Every vs. All: Basic Contrast
Do you know when to use every instead of all? While both words talk about total quantities, their grammar rules are quite different. Use every with singular countable nouns to emphasize individual members of a group (e.g., "every door is locked"). Use all with plural or uncountable nouns to talk about the group as a whole (e.g., "all the doors are locked").
In this challenge, you will apply these rules to a variety of fun scenarios. You'll help a survivalist secure their house against zombies, review an alien commander's top-secret report on Earth's cats, and assist a detective with a suspect's interrogation transcript. Along the way, you will practice pairing these quantifiers with singular nouns, plural nouns, and specific determiners like the.
You will work through 10 questions in a mix of single-choice, multi-choice, drop-down, and drag-and-drop formats.
Try the quiz to check your knowledge!
Correct Answers
Help the intergalactic traffic cop complete his incident report by dragging the correct words into the blanks.
The space guide promised that every alien on this planet is friendly.
However, the police noticed that all their spaceships were illegally parked in the meteor lane!
The space guide promised that every alien on this planet is friendly.
We use every with singular countable nouns (like "alien"). "All" and "many" would require the plural form "aliens".
However, the police noticed that all their spaceships were illegally parked in the meteor lane!
We use all before possessive adjectives (like "their") and plural nouns (like "spaceships"). Words like "every" or "much" cannot be followed directly by a possessive pronoun and a plural noun.
Help the survivalist complete their safety checklist. Choose the correct word to fill in the blank.
Make sure to lock ___ door in the house before the zombies arrive!
The correct answer is every.
We use every with singular countable nouns (like "door"). If we wanted to use all, we would need to make the noun plural and add "the" (for example, "lock all the doors").
The correct answers are Every book in this section must be returned by Friday. and All books in this section must be returned by Friday.
Every is followed by a singular countable noun (every book).
All is followed by a plural countable noun (all books) when referring to a group of things.
"Every books" and "All book" mix up these basic rules!
"I can't believe it! Every single croissant in the oven is burned to a crisp! Now, I have to go out there and apologize to all the customers waiting outside."
Use every with singular countable nouns (like croissant).
Use all with plural nouns (like customers), and note that it can be followed by "the". We never say "every the customers."
Complete the university's slightly threatening announcement. Choose the correct word to start the sentence.
___ students must submit their essays by midnight, or the professor will turn into a pumpkin.
The correct answer is All.
We use all with plural nouns (like "students"). Every and each are incorrect here because they must be followed by a singular noun (like "student").
The suspect confidently claimed that every window in the house was locked from the inside. However, the detective quickly pointed out that all the doors were left wide open!
Every is used with singular nouns and singular verbs (every window... was).
All is used with plural nouns and plural verbs (all the doors... were).
Complete the wizard's daily routine diary. Choose the correct word to fill in the blank.
To keep the invisibility spell working, I have to drink a terrible swamp-water potion ___ morning.
The correct answer is every.
We use every with singular time words (like "morning", "day", "year") to talk about how often something happens—meaning it repeats daily. If we said "all morning", it would mean he spent the entire duration of the morning drinking the potion non-stop!
The correct answers are I groan and shuffle through the hallways every night. and Yesterday, I groaned and shuffled through the hallways all night.
Every night means "each night" (Monday, Tuesday, Wednesday, etc.), and "every" must be followed by a singular noun.
All night means "the entire duration of one night" from start to finish.
You cannot say "every nights" (plural) or "all nights" (in this specific context of a single continuous shift).
Help the food critic finish her review of the chaotic baking contest by dragging the correct words into the blanks.
The judge bravely tasted every cake on the table to find the winner.
She was absolutely amazed that all the bakers managed to burn their cookies!
The judge bravely tasted every cake on the table to find the winner.
We use every with singular countable nouns (like "cake"). "All" and "most" would require the plural form "cakes".
She was absolutely amazed that all the bakers managed to burn their cookies!
We use all before determiners (like "the") and plural nouns (like "bakers"). We cannot say "every the bakers".
The correct answers are Every cat demands food at precisely 6:00 AM. and All cats demand food at precisely 6:00 AM.
Every takes a singular noun and a singular verb (Every cat demands).
All takes a plural noun and a plural verb (All cats demand).
The other options incorrectly mix singular and plural nouns or verbs!
Countable and uncountable
Countable vs uncountable: countable nouns can be numbered and pluralised (one book, two books). Uncountable nouns can't (information, not informations). The distinction determines your choice of article, quantifier (much/many, few/little), and whether the noun can be plural.
Countable = takes a/an, has a plural, uses many/few. Uncountable = no a/an, no plural, uses much/little. Some nouns are both depending on meaning (coffee = the substance vs a coffee = a cup).
Diagnostic: can you say one ___, two ___s? Yes → countable. No → uncountable (use a unit phrase: a piece of, a bit of).
Determiner
Determiner vs adjective: both appear before a noun, but determiners specify which/how many while adjectives describe what kind. Determiners come first: the big cat (✅) vs big the cat (❌). You can stack adjectives (big fluffy cat) but generally only one determiner per noun.
A determiner is a function slot before a noun filled by articles, demonstratives, possessives, or quantifiers.
Diagnostic: does the word tell you which one or how many rather than what kind? → determiner. Does it describe a quality? → adjective.
Imperative mood
Imperative vs declarative: declarative states facts (The door is closed.). Imperative gives commands (Close the door.). The difference: imperatives have no stated subject and use the bare verb. Socially, bare imperatives can sound rude — politeness strategies (Could you close the door?) are often preferred.
The imperative mood = bare verb, no subject, for commands/instructions/requests. Negated with don't. Softened with please or modal questions.
Diagnostic: is the subject missing and the verb in base form? → imperative. Is there a stated subject + tense? → declarative or other mood.
Noun
Noun vs verb: the two core word classes. Nouns name things; verbs describe actions/states. Many English words can be both (run, play, cook, work) — only the sentence slot tells you which role it's playing. The run was exhausting (noun) vs I run every day (verb).
A noun names an entity. It interacts with articles, determiners, forms plurals, and controls verb agreement and pronoun choice.
Diagnostic: can you put the/a before it or pluralise it? → noun. Does it describe an action with tense? → verb. Can it do both? → check the sentence context.
Possessive
Noun possessive vs pronoun possessive: nouns ADD an apostrophe for possession (Sarah's, students'). Pronouns NEVER use apostrophes (its, yours, theirs — no apostrophe). This contradiction is why its/it's is the most common error in English writing.
The possessive marks ownership: 's for singular nouns, s' for plural nouns ending in s, and special pronoun forms (my/mine, their/theirs).
Diagnostic: is it a noun? → add 's or s'. Is it a pronoun? → use the built-in possessive form (NO apostrophe). Specifically its (possessive) vs it's (it is).
Present tense
Simple present vs present progressive: simple present = habits, routines, permanent facts (I work here). Present progressive = right now, temporary, changing (I'm working from home today). The most common confusion: using progressive for habits (I'm working here ❌ for permanent job) or simple for right-now (I work now ❌ for current activity).
The present tense has four forms: simple, progressive, perfect, perfect progressive — each relating the action to "now" differently.
Diagnostic: is it a habit/permanent fact? → simple. Happening right now? → progressive. Started in past but still relevant? → perfect. Ongoing duration up to now? → perfect progressive.
Subject
Subject vs object: the subject does or is; the object receives. She (subject) hit him (object). In English, position decides: subject comes before the verb, object after. Unlike inflected languages, English rarely marks subjects with case (exception: pronouns — I vs me).
The subject = who/what the sentence is about. Controls verb agreement. Usually a noun/pronoun before the verb.
Diagnostic: ask "who or what [verb]s?" The answer is the subject. The list of items is wrong — what is wrong? The list. That's your subject.
Simple tense
Simple vs progressive vs perfect: simple = "just the fact" (I work). Progressive = "ongoing right now" (I am working). Perfect = "connected to a reference time" (I have worked). Simple is the default — use it unless you have a reason to add progressive or perfect meaning.
The simple aspect = unmarked form. Habits, facts, completed events, scheduled future. The starting point for all tense learning.
Diagnostic: do you need to signal "ongoing" (progressive) or "relevant to now" (perfect)? No? → simple is correct. Most sentences use simple tense — it's the unmarked default.
A1 | Elementary | Beginners
A1 vs A2: A1 covers isolated survival phrases (Where is…?, I am…, How much?). A2 handles connected sentences about familiar routines and simple past events. If you can manage short fixed phrases but not string together original sentences about your day, you're still A1.
A1 is the entry level of the CEFR: greetings, introductions, numbers, basic present tense, and core function words.
Diagnostic: can you describe yesterday using past tense? No → A1. Yes → you're moving into A2.
Medium
Medium vs Easy: Easy has one obviously correct answer and clearly wrong distractors. Medium has one correct answer but plausible distractors — you need to actually know the rule, not just guess from sound.
The Medium tag filters for A2–B1 challenges with realistic difficulty: one rule per question, plausible alternatives, everyday contexts.
Diagnostic: if you're scoring 90%+ on Easy, move here. If you're below 60% on Medium, go back to Easy for that topic. Target 70–80% accuracy for maximum learning.