She __________ have left school, for her bike is still here.
A.can’tB.wouldn’tC.shouldn’t D.needn’t
A

試題分析:考查情態(tài)動(dòng)詞表示推測。如果是對(duì)過去情況的推測,要使用“情態(tài)動(dòng)詞+have done”的形式;如果是對(duì)現(xiàn)在的情況進(jìn)行推測要使用“情態(tài)動(dòng)詞+動(dòng)詞原形”;句意:她不可能已經(jīng)離開了學(xué)校,因?yàn)樗淖孕熊囘在那里。說明是對(duì)過去發(fā)生的情況的推測。Shouldn’t have done本不應(yīng)該做某事,實(shí)際上卻做了;needn’t have done本不需要做某事實(shí)際上卻做了。故A正確。
點(diǎn)評(píng):情態(tài)動(dòng)詞的用法比較復(fù)雜。突出的是表示推測:如果是對(duì)現(xiàn)在的情況進(jìn)行推測,使用“情態(tài)動(dòng)詞+動(dòng)詞原形”;對(duì)過去的情況進(jìn)行推測,使用“情態(tài)動(dòng)詞+have done”;情態(tài)動(dòng)詞也經(jīng)常用于虛擬語氣,要分具體情況來分析,在條件句中和賓語從句,表語從句中都有體現(xiàn)。
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