专项练习专项练习——句型——句型转换转换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1.1)Iamastudent.Iamnotastudent.2)Theyareblue.Theyaren’tblue.3)HeisKangkang.Heisn’tKangkang.句子中有be，在be后加not。2、谓语是动词原形，在动词前加don’t。1)Ihaveabook.Idon’thaveabook.2)TheylikeChinese.Theydon’tlikeChinese.3)WecomefromChina.Wedon’tcomefromChina.33、谓语动词是第三人称单数，在动词前加、谓语动词是第三人称单数，在动词前加doesn’doesn’tt，动词用原形。，动词用原形。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。练习：将下列句子变成否定句。1.Iamateacher.I1.Iamateacher.Iateacher.ateacher.2.Wearestudents.We2.Wearestudents.Westudents.students.3.Janeisagirl.Jane3.Janeisagirl.Janeagirl.agirl.4.TheylikeEnglish.They4.TheylikeEnglish.TheylikeChineselikeChinese5.IcomefromChina.I5.IcomefromChina.IcomefromChina.comefromChina.6.HelikesChinese.He6.HelikesChinese.HelikeChinese.likeChinese.7.MariacomesfromCuba.7.MariacomesfromCuba.MariaMariacomefromCuba.comefromCuba.8.WeknowMaria.We8.WeknowMaria.WeknowMaria.knowMaria.amnotaren’tisn’tisn’tdon’tdon’tdon’tdon’tdoesn’tdoesn’tdoesn’tdoesn’tdon’tdon’t二、肯定句变为一般疑问句变化规则1)含be动词和情态动词的把它们提前。2)没有情态动词/be两项的加do/does。3)句末用“？”，开头单词字母大写。（注；有第一人称的要变第二人称）即：把I变为you,把we变为you,把my变为your,把our变为your;把am变为are。1)Iamastudent.Areyouastudent?2)Theyareblue.Aretheyblue?3)Hecanplaytheguitar.canheplaytheguitar?1、句子中有be/情态动词，把他们提到句首Be:am,isare情态动词：can,may,could,would2.谓语是动词原形，在句首加do。1)Ihaveabook.Doyouhaveabook?2)TheylikeChinese.DotheylikeChinese?3)WecomefromChina.DoyoucomefromChina?3.3.谓语动词是第三人称单数，在句首加谓语动词是第三人称单数，在句首加DoDoeses，动词用原形。，动词用原形。1)Shehasasmallmouth.Doesshehaveasmallmouth?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.HelikesChinese.heChinese?7.MariacomesfromCuba.MariafromCuba?8.WespeakChinese.youChinese?AreyouAretheyIsJaneDoDoDoeslikeDoescomeDospeak三.一般疑问句做肯定,否定回答AreyouMaria?肯定回答：Yes,主+助/系.否定回答:No,主+助/系+not.肯定回答：Yes,Iam.否定回答：No,I’mnot.2.问句和答语的助动词保持一致.1)Areyouastudent?肯:Yes,Iam.否：No,I’mnot.2)IsheKangkang?肯：Yes，heis.否：No，heisn’t.3)DotheylikeChinese?肯：Yes,theydo.否：No,theydon’t.4)Doesshehaveasmallmouth?肯：Yes,shedoes.否：No,shedoesn’t.3.问句和答语中的主语保持一致。（必须用主格）1)IsJanefromtheU.S.A?2)DoesKangkangcomefromChina?3)DoJaneandMarialikeChina?4)Isthisaruler?肯:Yes,sheis.否:No，sheisn’t.肯:Yes,hedoes.否:No,hedoesn’t.肯:Yes,theydo.否:No,theydon’t.肯:Yes,itis.否：No，itisn’t.5)Isthatadesk?6)Arethesebooks?7)Arethosepencils?8)Aretheseerasers?9)Isthatanorange?肯：Yes，itis.否：No，itisn’t.肯：Yes，theyare.否：No，theyaren’t.肯：Yes，theyare.否：No，theyaren’t.肯：Yes,theyare.否：No，theyaren’t.肯：Yes,itis.否：No，itisn’t.练习：给下列句子做肯定回答或否定回答。练习：给下列句子做肯定回答或否定回答。1.Areyouastudent?1.Areyouastuden...
