大家好,小问来为大家解答以上问题。被动语态趣味导入动画，被动语态这个很多人还不知道,现在让我们一起来看看吧！

1、 被动语态的用法： 一般现在时的被动语态构成：is / am / are + 及物动词的过去分词 Our classroom is cleaned everyday. I am asked to study hard. Knives are used for cutting things. 一般过去时的被动语态构成：was / were + 及物动词的过去分词 A new shop was built last year. Dinosaur eggs were laid long long ago. 现在完成时的被动语态构成：has / have + been + 及物动词的过去分词 This book has been translated into many languages. Many man-made satellites have been sent up into space by many countries. 一般将来时的被动语态构成：will+ be + 及物动词的过去分词 A new hospital will be built in our city. Many more trees will be planted next year. 含有情态动词的被动语态构成：情态动词+ be + 及物动词的过去分词 Young trees must be watered often. Your mistakes should be corrected right now. The door may be locked inside. Your homework can be handed in tomorrow. 现在进行时的被动语态构成：am / is / are + being + 及物动词的过去分词 Uncle Wang is mending my bike now.→ My bike is being repaired by Tom now. They are planting trees over there. → Trees are being planted over there by them. 不定式的被动语态：to + be + 及物动词的过去分词 There are two books to be read. → There are twenty more trees to be planted. 怎样把主动语态改成被动语态? 把主动语态改为被动语态非常简单，可以遵循以下几个步骤： 先找出谓语动词； 再找出谓语动词后的宾语； 把宾语用作被动语态中的主语； 注意人称、时态和数的变化。

2、 例： Bruce writes a letter every week. →A letter is written by Bruce every week. Li Lei mended the broken bike this morning.→The broken bike was mended by Li Lei this morning. He has written two novels so far.→Two novels have been written by him so far. They will plant ten trees tomorrow.→Ten trees will be planted by them tomorrow. Lucy is writing a letter now.→A letter is being written by Lucy now. You must lock the door when you leave.→the door must be locked when you leave. 。

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