2020年中考英語知識點之被動語態的構成形式

　　中考網整理了關于2020年中考英語知識點之被動語態的構成形式，希望對同學們有所幫助，僅供參考。

　　被動語態的構成形式

　　1. 被動語態的基本時態變化

　　被動語態通常為十種時態的被動形式, 被動語態由be 過去分詞構成，be隨時態的變化而變化。以do為例，各種時態的被動語態形式為：

　　1) am/is/are done (過去分詞) 一般現在時

　　例Visitors are requested not to touch the exhibits.

　　2) has /have been done 現在完成時

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

　　3) am/is /are being done 現在進行時

　　例A new cinema is being built here.

　　4) was/were done 一般過去時

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

　　5) had been done 過去完成時

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

　　6) was/were being done 過去進行時

　　例A meeting was being held when I was there.

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