Hello, and welcome to this grammar quiz on Adjective and Adverb Clauses! In this quiz, you will encounter sentences containing either an adjective clause or an adverb clause.
Your task is to determine which type of clause is present in each sentence. Adjective clauses modify nouns, and adverb clauses modify verbs, adjectives, or other adverbs. Good luck!
Adjective And Adverb Clauses Quiz And Answers
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I hope now, you should have a clearer understanding of adjective and adverb clauses and how they function in sentences.
Adjective clauses provide more information about nouns, while adverb clauses explain the “when,” “why,” “how,” or “under what condition” something happens.
Keep practicing, and soon these clauses will become second nature to you in both writing and speaking!
Adjective clause or adverb clause? Ask what it’s answering
Clauses sound scary because of the names. They shouldn’t. When I was untangling these on my own, I wasted weeks memorising definitions before I realised the trick is just asking what question the clause answers. Do that, and adjective versus adverb clauses sort themselves out.
An adjective clause describes a noun. It answers “which one?” or “what kind?” It usually starts with who, which, or that. “The book that I borrowed is overdue.” Which book? The one I borrowed. The clause is doing a noun’s makeup — describing it.
An adverb clause describes a verb, and it answers “when?”, “why?”, “where?”, or “how?” It starts with words like because, when, although, if, since. “I returned the book because it was overdue.” Why did I return it? Because it was overdue. That’s pointing at the action, not the noun.
The shortcut I actually use
Look at the first word of the clause. “Who,” “which,” “that” leaning on a noun? Almost always an adjective clause. “Because,” “when,” “although,” “if”? Adverb clause, nearly every time. The opening word is a giant signpost, and quizzes love testing exactly this.
One thing the textbooks underplay: adverb clauses can move, adjective clauses usually can’t. “Because it rained, we stayed in” and “We stayed in because it rained” both work — the adverb clause slides to the front or the back. Try that with an adjective clause and the sentence collapses. That mobility test is a quiet, reliable way to tell them apart when the opening word fools you.
The mistake I made constantly: comma confusion. “My brother, who lives in Lund, is visiting” needs commas because the clause is extra information. “The man who fixed my bike is kind” needs none, because the clause tells you which man. If you can lift the clause out and still know exactly who you mean, fence it with commas. If removing it loses the meaning, no commas. I still pause on this one.
Run the quiz above, then test yourself: write one sentence with an adjective clause and one with an adverb clause about the same person. Move the adverb clause to the front. Does it still work? If yes, you’ve got it. Which type feels more natural when you speak — most learners reach for one far more than the other.
Aarav Mehta is the founder of EnglishProGuide. He taught himself English to an IELTS 7.5 without any formal coaching, and now shares the practical grammar lessons, real examples, and study tips that actually worked for him.
