills with 15 questions at **easy** level.


Basics: Present Forms of the Verb "To Be"

Do you know when to use "I" instead of "me" in a sentence? Master the basics of **subject pronouns** that perform actions and **object pronouns** that receive them, all while navigating fun scenarios with secret agents, wizards, and aliens.
> See a quick refresher inside!


Subject and Object Pronouns

Test your **Basics: Question Tags** skills with 12 questions at **medium** level.


Question Tags: Rules and Special Cases

Test your **Basics: Question Words with Prepositions** skills with 12 questions at **medium** level.


Question Words with Prepositions

Test your **Basics: Questions - Yes/No and Wh- Questions** skills with 12 questions at **easy** level.


Basics of Yes/No and Wh- Questions

Test your **Basics: Reflexive Pronouns** skills with 12 questions at **medium** level.


Reflexive Pronouns: Yourselves, Themselves, and Intensive Uses

Test your **Basics: Short Answers and Agreement** skills with 12 questions at **easy** level.


Basic Short Answers and Agreement

Test your **Basics: Should - Advice** skills with 12 questions at **medium** level.


Giving Advice with Should

Test your **Basics: Singular and Plural Nouns** skills with 12 questions at **easy** level.


Basics of Singular and Plural Nouns

Test your **Basics: Some and Any** skills with 12 questions at **easy** level.


Some vs. Any: The Basics

Test your **Basics: Subject vs. Object Questions** skills with 12 questions at **medium** level.


Subject vs. Object Questions

Test your **Basics: This/That/These/Those** skills with 11 questions at **easy** level.


Demonstratives: This, That, These, and Those

Test your **Basics: Used To - Past Habits and States** skills with 15 questions at **easy** level.


Basics: Used To - Past Habits and States

Test your **Basics: Will vs. Going To** skills with 12 questions at **easy** level.


Basics: Will vs. Going To for the Future

Do you know exactly when to use *will* instead of *going to*? Master the basics of the future tense by practicing how to express **spontaneous decisions**, **promises**, and **offers of help**.
> See a quick refresher inside!


Basics: Will for Decisions, Promises, and Offers

Test your **Basics: Would Like and Would Rather** skills with 10 questions at **medium** level.


Would Like vs. Would Rather

Verb forms show tense, voice, mood, or other grammatical features, with regular and irregular verbs. Regular verbs follow a pattern by adding **-ed** for past simple and past participle forms. Irregular verbs have unique forms, including essential auxiliary verbs "be," "have," and "do." Examples of common irregular verbs are "go," "write," "sing," and "swim."

> See a quick verb forms refresher inside!



Basics. Verb Forms: Be/Have/Do and Regular/Irregular Verbs.

The challenge is about **common questions in English**: simple present and past questions, "why + negative" questions, questions with "who" as the subject, and questions with "who" and "whom" as the object.

> See a quick theory refresher inside!



Basics. Common Questions.

Test your understanding of **conditionals** and the use of **wish** for expressing unreal or desired situations. Practice identifying the correct forms and meanings in context.
> See a quick refresher inside!


Basics. Conditionals And "wish".

The challenge covers the basics of **adjectives and adverbs**, including their usage, **comparative** and **superlative** forms, and the use of "enough" and "too" to indicate sufficiency and excess.

> See a quick **adjectives and adverbs** refresher inside!


Basics. Adjectives and Adverbs.

This challenge covers **common uses of auxiliary verbs**, including forming negative sentences, expressing interest or surprise, creating tag questions, and using "too," "either," "so," and "neither" in sentences.

> See a quick **common uses of auxiliary verbs** refresher inside!


Basics. Common Uses of Auxiliary Verbs.

**Conjunctions** are key elements in English, connecting words, phrases, and sentences. Common conjunctions include "and," "but," and "or." They join language blocks like words, phrases, and sentences, and help create compound and complex sentences.

> See a quick **conjunctions** refresher inside!


Basics. Conjunctions.

The introduction covers various **determiners and pronouns**, including **this/that/these/those**, **every** and **all**, **all/most/some/any/no/none**, and **(a) little**/**(a) few**. These words help specify items, people, or quantities in sentences.

> See a quick **determiners and pronouns** refresher inside!


Basics. Determiners and Pronouns.

The **Future Simple**, **Future Continuous**, and **Future Perfect** tenses express actions or events in the future. Future simple describes an action's occurrence, future continuous highlights its ongoing nature, and future perfect emphasizes its completion by a specific time. These tenses are formed using different auxiliary verbs: "will/shall" for future simple, "will be/shall be" for future continuous, and "will have/shall have" for future perfect. Negative sentences and questions involve placing "not" after the auxiliary or inverting the auxiliary and subject, respectively.

> See a quick **Future Simple**, **Future Continuous**, and **Future Perfect** usage rules refresher inside!


Basics. Future Simple, Continuous and Perfect Tenses.

This challenge covers unique uses of the verbs "**go**," "**get**," "**do**," "**make**," and "**have**" in English grammar. Each verb is utilized in various phrases and contexts to convey different meanings, such as describing activities, indicating changes in state, or expressing possession. Understanding these special uses is crucial for mastering English grammar and communication.

> See a quick refresher of **go**, **get**, **do**, **make**, and **have** inside!


Basics. Some Uses of Go, Get, Do & Make, and Have.

The **Past Simple** tense describes completed actions in the past, using regular (-ed) or irregular verb forms. The **Past Continuous** tense expresses ongoing actions in the past, using "was/were" and the -ing form of the main verb. Negative sentences use "didn't" or "not" with the verb, while questions involve inverting the subject and auxiliary verb.

> See a quick **Past Simple** and **Past Continuous** usage rules refresher inside!


Basics. Past Simple and Past Continuous/Progressive Tenses.

**Phrasal verbs** are combinations of a verb with a preposition or an adverb, creating new meanings. The position of the preposition or adverb can vary in a sentence. They can be categorized into two groups: those without an object, like "ran away" or "got up," and those with an object, such as "put on" or "turned off." Understanding phrasal verbs is crucial for effective communication in English.

> See a quick **phrasal verbs** refresher inside!


Basics. Phrasal Verbs.

**Prepositions** are vital components of the English language that establish relationships between words in a sentence, providing context about time, place, direction, and other connections. Mastering prepositions is crucial as they help convey clear and accurate information.

> See a quick **prepositions** refresher inside!


Basics. Prepositions.

This topic covers various aspects of **pronouns and possessives** in English. It includes personal pronouns for people and things, possessive forms to show ownership or relationships, forming questions with possessives, and reflexive pronouns.

> See a quick **pronouns and possessives** refresher inside!


Basics. Pronouns and Possessives.

**Reported speech**, or **indirect speech**, is used to convey what someone else said without directly quoting their exact words. It often involves changing tenses, pronouns, and contextual details to create a more natural and conversational narrative. Mastering reported speech requires understanding the main tense changes and practicing with various examples to ensure the original meaning is accurately conveyed.

> See a quick **reported speech** usage refresher inside!


Basics. Reported Speech.

Learn how to use "**there is/are**" and "**it**" in everyday English sentences to talk about the presence of objects, events, and quantities. Get to know how to create questions and negative sentences, and see examples using different verb tenses. Also, discover common ways to use "it" when discussing time, distance, and weather.

> See a quick **There is/are and It** usage refresher inside!


Basics. Using there is/are and it in impersonal sentences.

In English, the verb **to be** is conjugated differently based on the subject of the sentence. This grammar quiz focuses on the conjugation of the verb "to be" with different subject pronouns and nouns, both singular and plural, in affirmative, negative and interrogative sentences. Participants will need to use the correct form of the verb "to be" based on the subject in each sentence to demonstrate their understanding of this grammar concept.

> See a quick **to be** usage rules refresher inside!


Basics. "To be" in Present Tense.

This challenge covers basic rules for **word order**, including the placement of adjectives and adverbs. It also explains how adverbs like "still," "yet," and "already" can affect word order.

> See a **word order** introduction inside!


Basics. Word Order.

Master **more complex common question types**, such as "Who...? / What...? / Where...? / Which...?" with prepositions at the end, "What + noun" and "Which + noun" questions, questions about duration, and complex sentence questions.

> See a quick refresher inside!


Basics. Common More Complex Questions.

Any idea what **Present Perfect** is? The **Present Perfect** tense describes actions with a connection to the present, formed using "have" or "has" and the past participle of the main verb. It differs from **Past Simple** and **Present Simple** tenses. To identify Present Perfect, look for "have" or "has" followed by a past participle. Negative sentences add "not" after the auxiliary verb, and questions invert the subject and auxiliary verb.

> See a quick **Present Perfect** usage refresher inside!


Basics. Present Perfect.

Test your understanding of **advanced conditionals** and the use of **wish** for expressing unreal, hypothetical, or regretted situations. Challenge your skills with mixed conditionals and nuanced wish structures.
> See a quick refresher inside!


Basics. Advanced Conditionals And "wish".

The **Passive Voice** emphasizes the action or receiver, using the verb to be and the past participle of the main verb. It can be formed in different tenses, including continuous and perfect. Negative sentences add not after the verb to be, while questions invert the subject and the verb to be.

> See a quick **Passive Voice** usage refresher inside!


Basics. Passive Voice.

**Modal verbs** are auxiliary verbs that convey necessity, possibility, permission, or ability. They include "might," "may," "can," "could," "must," "should," and "have to." Modals have various uses, such as expressing possibility, knowing how to do something, asking for help, or indicating necessity. To negate a sentence with a modal verb, simply add "not" after the modal verb.

> See a quick **Modal verbs** usage rules refresher inside!


Basics. Modal verbs to convey necessity, possibility, permission, or ability.

**Modals and imperatives can express preferences, requests, and suggestions**. "Would you like...?" can replace "Do you want?" or invite someone. "I'd like..." is a polite way to say "I want." "I'd rather..." expresses preferences. Positive **imperatives** give orders, make polite requests, or offer encouragement. Negative imperatives forbid actions or emphasize points. "Let's..." is used for asking people to do things or suggesting not to do something.

> See a quick **modals and imperatives to express preferences, requests, and suggestions** refresher inside!


Basics. Modal verbs for expressing preferences, requests, and imperatives in speech.

**Collocations** are natural-sounding word combinations used frequently by native speakers, such as "good morning," "cold weather," and "fast food." Understanding collocations helps language learners sound more fluent in speaking and writing. They're common in everyday expressions like "happy birthday" and describing places, such as "city center" and "living room."

> See a quick **basic collocations** refresher inside!


Collocations (Basic, A1 and A2).

Are you "making" your homework or "doing" your homework? Master the difference between these tricky verbs with everyday school vocabulary, including **doing assignments**, **making mistakes**, **making progress**, and **doing an exam**.
> See a quick refresher inside!


Do vs. Make: School and Studying Collocations

This challenge focuses on Intermediate English level collocations. **Collocations** are natural-sounding word combinations, such as "lost and found," "rush hour," and "private property." Understanding collocations helps language learners sound more fluent in speaking and writing.

> See a quick **Intermediate collocations** refresher inside!


Collocations (Intermediate, B1).

**Collocations** are word pairs frequently used together, forming natural-sounding expressions. They enhance fluency, making language learners sound more authentic. Examples for upper-intermediate learners include "big deal," signifying something important, "last-minute," denoting actions just before a deadline, and "professional attitude," referring to appropriate workplace behavior. Learning these collocations improves communication precision and fluency.

> We provide an explainer for **Upper Intermediate collocations** inside!


Collocations (Upper Intermediate, B2), Part 1.

Do you **tell someone** news or **say** news to them? Master essential communication collocations including **say vs. tell distinctions**, **advice patterns**, **promise expressions**, and **argument vocabulary** through 23 interactive questions.
> See a quick refresher inside!


Say vs. Tell, Advice, and Promises: Communication Collocations

Very often when we compare different objects or events. As we tend to be as colorful as possible, using only comparative or superlative form of adjectives is not always enough.

Because of this, we begin to add adverbs or special constructions such as far, by far, much, a lot, a little etc.

The knowledge of the rules how to use the intensifiers of comparison usually indicates an advanced student.


Comparatives and Superlatives

There are five types of subordinate clauses in English: the subject, the predicative, the attributive, the object and several types of adverbial clauses.

Adverbials happen to be the thing this challenge is about.


Complex Sentence: Adverbials

There are five types of subordinate clauses in English: the subject, the predicative, the attributive, the object and several types of adverbial clauses.

In English grammar, all the clauses are subdivided into three main groups: noun clauses, adjective clauses and adverb clauses.

The Noun clauses include three types of subordinate sentences such as the subject clause, the predicative clause and the object clause. Usually in subordinate clauses we use the direct word order but in some cases we may face a particular version of inversion. Also, different subordinate clauses need to be introduced by different introductory words which cannot be omitted.

Try the challenge to figure out what all this is about!


Complex Sentence

Subjunctive mood is represented by three main forms in contemporary English: present subjunctive, past subjunctive, past perfect subjunctive. Other forms such as present continuous subjunctive and past continuous subjunctive are used very rarely.

These subordinate clauses may be divided into 4 types according to the realness of the condition and the time.

Apart from the aforementioned, advanced students are particularly interested in the accurate usage of such verbs as _should_, _would_, _could_, _might_, _wish_ after _if_ and in the case when it is omitted in the mixed type conditionals.

All this is simple and clear for you, and you would easily prove it passing a test on the subject, wouldn't you?


Conditional Subjunctive

Would you know what to say if you won the lottery, or how to express regret over a hilariously botched bank robbery? Master the rules for the **zero**, **first**, **second**, and **third conditionals** across 13 engaging hypothetical scenarios.
> See a quick refresher inside!
