TOEFL Grammar Question

English grammar questions, answered by Alan

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TOEFL Grammar Question

Post by tajansu » Thu Aug 30, 2012 1:46 am

Hi, I am working on paper-based grammar exercises now. While practicing, I came across the following question.

Rare species, unlike endangered species, exist in relatively low numbers but are not necessarily in immediate danger of extinction.
My question is --Why do we use "necessarily" instead of "necessary"?

Thank you so much.

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Re: TOEFL Grammar Question

Post by Alan » Fri Aug 31, 2012 2:23 am

Because an adverb, not an adjective, is required in this sentence position...