Question

He _______ the best person you had been expecting for the job, but who else _______?

A．may not be; could be

B．couldn’t be; might be

C．might not have been; could have been

D．mustn’t be; must have been

Answer 1

C

試題分析：句意：他可能不是你過去所期望的勝任這個(gè)工作最好的人，但是還有誰可能是呢？might not have been過去可能沒有做某事，could have been過去能夠做某事，根據(jù)句意，故選C.
點(diǎn)評：本題是高考必考考點(diǎn)，一定要牢記句型意思。must have done過去肯定做了某事。should have done 本應(yīng)該做而實(shí)際未做; can’t have done 過去不可能做了某;shouldn’t have done 本不應(yīng)該做而實(shí)際做了; need have done 本有必要做某事;needn’t have done 本沒有必要做某事,注意沒有 mustn’t have done的形式