In some cities, something _______ to stop the sale of live poultry（活禽）during the past weeks.

A．will do            B．have done         C．has been done     D．will be done

 

【答案】

C

【解析】

試題分析：句意：在一些城市，在過(guò)去的一周中已經(jīng)采取了一些措施在阻止活禽銷售了。結(jié)合語(yǔ)境可知本句描述的是現(xiàn)在已經(jīng)完成的動(dòng)作，主語(yǔ)是動(dòng)作對(duì)象，故用被動(dòng)語(yǔ)態(tài)，選C。

考點(diǎn)：時(shí)態(tài)及語(yǔ)態(tài)

點(diǎn)評(píng)：英語(yǔ)中的時(shí)態(tài)主要是借助于時(shí)間狀語(yǔ)與上下文語(yǔ)境來(lái)進(jìn)行判斷。解答此類題型，首先要注意句子中的時(shí)間狀語(yǔ)，如果沒(méi)有則要通過(guò)分析上下文，結(jié)合語(yǔ)境來(lái)判斷句子的時(shí)態(tài)。語(yǔ)態(tài)的判斷主要是確定句子主語(yǔ)與謂語(yǔ)動(dòng)詞的關(guān)系。如果是主動(dòng)關(guān)系則用主動(dòng)語(yǔ)態(tài)，反之如果是動(dòng)賓關(guān)系，則用被動(dòng)語(yǔ)態(tài)，尤其要注意一些特殊動(dòng)詞的用法。

 

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