She ____ the film. She knows nothing about it.
A.can’tseeB.can’thaveseenC.mustseeD.mustn’thaveseen
B

試題分析:考查情態(tài)動(dòng)詞的完成式:根據(jù)句意:她不可能看過(guò)這個(gè)電影,因?yàn)樗龑?duì)電影一無(wú)所知,可知是對(duì)過(guò)去的事情的推測(cè),用情態(tài)動(dòng)詞的完成式,can’t have done不可能做過(guò)…,must表示推測(cè)的時(shí)候,只能用于肯定句,選B。
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!癱an'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”!癿ay+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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