英语被动语态PPT.pptVIP

被动语态的复习要点： We called him “glasses”. 表示被动语态的短语和句型： * * * * Passive Voice 语法复习之第十二讲: 被 动 语 态 Disscusion 3: the active voice 主动语态 the passive voice被动语态 如何把主动语态句子变成被动语态句子?哪三个部分 要变？怎么变？ 1. 把原句的宾语改为主语。 2. 把原句的谓语动词改为被动语态结构( be + p.p.)。 3. 把原句的主语改为by+宾语（用宾格）,可省略。 e.g. We study English. English is studied ( by us). 一. 何时使用被动语态 1. 不知道谁是动作的执行者或没有必要知道。 2. 需要强调动作的承受者时 3.为了使语气婉转，避免提及自己或对方而使 用被动语 态，或由于修饰的需要，使用被动 语态，使句子得以更好的安排。 1.被动语态的各种时态的结构； 2.变被动语态注意几点； 3.不用被动语态的情况； 4.用于被动语态的特殊句型。 各种时态的被动语态构成 一般现在时： 一般过去时： 情态动词： 一般将来时： 现在进行时： 现在完成时： 过去进行时： 过去将来时： S+am/is /are +P.P S+was/were +P.P. S+ can/may/must/should + be+ P.P. S+ will/shall+be+ P.P. S+ am/is/are + being + P.P. S+ have/has + been+ P.P. S+ was/were+being+ P.P. S+ would/should+be+ P.P. 二、常见语态转换 （一）一般现在时和一般过去时的被动语态。 1.Lucy bought some fruit. Some fruit _____ ______ _____ Lucy. 2.Uncle Wang waters the flowers every day. The flowers ___ _______ ____ Uncle Wang every day. 3.Did they build the bridge in 1998? ____ the bridge _____ in 1998? 4.When did Lu Xun write these books? When _____these books _______ ____ Lu Xun? 5.The farmers don’t grow apples on the farm. Apples _____ _____ on the farm. 6.They didn’t clean the classroom yesterday. The classroom _______ ________ yesterday. 小结： 1、被动语态的转换，在be+过去分词中，确定_____ 是关键，_______永不变。 2、Be的时态由_______________确定；be的单/复数由____________确定。 3、问句提前__________; 否定________后加not. was bought by are watered by Was built were written by aren’t grown wasn’t cleaned be 形 过去分词 主动时态 被动主语 be动词 be (二）一般现在时带情态动词的被动语态。 1.You can do the work all by yourself. The work _____ _____ _____ all by yourself. 2.We must plant more trees. More trees _____ _____ ________. 3.We should dig a large hole. A large hole _____ ____ _____. 4.Can we put our bikes here? _____ our bikes ____ _____ here? 5.You mustn’t throw rubbish here. Rubbish _____