被動(dòng)語(yǔ)態(tài)的基本時(shí)態(tài)變化

被動(dòng)語(yǔ)態(tài)通常為十種時(shí)態(tài)的被動(dòng)形式, 被動(dòng)語(yǔ)態(tài)由be+過去分詞構(gòu)成，be隨時(shí)態(tài)的變化而變化。以do為例，各種時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)形式為：

1) am/is/are +done (過去分詞) 一般現(xiàn)在時(shí)

例Visitors are requested not totouch the exhibits.

2) has /have been done 現(xiàn)在完成時(shí)

例All the preparations for thetask have been completed, and we're ready to start.

3) am/is /are being done 現(xiàn)在進(jìn)行時(shí)

例A new cinema is being builthere.

4) was/were done 一般過去時(shí)

例I was given ten minutes todecide whether I should reject the offer.

5) had been done 過去完成時(shí)

例 By the end of last year,another new gymnasium had been completed in Beijing.

6) was/were being done 過去進(jìn)行時(shí)

例A meeting was being held when Iwas there.

7) shall/will be done 一般將來(lái)時(shí)

例Hundreds of jobs will be lostif the factory closes.

8) should/would be done 過去將來(lái)時(shí)

例The news would be sent to thesoldier's mother as soon as it arrived.

9) shall/will have been done 將來(lái)完成時(shí)(少用)

例The project will have beencompleted before July.

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