初中英语被动语态讲解及练习ppt.ppt

Passive Voice被动语态 情态动词的被动语态 情态动词+ be + done must be done/mustn’t be done should be done/ shouldn’t be done can be done/ can’t be done may be done/ might be done 在改写中应注意： 1.把原来的宾语提到前面作被动语态的主语; 2.把动词变成“be + 过去分词”; 3.主动语态中的主语变为介词by的宾语。 We should look after the old people . The old people should be looked after by us. 注意3： 主语+连系动词+表语 的句子没有被动语态。 The food tastes delicious. 注意4：there be 结构没有被动语态 ( ) 1.The monkey was seen _____ off the tree. A. jump B. jumps C. jumped D. to jump ( ) 2. If small trees ______, they will grow up quickly. A. take good care of B. take good care C. are taken good care of D. are taken good care * * 英语动词有两种语态：主动语态和被动语态。 1.当我们不知道谁是动作的执行者, 2. 或者只需强调动作的承受者时，要用被动语态。 被动语态结构： be + 过去分词(PP) + (by …) 表格：被动态基本结构 现在完成时 am/is/are being done 现在进行时 一般将来时 一般过去时 一般现在时 被动语态结构 时态 am/is/are done was/were done (shall/will/be going to) be done have/has been done 各种时态的被动语态构成 1）一般现在时：You are invited to do this. 2）一般过去时：The story was told by her. 3）一般将来时：The problem will be discussed tomorrow. 4)情态动词：The rubbish can be put into the dustbin over there. Many people speak Chinese. Chinese is spoken by many people. He plants trees in spring. 主 谓 宾(受动者) Trees are planted by him 改为被动语态 in spring. Tom will clean the room tomorrow. 主 谓 宾(受动者) The room will be cleaned by Tom tomorrow. His brother washes bowls every day. 主 谓 宾(受动者) Bowls are washed by his brother every day. 1.People use knives for cutting things. Knives ______ ______ for cutting things. 2.The students clean the windows of their classroom twice a month. The windows of their classroom______ _______ twice a month. are used are cleaned (变被动语态） 3.I found the ticket on the floor. ______ ______ ______ ______ on the floor. 4.I told her to return the book in time. She ______ _______ to return the book in time. The ticket was found was told 5. His doctor made him have only two meals a day. He ______ _______ _______ _______ o