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1、精选资料欢迎下载陈述句变否定句陈述句 ：是用来陈述一件事情或表示一种看法，可分为肯定句和否定句两种形式。一、 变否定句：1. 当谓语动词是be 动词,am, is are或者过去时was, were 时，直接在这些词后面加not 构成否定形式，即am not, is not=isnt , are not=arent。如果句子里有some，在否定句中要变成any。and 变成 or。Eg. She is a beautiful girl. (改为否定句 ) - She isn t a beautiful girl.There are some students in Sun school. (
2、改为否定句 ) -There arent any students in Sun school.2. 当句子中谓语动词是助动词will, 情态动词 can, could, should, must 等时，直接在助动词和情态动词后加not 变为否定句。注意 will not = won t, can not=can t, must not =mustnt 表示禁止。 如果句子里有some， 在否定句中要变成any。 and 变成 or。Eg .My family will go to Beijing and Qingdao next Sunday . (改为否定句 ) -My family wi
3、ll not go to Beijing or Qingdao next Sunday. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 4 页精选资料欢迎下载They can run very fast. (改为否定句 ) -They can trun very fast. 3. Eg.谓语动词是行为动词而又没有助动词或情态动词时，必须在谓语动词前加助动词，一般现在时加助动词do ，第三人称单数加 does， 一般过去时加did， 再和 not 构成否定结构。 dont, doesnt, didnt 后都用动词原形。如果句子里有som
4、e，在否定句中要变成 any。and 变成 or。Eg Tom flies kites in the playground. (改为否定句 ) -Tom doesn t fly kites in the playground.We often play football after class. (改为否定句 ) We dont often play football after class.练习1）Mike is a student at Sun school. (改为否定句 ) Mike _ _ a student at Sun school. 2）There are some apple
5、 juice in the fridge。 （改为否定句）There _ _ _ apple juice in the fridge. 3) I am happy and excited to hear that good news. （改为否定句）精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 4 页精选资料欢迎下载I am _ _ happy _ excited to hear that good news. 4) She will go swimming next week. （改为否定句）She _ _ go swimming
6、next week. 5) My parents can cook meat with potatoes . （改为否定句）My parents _ _ cook meat with potatoes. 6) You must do your homework now. （改为否定句）You _ do your home work now. 7) Jill has lunch at school every day. (改为否定句 ) Jill _ _ lunch at school every day. 8) The children had a good time at the party
7、. ( 改为否定句 ) The children _ _ a good time at the party. 9) Rose didnt watch TV this morning.（改为肯定句 ) Rose _ _ this morning. 10) She does exercises at home in the evening. （改成否定句、）She _ _ exercises at home in the evening. 11) He said something important at the meeting.（改为否定句）精选学习资料 - - - - - - - - - 名
8、师归纳总结 - - - - - - -第 3 页，共 4 页精选资料欢迎下载He _ _ _ important at the meeting. 12) He reads English every morning. He _ _ English every morning. 13) They can swim across the river. They _ _ swim across the river. 14) I have some bread to eat. I _ _ _ bread to eat. 15) They are playing basketball. They _ _ basketball. 16) The teachers will go to a meeting tomorrow. The teachers _ _ go to a meeting tomorrow. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 4 页