—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(jìn)行地很好，但是我忘了其中的一個(gè)重點(diǎn)。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(jìn)行地很好，所以用could have worked，多于回答者來說答辯已經(jīng)結(jié)束，忘記重要的內(nèi)容也是發(fā)生在過去，所以應(yīng)該用過去式，故選C。

考點(diǎn)：考查情態(tài)動(dòng)詞的用法。

點(diǎn)評(píng)：本題難度適中。情態(tài)動(dòng)詞是高中階段的重要的語法項(xiàng)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(dòng)詞的完成式表示對(duì)過去的推測，不同的情態(tài)動(dòng)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(xué)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(duì)過去的事情表示推測，那么否定句用“can/could not+完成時(shí)”，故選B。

 

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