中考英语-被动语态的用法及练习(共22张PPT).ppt

一、被动语态的概念： 当谓语表示一个动作时，主语和它可以有两种不同的关系，主动关系和被动关系： 表示主动关系时，主语是动作的执行者，称为主动语态 Tom opened the door. 表示被动关系时，主语是动作的承受者，谓语要用另一种形式，称为被动语态 The door was opened by Tom. 在被动结构中，动作执行者可以由介词by引起的短语表示 二、形式 被动语态由助动词be加过去分词构成，时态通过be表现出来：（完成进行时和将来进行时无被动语态） 1一般现在时：History is made by people. 2一般过去时：When was the building completed? 3一般将来时：We won’t be invited. 4现在/过去进行时：A new railway is being built. The roads were being widened. 5现在/过去完成时：The book has been translated. Costs had been greatly reduced. 表格：被动态基本结构 时态 被动语态结构 一般现在时 一般过去时 现在进行时 过去进行时 一般将来时 过去将来时 现在完成时 过去完成时 am/is/are done was/were done am/is/are being done was/were being done shall/will be done would be done have/has been done had been done 一般 进行 完成 完成 进行 现在 write writes am is writing are have\has written have\has been written 过去 wrote was\were writing had written had been written 将来 will\shall write will\shall be writing will\shall have written will\shall have been writing 过去 将来 would\ should write would\ should be writing would\should have written would\should have been writing 以write为例,在16种时态中形式 一般 进行 完成 现在 am\is\are written am\is\are being written have\has been written 过去 was\were written was\were being written have\has been written 将来 will\shall be written ------------------- will\shall have been written 过去 将来 would\ should be written ------------------- would\should have been written 以write为例，在时态中被动语态的形式 1．常用时态（9种）的被动语态结构：以do 为例 1) 一般现在时 am \is \ are +done In some parts of the world, tea _____ with milk and sugar. A. is serving B. is served C. serves D. served I need one more stamp before my collection _____. A. hacompleted B. completes C. has been completed D. is completed The number of deaths from heart disease will be reduced greatly if people ______ to eat more fruit and vegetables.