易錯(cuò)點(diǎn)7混淆各種時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)

【易錯(cuò)題】Why does the Lake smell terrible?

-Because large quantities of water ______.

A. have polluted B. is being polluted

C. has been polluted D. have been polluted

【解析】考生容易誤選B項(xiàng)，原因是不知道large quantities of修飾主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞應(yīng)該用復(fù)數(shù)，再就是以為大片的水域正在被污染。根據(jù)前一個(gè)分句可知所填動(dòng)詞表示過(guò)去發(fā)生的動(dòng)作對(duì)現(xiàn)在產(chǎn)生的影響，時(shí)態(tài)用現(xiàn)在完成 時(shí)，動(dòng)詞與主語(yǔ)是動(dòng)賓關(guān)系，故應(yīng)用被動(dòng)語(yǔ)態(tài)。

【答案】D

(6)was/were being done過(guò)去進(jìn)行時(shí)：A meeting was being held when I was there.

(7)shall/will be done一般將來(lái)時(shí)：Hundreds of jobs will be lost if the factory closes.

(8)should/would be done過(guò)去將來(lái)時(shí)：The news would be sent to the soldier’s mother as soon as it arrived.