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..\水边的阿狄丽娜.WAV一般现在时:表示经常、反复发生的事情和存在的状态。构成：主语+动词原型。（主语为第三人称单数）主语+动词三单形式。否定句：主语+don’t+动词原形。（主语为第三人称单数）主语+doesn’t+动词原形。一般疑问句：Do+主语+动词原形Does+主语+动词原形（主语为第三人称单数）回答：Yes，主语+do/does.No，主语+don’t/doesn’t.eg:Ihaveabook.Doyouhaveabook?Yes,Ido.No,Idon’t.Shehasabook.Shedoesn’thaveabook.Doesshehaveabook?Yes,shedoes.No,shedoesn’t.1、情态动词(canmaymust等)2、连系动词be(am,is,are)动词为代表）3、行为动词（实义动词）4、助动词（do或者does）1、找。找出所给句子中有没有情态动词（can,may,must）或者be动词。若有情态动词（can,may,must）或者be动词，则直接提前构成一般疑问句，或在其后面加not构成否定句。2、加。一般现在时，则根据需要添加助动词do或者does.•变一般疑问句则在句子前面加助动词do或者does.•变否定句则在主语后面加助动词don’t或者doesn’t.。什么情况下用do，什么情况下用does呢？Jimhasasister.Jimdoesn'thaveasister.DoesJimhaveasister?当使用了助动词以后，动词必须恢复原形！！！Theyhavesomeboats.Dotheyhaveanyboats?Theydon’thaveanyboats.将下列句子进行相应的转换：1、IhaveanEnglishbook.DoyouhaveanEnglishbook?Yes,Ido.No,Idon’t.Idon’thaveanEnglishbook.一般疑问句否定句2.Thebrothersgotoschoolat7:00.3.MissWanghasabigfamily.Dothebrothersgotoschoolat7:00?Yes,theydo.No,theydon’tThebrothersdon’tgotoschoolat7:00.DoesMissWanghaveabigfamily?Yes,shedoes.No,shedoesn’tMissWangdoesn’thaveabigfamily.一般疑问句一般疑问句否定句否定句4.Thewatchlooksnice.5.Jim’smotherhassomephotos.Doesthewatchlooknice?Yes,itdoes.No,itdoesn’t.Thewatchdoesn’tlooknice.DoesJim’smotherhaveanyphotos?Yes,shedoes.No,shedoesn’t.Jim’smotherdoesn’thaveanyphotos.一般疑问句否定句