Compound Adjectives

Compound Adjectives: Numbers, Adverbs, and Hyphens

When we combine two or more words to describe a noun, we often use a hyphen to show they act as a single idea, like an ice-cold drink or a world-famous restaurant. However, knowing exactly when to use that hyphen—and when to leave it out—can be tricky, especially when dealing with numbers and adverbs.

This challenge tests your ability to correctly format and punctuate compound adjectives. You will practice hyphenating number-noun combinations (like a ten-page essay), recognize that -ly adverbs never take hyphens (like a highly respected expert), and learn when to drop the hyphen if the adjectives come after the noun.

You'll 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!

Medium B1 | IntermediateB1 Adjective Adverb Noun Participle Phrase Punctuation Word order

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.

Adverb

✅ She sings beautifully — ❌ She sings beautiful
✅ He drives carefully — ❌ He drives careful
✅ They arrived late — ✅ a late train (same form, both roles)
✅ She works hard — ❌ She works hardly (different meaning!)

The -ly words are adverbs — they modify verbs, adjectives, or other adverbs, telling you how, when, where, or to what degree.

Pattern: most adjectives become adverbs by adding -ly, but watch the exceptions — fast, hard, late, well — that keep the same shape or change meaning entirely.

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.

Participle

✅ a broken window — past participle as adjective
✅ the running water — present participle as adjective
✅ I have eaten. — past participle in perfect tense
✅ She is sleeping. — present participle in progressive tense
❌ I have went. — wrong (past tense, not past participle: use gone)

A participle is a verb form that also works as an adjective. Present (-ing): running, sleeping. Past (-ed or irregular): broken, written, gone. Used in progressive tenses, perfect tenses, passive voice, and as modifiers.

Trap: don't confuse past tense (went) with past participle (gone). After have/has/had → always past participle.

Phrase

the red car — noun phrase (functions as one noun unit)
on the table — prepositional phrase
has been running — verb phrase
very quickly — adverb phrase

A phrase is a group of words that functions as a single unit WITHOUT a subject + verb pair. Types: noun phrase, verb phrase, prepositional phrase, adjective phrase, adverb phrase.

Key distinction: a phrase lacks a subject-verb pair. If it has subject + verb → it's a clause, not a phrase. Phrases are the building blocks clauses are made of.

Punctuation

Period (.) — ends statements
Comma (,) — separates within sentences
Semicolon (;) — links related independent clauses
Colon (:) — introduces what follows
Question mark (?) — ends direct questions
Apostrophe (') — possession + contractions

Punctuation marks signal sentence structure to the reader: where thoughts end, how they connect, what's quoted, and what belongs to whom. ~12 marks, each with specific rules.

Key insight: punctuation isn't about pauses in speech. It's about grammatical structure. Learn the structure, and the punctuation follows.

Word order

✅ She (S) eats (V) cake (O). — standard SVO
❌ Cake eats she. — SOV (not English)
✅ a lovely little old rectangular green French silver whittling knife — adjective order (opinion→size→age→shape→colour→origin→material→purpose)
✅ Never have I seen… — inversion after negative adverb

English word order = SVO (subject-verb-object) as default. Adjectives follow a fixed sequence (opinion→size→age→shape→colour→origin→material). Adverb placement varies by type. Deviations signal questions, emphasis, or literary style.

Rule: when in doubt, default to SVO. English position = meaning. Move a word and you change the grammar or the emphasis.

B1 | Intermediate

✅ If I had more time, I would travel more. — second conditional
✅ The bridge was built in 1920. — passive voice
✅ She said she was tired. — reported speech with backshift
✅ Although it rained, we enjoyed the trip. — complex sentence with concession

These are B1 patterns — the CEFR intermediate level. At B1 you link ideas, use passive voice, handle reported speech, and manage second conditional — enough for travel, work basics, and everyday independence.

Marker: if you can explain why something happened and follow a news story, you're B1.

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.