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1、专项练习——句型转换英语的句子类型陈述句肯定句否定句疑问句一般疑问句特殊疑问句一.肯定句变否定句1)Iamastudent.Iamnotastudent.2)Theyareblue.Theyaren’tblue.3)HeisKangkang.Heisn’tKangkang.句子中如有be(am,is,are)，在be后加not注意缩略形式：isn’t,aren’t如果句子中没有be(am,is,are),只有行为动词原形，在动词前加don’t1)Ihaveabook.Idon’thaveabook.2)TheylikeChinese.Theydon’tlikeChinese.3)We
2、comefromChina.Wedon’tcomefromChina.如果行为动词是第三人称单数， 在动词前加doesn’t，行为动词恢复原形1)Shehasasmallmouth.Shedoesn’thaveasmallmouth.2)MarialikesChina.Mariadoesn’tlikeChina.3)JanecomesfromtheU.S.A.Janedoesn’tcomefromtheU.S.A.练习：将下列句子变成否定句1.Iamateacher.Iateacher.2.Wearestudents.Westudents.3.Janeisagirl.Janeagir
3、l.4.TheylikeEnglish.TheylikeEnglish.5.IcomefromChina.IcomefromChina.6.HelikesChinese.HelikeChinese.7.MariacomesfromCuba.MariacomefromCuba.8.WeknowMaria.WeknowMaria.amnotaren’tisn’tdon’tdon’tdoesn’tdoesn’tdon’t1)Iamastudent.Areyouastudent?2)Theyareblue.Aretheyblue?3)Heisplayingfootball.Isheplayi
4、ngfootball?句子中如有be动词(am,is,are)，把它们提到句首注意：I变you,we变you；my变your,our变your二、肯定句变为一般疑问句如果主语后面只有动词原形，在句首加Do1)Ihaveabook.Doyouhaveabook?2)TheylikeChinese.DotheylikeChinese?3)WecomefromChina.DoyoucomefromChina?注意：I变you,we变you；my变your,our变your如果主语后面动词是第三人称单数 在句首加Does，后面动词恢复原形1)Shehasasmallmouth.Doesshe
5、haveasmallmouth?2)MarialikesChina.DoesMarialikeChina?3)JanecomesfromtheU.S.A.DoesJanecomefromtheU.S.A?4)SheknowsMaria.DoessheknowMaria?练习:将下列句子变成一般疑问句1.Iamateacher.ateacher?2.Theyarestudents.Students?3.Janeisagirl.agirl?4.TheylikeEnglish.theylikeEnglish?5.IcomefromChina.youcomefromChina?6.Helik
6、essports.hesports?7.MilliecomesfromtheUSA.MilliefromtheUSA?8.WespeakChinese.youChinese?AreyouAretheyIsJaneDoDoDoeslikeDoescomeDospeak三.一般疑问句的肯定和否定回答AreyouDaniel?肯定回答：Yes,主+be/助动词.否定回答:No,主+be/助动词+not.肯定回答：Yes,Iam.否定回答：No,I’mnot.注意：问句和答语的助动词一定要保持一致1)Areyouastudent?Yes,Iam.No,I’mnot.2)IsheKangkan
7、g?Yes,heis.No,heisn’t.3)DotheylikeChinese?Yes,theydo.No,theydon’t.4)Doesshehaveasmallmouth?Yes,shedoes.No,shedoesn’t.注意：问句和答语中的主语在保持一致的前提下可以使用对应代词1)IsJanefromtheU.S.A?2)DoesKangkangcomefromChina?Yes,sheis.No,sheisn’t.Yes,hedoes.No
