Do you know the difference between "He spoke thankfully" and "Thankfully, he spoke"? Test your ability to set the tone of a sentence by mastering sentence adverbs, distinguishing them from adverbs of manner, and expressing attitude and certainty.

See a quick refresher inside!

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!

Are you ever tempted to say a movie is as better as the original instead of as good as? Master the art of making comparisons by testing your knowledge of base adjectives, adverbs, and quantifiers within the as...as structure.

See a quick refresher inside!

Is the soup worse or more bad than the appetizer? Master the rules of comparison by practicing short adjectives ending in -er, multi-syllable adjectives with more, and tricky irregular forms across 12 entertaining questions.

See a quick refresher inside!

Do you know when to use more carefully instead of carefuller, or when to say better instead of more well? Test your ability to compare actions by practicing regular adverbs with more/most, tricky irregular adverbs, and flat adverbs like hard and fast.

See a quick refresher inside!

"I'll take the chocolate cupcake, and the strawberry cupcake too." Sounds a bit repetitive, right? Master the art of natural speech by substituting singular and plural countable nouns with one and ones, and learn how to avoid confusing them with pronouns like it or them.

See a quick refresher inside!

Do you know when to use a comma with which, or when that is grammatically forbidden? Master your sentence-building skills by practicing defining and non-defining relative clauses, pronouns for people vs. things, and prepositions before relative pronouns.

See a quick refresher inside!

Is that the baddest meal you've ever eaten, or the worst? Master how to compare extremes by testing your knowledge of spelling rules for short adjectives, multisyllable superlatives, and irregular forms.

See a quick refresher inside!

Why do we visit the United Kingdom but fly to Japan? Master the tricky rules of geographical articles by testing your knowledge of plural countries, cities and continents, and bodies of water across 12 engaging questions.

See a quick refresher inside!

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!

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.

Are you constantly second-guessing whether to use affect or effect? Master these tricky distinctions by practicing countable vs. uncountable determiners, confusing verb pairs like lie/lay, and similar-sounding vocabulary.

See a quick refresher inside!

Have you ever caught yourself saying "I am knowing" instead of "I know," or asking for "an advice"? Polish your everyday English by testing yourself on stative verbs, tricky subject-verb agreement, uncountable nouns, and past tense rules.

See a quick refresher inside!

Do you know why we say "I would rather you didn't" when talking about the present? Master the tricky grammar behind expressing strong warnings and preferences by practicing negative "had better" statements, parallel structures, and past subjunctive forms across 15 questions.

See a quick refresher inside!

Are you making the same embarrassing grammar mistakes that native English speakers make every day? Master the rules behind the most commonly confused word pairs by practicing its vs. it's, fewer vs. less, and affect vs. effect.

See a quick refresher inside!

Is it I'd rather stay or I'd rather staying? And why does I'd rather you drove use the past tense for a present wish? Test yourself on would rather + base verb, prefer + gerund vs. infinitive, and would rather + someone else + past tense across 13 questions.

See a quick refresher inside!

Are you bored, or is the situation boring? Master the difference between -ed adjectives for feelings and -ing adjectives for causes in contexts like awkward dates, spooky hotels, and tedious jobs.

See a quick refresher inside!

Do you know why we say "in my opinion" but never "according to me"? Master the tricky grammar behind expressing preferences, verbs of dislike with gerunds, and natural opinion phrases.

See a quick refresher inside!

This English grammar quiz is designed to check if an English learner is at B1/Intermediate CEFR level.

It covers a range of grammar and vocabulary concepts that are typically associated with Intermediate learners. These concepts include more advanced verb tenses such as present perfect and past continuous, complex sentence structures such as adverbial clauses and modal verbs, and a wide range of vocabulary related to various topics such as hobbies, and opinions. The quiz also tests the learner's ability to understand idiomatic expressions and phrasal verbs.

After taking the quiz, learners would be able to see where they stand in terms of their English proficiency and if they are ready to move to the next level. Passing the challenge indicates the control of English grammar enough to move to the next level.