.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 isnt a beautiful girl.There are some students in Sun school. (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 = wont, can not=cant, must not =mustnt 表示禁止。如果句子里有some