Basics. Avoiding Repetition with One and Ones

Medium A1 | Elementary | Beginners A2 | Elementary | Pre-intermediate Adjective Comparative and superlative Countable and uncountable Determiner Noun Pronoun Questions Subject

Avoiding Repetition with One and Ones

In English, we often use the pronouns one and ones to replace countable nouns so we don't have to repeat the same word. For example, instead of saying, "I don't like the red shirt; I want the blue shirt," you can say, "I want the blue one." If the noun is plural, use ones, such as asking for "the fresh ones" instead of "the fresh cookies."

This challenge tests your ability to correctly substitute singular and plural nouns in both everyday and imaginative scenarios. You will help wizards buy shiny new wands, assist customers ordering donuts and cupcakes at a bakery, choose the right clothes to pack for a vacation, and even pick out playful kittens at an animal shelter. Along the way, you will practice avoiding common mistakes, such as using "it" or "them" when a specific substitute is required.

You'll work through 10 questions featuring a mix of single-choice, multi-choice, drop-down, and drag-and-drop formats.

Try the quiz to check your knowledge!

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Adjective

✅ a tall building — ❌ a tally building
✅ The soup is hot — ❌ The soup is hotly
✅ a lovely small old table — ❌ a small lovely old table
✅ She seems tired — ❌ She seems tiredly

These bolded words are adjectives — words that describe nouns or pronouns. They sit before a noun (a tall building) or after a linking verb (The soup is hot).

Pattern: if a word can slot between a/the and a noun (a ___ thing) and can take -er/-est, it's almost certainly an adjective.

Comparative and superlative

✅ She is taller than me. — ❌ She is more taller than me. (double comparative)
✅ This is the most interesting book. — ❌ This is the interestingest book.
✅ He did better than expected. — ❌ He did more good than expected. (irregular)
✅ That's the worst idea ever. — ❌ That's the baddest idea ever.

Comparatives compare two things (-er or more); superlatives pick the extreme of three+ (-est or most). Short adjectives use -er/-est; longer ones use more/most. Never combine both.

Rule: one or two syllables → -er/-est (with exceptions). Three+ syllables → more/most. Irregulars (good/better/best, bad/worse/worst) must be memorised.

Countable and uncountable

✅ some advice — ❌ an advice / advices (uncountable → no article, no plural)
✅ a piece of furniture — ❌ a furniture / furnitures
✅ How much water? — ❌ How many water? (uncountable → much)
✅ fewer people — ❌ less people (countable plural → fewer)

English nouns are either countable (take a/an, form plurals, use many/few) or uncountable (no plural, use much/little). The choice is partly arbitrary and must be memorised.

Test: can you put a number in front? Three chairs → countable. Three furnitures ❌ → uncountable. Use a unit phrase instead: three pieces of furniture.

Determiner

✅ The cat sat on a mat. — articles as determiners
✅ My sister has three dogs. — possessive + numeral as determiners
❌ I went to the home. — wrong (idiomatic: I went home — no determiner)
❌ She is a good student. ✅ vs She is good student. ❌ — missing determiner

A determiner sits before a noun to specify which, how many, or whose. Types include articles, demonstratives, possessives, and quantifiers.

Rule: most singular countable nouns in English require a determiner — a cat, the cat, my cat, this cat. Dropping it (cat sat on mat) breaks the sentence.

Noun

The cat sat on the mat. — concrete nouns (things you can touch)
Happiness is important. — abstract noun (idea/quality)
London is beautiful. — proper noun (specific name, capitalised)
I need some information. — uncountable noun (no a/an, no plural)

A noun names a person, place, thing, idea, or quality. Nouns determine article choice, verb agreement, and pronoun reference. Types: common/proper, concrete/abstract, countable/uncountable.

Test: can you put the or a before it? Can you make it plural? If yes to either → it's functioning as a noun.

Pronoun

✅ between you and me — ❌ between you and I (objective case after preposition)
✅ its colour — ❌ it's colour (it's = it is)
✅ She did it herself. — reflexive pronoun
✅ The person who called… — relative pronoun

Pronouns replace nouns: personal (I/me/my), demonstrative (this/that), relative (who/which/that), interrogative (who?/what?), reflexive (myself), indefinite (everyone/nobody). They carry case that nouns have lost.

Trap: pronouns are where English case still matters: I vs me, who vs whom, its vs it's. Get these wrong and it's instantly noticeable.

Questions

✅ Do you like coffee? — do-support (no existing auxiliary)
✅ Can she swim? — inversion (auxiliary before subject)
✅ Where does he live? — wh-question
✅ You're coming, aren't you? — tag question

Questions require inversion (auxiliary before subject) or do-support (add do/does/did). Types: yes/no (Do you…?), wh- (What/Where/When…?), negative (Don't you…?), tag (…isn't it?).

Rule: find the auxiliary. Move it before the subject. No auxiliary? Add do/does/did. Never use just intonation in written English (You like coffee? is not standard).

Subject

✅ The list of items is wrong. — subject = list (singular), not items
❌ The list of items are wrong. — trapped by nearest noun
✅ Running is good exercise. — gerund as subject
✅ What he said surprised me. — clause as subject

The subject is the noun/pronoun/phrase before the verb that controls its number and person. Finding the true subject — especially through prepositional phrases — is the key to subject-verb agreement.

Rule: strip away prepositional phrases between subject and verb. Whatever's left is the true subject. The list (of items) is wrong.

A1 | Elementary | Beginners

✅ My name is Anna. — present simple of be
✅ Where is the station? — basic *wh-*question
✅ I have two brothers. — possession with have
✅ She likes coffee. — third-person -s

These are A1 sentences — the starting level of the CEFR framework. At A1 you can introduce yourself, ask and answer simple personal questions, and handle basic everyday transactions using present tense, be/have/do, and core vocabulary.

If you can say these but freeze at normal speaking speed, you're solidly A1 — and that's exactly where to start.

A2 | Elementary | Pre-intermediate

✅ I went to the cinema yesterday. — past simple
✅ I have visited Paris twice. — present perfect (life experience)
✅ If it rains, I'll take an umbrella. — first conditional
✅ You should see a doctor. — modal for advice

These patterns are A2 — the second CEFR level. At A2 you move past survival phrases into real grammar: past tenses, the present perfect, basic conditionals, and modals for advice/obligation.

Marker: if you can describe yesterday and give simple advice, but struggle with abstractions or nuance, you're at A2.

Medium

If I were you, I would apologise. — one rule (second conditional), but distractors like was tempt you
Answers require active thought, not instant pattern recognition
Vocabulary and context are realistic, not artificially simplified
Usually tests one rule, but the wrong answers are plausible

Medium marks middle-difficulty challenges: A2–B1, one rule tested, but with realistic distractors that require genuine understanding.

Use "Medium" when Easy feels too obvious but Hard feels overwhelming. This is where most productive learning happens — the sweet spot of difficulty.