1 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=isn’t , are not=aren’t。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. (改为否定句 ) -There aren’t 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 =mustn’t 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 will not go to Beijing or Qingdao next Sunday. 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2 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。 don't, doesn't, didn't 后都用动词原形。如果句子里有some，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 don’t 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 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）I am _____ ______ happy _____ excited to hear that good news. 4) She will go swimming next week. （改为否定句）She _____ _____ go swimming next we...
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