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助动词do/does的用法专题助动词do与does口诀（一）(do)变句型，先观察，陈述句中动用原,一般疑问do提前，否定don’t实动前。（二）(does)若是主语为三单，陈述句中动变形，一般疑问也简单，does放在句子前，否定doesn’t实动前，主动出现动还原。总结：含有实义动词的句子，进行句子转换时应借助于助动词do/does，主语是三单(he,she,it)时用does，其他用do。否定句在动词原形前加don’t/doesn’t，一般疑问句把do/does提前,特殊疑问句由特殊疑问词+一般疑问句。句子类型及结构肯定句：主语+动词+其它。主语是三单，动词用三单Ilikethisbluesweater.Tomlikesthisbluesweater.我喜欢这件蓝色的毛衣。Tom喜欢这件蓝色的毛衣。TomlikesEnglish.Tom喜欢英语。Ilikethisbluesweater.TomlikesEnglish.否定句：主+don’t/doesn’t+动原+其它Idon’tlikethisbluesweater.我不喜欢这件蓝色的毛衣。Tomdoesn’tlikeEnglish.Tom不喜欢英语。Ilikethisbluesweater.TomlikesEnglish.一般疑问句：do/does提前，其它照抄不变（Do/Does+主+动原+其它？），一人称变二人称。回答：Yes,主+do/does.No,主+don’t/doesn’t.Doyoulikethisbluesweater?Yes,Ido./No,Idon’t.你喜欢这件蓝色的毛衣吗？是的，我喜欢;不，我不喜欢。DoesTomlikeEnglish？Yes,hedoes./No.hedoesn’t.Tom喜欢英语吗？是的，他喜欢；不，他不喜欢。练一练：一、选择适当的词填空（用do和does/don’tdoesn’t填空）1.youlikesoccer?Yes,I.2.theylikeping--pong?Yes,they.3.TonyandBenlikebaseball?No,they.4.yourfriendsliketennis?Yes,they.5.yourbrotherlikebasketball?No,he.6.youlikebasketball?Yes,I.7.theylikesalad?No,they.8.Jennyhavewhitesweaters?Yes,she.9.Peterhaveblacktrousers?Yes,he.10.yourfatherlikeapples?Yes,he.11.yourfriendslikebananas?No,they.12.yourfatherandmotherhavemilkforbreakfast?Yes,they.13.I________(don’t/doesn’t）playsports.14.You_________(don’t/doesn’t）likeice-cream.15..Myparents________(don’t/doesn’t）wanttowatchTV.16.Hisfriend_______(don’t/doesn’t）eatbreakfast.17.Mary_______(don’t/doesn’t）likesalad.18.—hehaveatennisball?—Yes,he.19.—Annahaveaping-pongbat?—Yes,she.20.—MikeandErichavesomeballs?—No,they二.按要求完成句子。1.Jennyhasaping-pongbat.(改为一般疑问句)_____Jenny_____aping-pongbat?2.Iliketoeatvegetableseveryday.(改为一般疑问句)______youliketoeatvegetableseveryday?3.Theylikebananas.(改为否定句)They____________bananas.4.Tomlikesapples.(改为一般疑问句)______Tom______apples?5.DoesJohnlikechicken?(否定回答)—_______,_______________.6.Ilikesalad.(改为一般疑问句)_____________________salad?7.Doyoulikebananas?(作肯定回答)_______,_________________.8.Dotheylikemilk?(作否定回答)________,_______________.9.Doeshelikemilk?(作否定回答)_______,_______________10.Iliketomatoes.(把I改成he重写句子)He____________________.11.LindaandAlicelikecarrots.(改为一般疑问句并作肯定回答)_______________________________?_________________.12.你喜欢西红柿吗?_________youlike___________?13.你弟弟喜欢鸡蛋吗？不，他不喜欢。_______yourbrother______________?No,he_________.14.IhavethreeEnglishbooks.(改为否定句)IthreeEnglishbooks.15.Ihaveanewvolleyball.(改为一般疑问句)anewvolleyball?16.DoesLiLeihaveatennisball?(作否定回答)，.17.Ihaveacomputer.(改为否定句)Iacomputer.18.Shehasaping-pongball.(改为一般疑问句)sheaping-pongball?19.DoesHelenhaveadictionary?(作肯定回答)，.20.Tonyhasabaseballbat.(改为一般疑问句)_____Tony_____abaseballbat?五：翻译（将中文翻译成英文）1．你喜欢香蕉吗？是的，我喜欢。2．你妈妈喜欢苹果吗？是的，她喜欢。3．他喜欢篮球吗？是的，他喜欢。4．他们喜欢足球吗？是的，他们喜欢。5．Jenny有裙子吗？是的，她有。6．Tom有黑色长裤吗？不，他没有。7．你爷爷有钢笔吗？不，他没有。8．你爸爸和妈妈喜欢西红柿吗？是的，他们喜欢。答案如下：一、选择适当的词填空（用do和does/don’tdoesn’t填空）21.Doyoulikesoccer?Yes,Ido.22.Dotheylikeping--pong?Yes,theydo.23.DoTonyandBenlikebaseball?No,theydon’t.24.Doyourfriendsliketennis?Yes,theydo.25.Doesyourbrotherlikebasketball?No,hedoesn’t.26.Doyoulikebasketball?Yes,Ido.27.Dotheylikesalad?No,theydon’t.28.DoesJennyhavewhitesweaters?Yes,shedoes.29.DoesPeterhaveblacktrousers?Yes,hedoes.30.Doesyourfatherlikeapples?Yes,hedoes.31.Doyourfriendslikebananas?No,theydon’t.32.Doyourfatherandmotherhavemilkforbreakfast?Yes,theydo.33.I_____don’t__(don’t/doesn’t）playsports.34.You_____don’t____(don’t/doesn’t）likeice-cream.35..Myparents__don’t______(don’t/doesn’t）wanttowatchTV.36.Hisfriend__doesn’t_____(don’t/doesn’t）eatbreakfast.37.Mary__doesn’t_____(don’t/doesn’t）likesalad.38.—Doeshehaveatennisball?—Yes,hedoes.39.—DoesAnnahaveaping-pongbat?—Yes,shedoes.40.—DoMikeandErichavesomeballs?—No,theydon’t二.按要求完成句子。1.Jennyhasaping-pongbat.(改为一般疑问句)__Does___Jenny_have____aping-pongbat?2.Iliketoeatvegetableseveryday.(改为一般疑问句)___Do___youliketoeatvegetableseveryday?3.Theylikebananas.(改为否定句)They__don’t_______like___bananas.4.Tomlikesapples.(改为一般疑问句)_Does_____Tom__like____apples?5.DoesJohnlikechicken?(否定回答)—__No_____,___he_________doesn’t___.6.Ilikesalad.(改为一般疑问句)_Do_________you_____like____salad?7.Doyoulikebananas?(作肯定回答)_Yes____,_____I_______do_____.8.Dotheylikemilk?(作否定回答)__No____,__they_____don’t________.9.Doeshelikemilk?(作否定回答)___No____,____he____doesn’t_______10.Iliketomatoes.(把I改成he重写句子)He__likes___________tomatoes_______.11.LindaandAlicelikecarrots.(改为一般疑问句并作肯定回答)___DoLindaandAlicelikecarrots______?___________Yes,theydo______.12.你喜欢西红柿吗?__Do_______youlike______tomatoes_____?13.你弟弟喜欢鸡蛋吗？不，他不喜欢。____Does___yourbrother___like______eggs_____?No,he____doesn’t_____.14.IhavethreeEnglishbooks.(改为否定句)Idon’thavethreeEnglishbooks.15.Ihaveanewvolleyball.(改为一般疑问句)Doyouhaveanewvolleyball?16.DoesLiLeihaveatennisball?(作否定回答)No，he/shedoesn’t.18.Ihaveacomputer.(改为否定句)Idon’thaveacomputer.18.Shehasaping-pongball.(改为一般疑问句)Doesshehaveaping-pongball?19.DoesHelenhaveadictionary?(作肯定回答)Yes，shedoes.21.Tonyhasabaseballbat.(改为一般疑问句)____Does_Tony___have__abaseballbat?五：翻译（将中文翻译成英文）1．你喜欢香蕉吗？是的，我喜欢。Doyoulikebananas?/Yes,Ido.2．你妈妈喜欢苹果吗？是的，她喜欢。Doesyourmotherlikeapples?/Yes,shedoes.3．他喜欢篮球吗？是的，他