高三英语语法 被动语态复习.ppt

Exercises 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 ______ _______ _______ _______ only two meals a day. 6.Now people can use computers to help them. Now computers _______ ______ ______ to help them. was made to have can be used 7. Did you plant many trees at this time last year? _______ ______ _______ _______ at this time last time? 8.Must we finish our work today? _______ our work______ _______ today? Were many trees planted Must be finished * * * 被动语态复习 一、被动语态的定义： 语态是动词的一种形式，用以表示主语和谓语之间的关系。当主语是谓语动作的执行者，则为主动语态；当主语是谓语动作的承受者，则为被动语态。 被动语态由助动词be+过去分词构成，时态通过be表现出来。 二、各种时态的被动语态构成 1）一般现在时：You are required 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）现在进行时：The question is being discussed in the meeting room. 5）过去进行时：The new road was being made. 6）现在完成时：The novel has been read. 7)情态动词：The rubbish can be put into the dustbin over there. 1.They make shoes in that factory. 三、主动语态变被动语态 Shoes are made (by them) in that factory. 一般现在时的被动语态构成 ： S(主语）+am/is /are +过去分词 2. They bought ten computers last term． Ten computers were bought (by them) last term. 一般过去时：S+was/were +过去分词 3．Ling Feng can take good care of Polly ． Polly can be taken good care of by Ling Feng . 情态动词： S+ can/may/must/should + be+过去分词 4.They will finish the work in ten days. The work will be finished (by them) in ten days. 一般将来时： S+ will+be+过去分词 5. Some workers are painting t