Mike ________ his car, for he came to work by bus this morning
A.can have foundB.could have found
C.can’t have foundD.mustn’t have found
C

試題分析:考查情態(tài)動(dòng)詞+have done的用法,can’t have done是過(guò)去不可能做了什么,must接have done只能用于肯定句,句意:邁克不可能發(fā)現(xiàn)他的車(chē),因?yàn)榻裉煸缟纤亲龉财?chē)上的班。選C。
點(diǎn)評(píng):情態(tài)動(dòng)詞+have done可以表示推測(cè)和虛擬:“must+have+done”表示對(duì)過(guò)去事情的肯定推測(cè),譯成“一定做過(guò)某事”,該結(jié)構(gòu)只用于肯定句。“can't+have+done”表示對(duì)過(guò)去事情的否定推測(cè),譯成“不可能做過(guò)某事”。“may+have+done”表示對(duì)發(fā)生過(guò)的事情的推測(cè),意思是“可能已經(jīng)”或“也許已經(jīng)”,用于肯定句中!癱ould+have+done”是虛擬語(yǔ)氣,表示對(duì)過(guò)去事情的假設(shè),意思是本來(lái)能夠做某事而沒(méi)有做。 “would+have+done”虛擬語(yǔ)氣,表示對(duì)過(guò)去事情的假設(shè),意思是“本來(lái)會(huì)做”。
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