When was it invented?教案课称名称Unit6 When was it invented?教学目标学生能够掌握一般过去时的被动语态教学本单元的一些短语及固定句式；一般过去时被动语态的构成及结构教学难点熟练掌握一般过去时的被动语态教学过程 【语法】 一般过去时的被动语态1 一般过去时的被动语态（1）一般过去时的被动语态的构成：was/were+及物动词的过去分词如：The desk was made by my father.句式变化：肯定句：主语+was/were+及物动词的过去分词+其他。否定句：主语+wasn，t/weren，t+及物动词的过去分词一般疑问句：Was/Were+主语+及物动词的过去分词+其他？回答：Yes, 主语+was/were No, 主语+wasn，t/weren，t2 各种时态的被动语态形式归纳（以动词give为例）：一般时态进行时态完成时态现在am/is/are+givenam/is/are being givenhas/have been given过去was/were+givenwas/were+being+givenhad been given将来Shall/will be given含有情态动词can/must/....be given3 被动语态主要在下面几种情况中使用：不知道或没有必要说明动作的执行者是谁时。如：These books are written for children.强调动作的承受者（这时可由by引起的短语）如：The book was written by Mo Yan.由礼貌等面的考虑不愿意说出动作的执行者是谁如：He was asked to give give a talk about how to learn English well.4 被动语态的注意事项“主语+连系动词+表语”的句子没有被动语态。There be 结构没有被动语态主动句中宾语是反身代词的没有被动语态。句子是主谓结构时，没有被动语态。也就是说，不及物动词没有被动语态。有些带有介词的短语动词，如果变被动语态，不能把动词后的介词去掉。He looks after his younger sister.-----His younger sister is looked after by him.在主动语态中，在make, hear, see, watch, notice 等词后跟不带to的动 |
