English as a Second Language/Adverbial Clauses



Does the dependent clause beginning with "who" in the following sentence function as an adverbial clause?

I'm not sure who turned off the oven.

Usually such a clause functions as a noun as in: I know who turned off the oven, or as an adjective clause, I know the person who turned off the oven.

I thank you for your reply.

Hi Kenneth,

adverbial clauses answer to one of the following adverb questions: when? how? or why?
That is not the case with the sentence you're asking about:

I'm not sure who turned off the oven.

I'd say this is a relative clause. See more about subordinate clauses here:


I hope this helps.


English as a Second Language

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Amy Baker


I can answer question about grammar, spelling, syntax, idioms, reading and/or writing that pertain to English as a Second Language. I am knowledgeable about both TOEFL and IELTS.


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