14.-Oh dear!Look at the mountains of trash in the street and the terrible haze these days!
-Everyone's effort counts.I ______ fireworks on New Year's Eve!(  )
A.needn't have playedB.mustn't have played
C.shouldn't have playedD.couldn't have played

分析 -哦,親愛的!看看街上的垃圾和這些天可怕的陰霾!
-每個(gè)人的努力都是重要的.我本不應(yīng)該在除夕放煙火的!

解答 答案為C.shouldn't+have+done表示本來不應(yīng)該做某事,而實(shí)際做了.含有指責(zé)對方或自責(zé)的含意.再結(jié)合句意我本不應(yīng)該在除夕放煙火的!可知答案,故選C.

點(diǎn)評 情態(tài)動(dòng)詞+have+done是歷年高考的重點(diǎn)和難點(diǎn)之一,一定要理解結(jié)構(gòu)與用法.
needn't+have+done則表示"本來不需要做某事而做了".I needn't have bought so much wine-only five people came.我本來沒有必要買這么多酒,只來了五個(gè)人.
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.
It must have rained last night,for the ground is wet.昨晚一定下雨了,因?yàn)榈孛孢是濕的.
shouldn't+have+done表示本來不應(yīng)該做某事,而實(shí)際做了.含有指責(zé)對方或自責(zé)的含意.
Look,Tom is crying.I shouldn't have been so harsh on him.看,湯姆哭了,我本來不應(yīng)該對他如此嚴(yán)厲.
could have done 表示"過去本能夠做某事卻未做."
couldn't have done 沒有虛擬語氣的用法,表否定推測,"不可能做過某事"

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