—How is the debate of your essay?

—It ____ well, but I ____one of the key points.

A．might work; hadn’t forgot                B．needn’t have worked; forgot

C．could have worked; forgot                D．would work; hadn’t forgot

 

【答案】

C

【解析】

試題分析：句意：--你的論文答辯怎樣？--它本來進行地很好，但是我忘了其中的一個重點。needn’t have worked表示過去沒有必要做好，很顯然不符合語境；這里指過去本能進行地很好，所以用could have worked，多于回答者來說答辯已經(jīng)結束，忘記重要的內(nèi)容也是發(fā)生在過去，所以應該用過去式，故選C。

考點：考查情態(tài)動詞的用法。

點評：本題難度適中。情態(tài)動詞是高中階段的重要的語法項目，需要考生掌握它們的不同的語法及區(qū)別，尤其是情態(tài)動詞的完成式表示對過去的推測，不同的情態(tài)動詞推測的可能性大小上不同，需要考生理解它們的不同的語法。

即學即練：—I heard the phone ringing in the office next door.

—You ________ it. They haven’t got a phone yet.

A.couldn’t hear        B.couldn’t have heard

C.didn’t hear           D.wouldn’t have heard

解析：B。由句意可知此處是對過去的事情表示推測，那么否定句用“can/could not+完成時”，故選B。

 

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