现在进行时被动语态.ppt

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1、被动语态,Passive voice,小竞赛,英语中有几种语态你知道吗？,两种,是哪两种？,主动语态和被动语态,被动语态（The Passive Voice)：英语中动词有主动语态和被动语态两种语态。主动语态表示主语是动作的执行者;被动语态表示主语是动作的承受者。结构为:be(am,is,are,was,were)+done,What are they doing?,What is she doing?,现在进行时概念：表示现在正在进行或发生的动作,也可以表示现阶段正在进行的动作。结构由be(is/am/are)+v-ing构成的。,.V-ing 变化规则：1）一般加 ing.如:play-p

2、laying,watch-watching以不发音的e 结尾,去e 加ing.如:take-taking,make-making,come-coming3)以重读闭音节结尾的动词，如果末尾只有一个辅音字母，则双写这个辅音字母再加ing 如:cut-cutting,swim-swimming,2.否定句：直接在am/is/are后加not.如：I am writing.I am not writing.,现在进行时的句式,1.肯定句:主语+am/is/are+v-ing+其它.如:I am reading a book.,3.一般疑问句及回答:问句,直接把am/is/are提句首,若原句有第一人

3、称，把第一人称变成第二人称。肯定回答:Yes,主语+be（be)是要变化的，即am/is/are 否定回答:No,主语+be+notYou are drawing a pig.(变一般疑问句，再变肯定回答，否定回答）-Are you drawing a pig?-Yes,I am./No,Im not.,现在进行时的被动语态,主+be(am/is/are)+being+done意义：正在被做。,主动语态:主语+be（am/is/are）+v-ing+其他被动语态的总结构：be(am/is/are/was/were）+done(动词过去分词),现在进行时被动语态结构：,Summary:现在进行时

4、的被动语态,e.g.1.A new library is being built now.2.Some animals are not being protected well enough.,1.构成：,am/is/are+being+V-过去分词,2.意义：,正在被做.,一座新图书馆正在被修建。,有些动物没有受到很好的保护。,is being built,are not being,protected,1）它的否定形式是把not放在第一个be动词之后,即主语+am/is/are+not+being+V-过去分词。2）疑问形式是把第一个be动词放到句首，句末改为问号，即Am/Is/Are主语

5、beingv-过去分词？,构成：,主语+am/is/are+being+V-过去分词,现在进行时的被动语态,eg.Is the bridge being repaired now?,现在那座桥在修吗？,陈述句：The bridge is being repaired now.,否定句：The bridge is not being repaired.,构成：,主语+am/is/are+being+V-过去分词,动词过去分词的构成规则,1、一般在动词原形末尾加-ed，looked,played,2、结尾是e的动词加-d，lived used,3、末尾只有一个辅音字母的重读闭音节词，先双写这个辅音

6、字母，再加-ed，planned,4、结尾是“辅音字母+y”的动词，先变“y”为“i”,再加-ed,study-studied，carry-carried,e.g 1.many people speak English.,主动语态变被动语态的步骤：1、主动语态的宾语变为被动语态的主语；2、主动句的谓语动词变为被动结构；3、主动句的主语变为被动句的宾语，由by引出，不知道谁是谓语动词动作的执行者时，或者没有必要说出谁是执行者时，可不写由by引出的宾语。,2.We speak Chinese in China,Nineparksarebeingbuilt.,1.Theyarebuildingnin

7、eparks.,The classroom is being cleaned now.,2.The students are cleaning the classroom now.,EXERCISES,3.Some eggs are being counted by the boy.,The boy is counting some eggs.,小试牛刀,1.-Have you moved into the new house?-Not yet,the room _.A.are being painted B.are painting C.are painted D.are being painting2.Look!The ship _.A.is unloadingB.is being unloaded C.had unloaded D.is been unloaded,A,B,3.He always _me last term.A.helped B.helps C.helping D.help4.The new plan _ now.A.is discussed B.is discussing C.is being discussed D.is going to discuss,B,C,Thank you!,