1、主讲人：代老师主讲人：代老师变否定句方法变否定句方法 一、一、找找be 和情和情,后加后加not!二、二、无无be 和情和情，动词前动词前 加加 dont和和doesnt，didnt.三、三、改改 some 改改any，切记动词改原形。切记动词改原形。实义动词的否定句实义动词的否定句否定句中否定句中and，some与与any的用法的用法 情态动词的否定情态动词的否定 Be动词的否定动词的否定构成：be+not I am a girl.I am a girl.not You are short.You are short.not She is ugly.She is ugly.not把下列句子变
2、成否定句 1.I am a girl._ 2.He is my teacher._ 3.Jimmys dad is in the bathroom._ 4.She is watching TV now _ 5.There is a bird on my head._情态动词情态动词 can、may、must can 情态动词，可以，能情态动词，可以，能 主语主语+情态动词情态动词+动词原形动词原形 e.g.You/He/I can hear the music.I/She/You/He can dance.构成：在构成：在can 后加后加not,其余部分不变。其余部分不变。can not=ca
3、nt e.g.The birds can fly.The birds can not=cant fly.Mary can dance.Mary cant=cant dance.Practice I can swim._ She can dance._ My mother can hear with her ears._ Lucy and Linda can walk to school._ My Dad can see some children in the garden._3、实意动词的否定句 1 谓语是动词原形，在其前加谓语是动词原形，在其前加dont1)I have a book.I
4、dont have a book.2)They like Chinese.They dont like Chinese.3)We come from China.We dont come from China.2 谓语动词是第三人称单数（动词谓语动词是第三人称单数（动词+s），在），在动词前加动词前加doesnt，动词用原形动词用原形。1)She has a small mouth.She doesnt have a small mouth.2)Maria likes China.Maria doesnt like China.3)Jane comes from the U.S.A.Jane
5、doesnt come from the U.S.A.I/You/We/They/The students+dont+动词原形动词原形+其它其它He/She/ItMy father第三人称单数第三人称单数+doesnt+动词原形动词原形+其它其它构成：1.否定句中and要变为or2.否定句中some要变为anyHe can sing and dance.He cant sing or dance.He has some bread and juice.He doesnt have any bread or juice.1.I want some lamb.I dont want any lam
6、b.2.He wants some lamb.He doesnt want any lamb.1.I like vegetables.I dont like vegetables.2.You like vegetables.You dont like vegetables.3.He likes vegetables.He doesnt like vegetables.6.They go to school.They dont go to school.4.We go to school.We dont go to school.5.You go to school.You dont go to school.变否定句口诀变否定句口诀有情情有是是加not，无情情无是是借dont/doesnt,借借dont/doesnt 照妖镜照妖镜,后面动词动词现原形，否定some变any。
