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        1. I told Sally how to get here, but perhaps I ___ for her.

          A.had to write it out B.must have written it out
          C.should have written it out D.ought to write it out

          C

          解析試題分析:考查情態(tài)動詞+have done的用法:句意是:“我告訴過Sally 怎么去這里,但是也許我應(yīng)該給她寫出來”,可知說話人現(xiàn)在覺得自己當(dāng)時(shí)應(yīng)該把地址寫給sally,而事實(shí)上沒有,should have done就表示“本應(yīng)該作某事而沒有做”,是一種虛擬語氣的表達(dá),符合題意,其它項(xiàng):A 表示“不得不”,B表示“一定寫過了”。D不表示過去的狀態(tài)(表示現(xiàn)在或?qū)響?yīng)該寫出來,選C。
          考點(diǎn):考查情態(tài)動詞+have done的用法
          點(diǎn)評:情態(tài)動詞+have done可以表示推測和虛擬:“must+have+done”表示對過去事情的肯定推測,譯成“一定做過某事”,該結(jié)構(gòu)只用于肯定句!癱an't+have+done”表示對過去事情的否定推測,譯成“不可能做過某事”。 “may+have+done”表示對發(fā)生過的事情的推測,意思是“可能已經(jīng)”或“也許已經(jīng)”,用于肯定句中。 “could+have+done”是虛擬語氣,表示對過去事情的假設(shè),意思是本來能夠做某事而沒有做。 “would+have+done”虛擬語氣,表示對過去事情的假設(shè),意思是“本來會做”。

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