英语语法 被动语态（初中） .ppt

语法专题复习 被动语态被动语态 （the passive voice) teaching aims： 了解被动的语态的相关知识，并能够熟练解决 被动语态的相关问题。 main and difficult points： 熟练运用各种时态的被动语态。 1.英语中有那两种语态？ 回答下列问题： 主动语态和被动语态。 2.主动语态表示什么？ 主动语态表示主语是动作的执行者。 3.被动语态表示什么? 被动语态表示主语是动作的承受者。 例如：many people speak english.(主动语态) english is spoken by many people.(被动语态) 被动语态的构成:“助动词be+及物动词的过去分词 ” 被动语态中be在各时态中的具体形式： 1.一般现在时中,be是am,is ,are的形式。 注:助动词be有人称、数和时态的变化。其变化 规则与be作为连系动词时完全一样。 3.一般将来时中，be是will be 的形式。 例句: i /she/we will be taught to study english 2.一般过去时中，be是was,were的形式。 例句: i /she was taught to study english. we were taught to study english. 例句: i am taught to study english. we are taught to study english. 4.现在完成时中被动语态的构成:have / has been +done 5.现在进行时态中被动语态的构成:be being +done 例句: the work has been finished. why havent they been invented. 例句: new bridge is being built near our school. 6.含有情态动词的被动语态的构成: can/ may /must/should + be + done+（by s b ） 例句：the dictionary must be taken good care of。 can the work be done in two days。 被动语态的用法： 1.不知道动作的发出者,或不必要说明 动作的 发出者。 例句：silk is produced in suzhou and hangzhou。 2.对动作的承受者进行强调时,要用被动 语态。 例句：bicycles are widely used in china. 主动语态转化为被动语态的三部曲: 1.主动结构宾语变为被动结构主语。 2.谓语动词变为被动语态。 3.主动结构主语变为介词by的宾语,组成介 词短语,放在被动结构中谓语动词之后。在 动词执行者无须说明或强调时，by短语可 以省略。 巩固训练 ：1.the key _for locking the classroom door. a.uses b. is used c.is using d.use (广西壮族自治区中考题) 2.a new school _over there in two years. (四川中考题) a.may built b.may be built c. is built 3. he was made _yesterday. (辽宁省中考题) a.cry b.to cry c.crying d.to be cried 4.the prc_on october 1,1949. a.was found b. is found c.was founded d.is founded 5.a talk on chinese history_in the school hall next week. a.is given b.has been given c.will be given d. will give (天津市中考题 ) b b b c c 当堂作业 :句型转换： 1.they play basketball in their school.(改为同意句) basketball_ _in their school by them. 2.whats her name ? can you tell me ? (合为一句) can you tell me _ _ _ _? 3.i saw her run into the old house just now.(改为同意句 ) she was _ _run into the old house just now. 4.we should listen to the teacher carefully.(改为同意句) the teacher should be _ _carefully. 5.dont play football on the r