外研版中考英语语法复习专题--被动语态教案

课题： 中考语法复习专题 6种时态对应的被动语态教案 教学目标： 1. 掌握重点单词和词组(课前检测) 2. 掌握6种时态对应的被动语态的用法 3. 复习及巩固过去分词 教学重点： 6种时态由主动变被动以及用法 教学难点： 被动语态的几种特殊形式（要注意的问题）和主动表被动的词及意义 教学内容： 一、Warming up 1、复习上次课的单词和词组。 2、提问上次课所学的重点知识（六大时态）。 二、Lead in: A:Show some pictures and ask some questions 1、浇花：What does she do every day? She waters the flowers every day. 主 谓 宾 2、打扫教室：What did they do yesterday? They cleaned the classroom yesterday. 主 谓 宾 三、Presentation 1. 被动语态的构成与用法 英语中有两种语态：主动语态和被动语态。英语的语态是通过动词形式的变化表现出来的。英语的被动语态由“助动词be＋过去分词”构成，其中be有时态、人称和数的变化。 2. 主动语态变被动语态的步骤： (1)把主动语态的宾语变为被动语态的主语。   (2)把谓语变成被动结构(be＋动词的过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。   (3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。 如： 3. A：各种时态的谓语结构总结：be + done(动词的过去分词） 时态 被动语态的构成 主动语态的构成 be done do / does / be 1 一般现在时 am / is / are done do / does / be 2 一般过去时 was / were done did / was / were 3 现在进行时 am / is / are +being done am / is / are + doing 4 过去进行时 was / were +being done was / were + doing 5 现在完成时 have / has been done have / has + done 6 一般将来时 will / shall be done will be + done 请看以下用例： 1、 The classroom is cleaned every day. 2、 Our school was built in 1998. 3、 The sports meeting will be held tomorrow. 4、 The car is being repaired. 5、 The machine was being painted. 6、 The bank has been built. B：动词过去分词构成规则 ：1,2,3,4（与动词过去式构成规则一样） 注意不规则：sing—sang---_________, build---built-----__________, write---- wrote----________, speak----spoke ----___________ 4. 主动语态变被动语态需要注意的几个问题.（其中黑体为重点讲解内容） （1）时态保持一致。 如：I have repaired my computer. →My computer has been repaired.   （2）谓语为动词短语的被动语态不能丢掉动词短语的介词或副词。        如：His best friend often looks after him.   → He is often looked after by his best friend. （3）主动语态中若有双宾语,将其中一个宾语变为被动句的主语,另一个宾语不变。动词make/buy//get用for;动词give//send/lend/take用to)       如：Vivian gave me a book.  (双宾语，人间物直， me为间接宾语，a book 为直接宾语)         → I was given a book by Vivian.        → A book was given to