陈述句变疑问句和否定句.ppt

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1、陈述句变一般疑问句和否定句步骤一、变一般疑问句当句中谓语动词含有系动词（is/am/are/was/were）或者是情态动词（can/may/must/should/would/could/will/shall/need）时，应该先在该系动词或者情态动词直接提到句首，然后在句尾加“？”当句中含有第一人称的代词时，在改为问句后应该改为与此相应的第二人称（系动词的变化）.第一种情况：注意：I--youwe--youmy--yourme--youour--yourus---youmyself---yourself

2、ourselves---yourselves1.WeareallfromtheUSA.youallfromtheUSA2.Iamlisteningtothemusic.youlisteningtothemusic3.Tomisdoinghishomeworkathome.Tomdoinghishomeworkathome4.Thestudentswillgotoseetheanimalsinthezoonextweek.thestudentsgotoseetheanimalsinthezoonextweek

3、5.Weshouldhelpeachotherinthestudy.youhelpeachotherinthestudyAre?Are?Is?Will?Should?第二种情况：如果句中谓语动词既无系动词又无情态动词而是实义动词，则要用助动词do或者它的其他形式does/did，具体是把该助动词提到句首变为Do/Doed/Did.其结构为：Do/Does/Did+主语+V（原形）+其他？1.Hegoestotheschoolonfooteveryday..hegototheschoolonfootevery

4、day2.Theywalktohospitaltoseetheirgoodfriend,Tom.theywalktohospitaltoseetheirgoodfriend,Tom3.TomandJimgetupat6:30a.m.everyday.TomandJimgetupat6:30a.m.everydayDoes?Do?Do?一、变否定句要看句中谓语动词是否有系动词（is/am/are/was/were）或者情态动词(can/may/must/should/would/could/will/shal

5、l/need).以上两种情况只要符合其中之一，就在其系动词或者情态动词后直接加not即可(也可以用其缩略式)。第一种情况：其具体结构为：主语+系动词/情态动词+not/缩略式+V(原形)+其他。注意：如果句中含有并列词and时，变为否定句后要改为or。1.ThetwinsarewatchingTVnow.Thetwinsarenot(aren’t)watchingTVnow.2.Theywereinthefrontoftheclassroom.Theywerenot(weren’t)inthefrontof

6、theclassroom.3.Thechildcanplaythepianoverywell.Thechildcannot(can’t)playthepianoverywell.4.Westudentsshouldhelpeachotherinstudy.Westudentsshouldnot(shouldn’t)helpeachotherinstudy.第二种情况：如果句中谓语动词既无系动词又无情态动词而是实义动词，则要用助动词do或者它的其他形式does/did+not(或者用其缩略式don’t/doe

7、sn’t/didn’t）即可。注意：如果句中含有并列词and时，变为否定句后要改为or。其具体的结构为：主语+do/does/did+not+v原形+其他。1.Wealwaysgotoschoolonfooteveryday.Wealwaysdon’tgotoschoolonfooteveryday.2.Theywenttothehospitaltoseetheirgoodfriend,Tom.Theydidn’tgotothehospitaltoseetheirgoodfriend,Tom.3.Mygoo

8、dfriendhastwoeggsandaglassofmilkinthemorningbeforehegoestoschool.Mygoodfrienddoesn’thavetwoeggsoraglassofmilkinthemorningbeforehedoesn’tgotoschool.