look at your books改为否定句
look at your books改为否定句为Don't look at your book.
否定句:我们中文里否定形式是在谓语前加“不”,比如“他不是老师”,“我不知道她是哪儿人。”那么英语里否定句又有什么和汉语不同的特点呢?
一、 一般说来,英语里用“not”构成否定,但又不是简单的在谓语前加“not”,具体可以分为三种情况:
1、如果句子中有系动词be或助动词be,have和will,“not”要加在它们后面:He is not(isn't) a teacher.他不是老师。I will not(won't) go to work today, because I has made an appointment with my dentist.我今天不去上班,因为我约了牙医。
2、如果句子中有情态动词,“not”同样要加在它们后面:We needn't go to school on Saturdays.我们星期六不用上学。You may not take photographs in the museum.你不能在博物馆里拍照。I may not go to the grocery store today.我今天可能不去杂货店。
3、如果谓语动词只有实义动词,没有系动词,助动词和情态动词,要在谓语动词前加do,does或did,在加not来表示否定:I like hamburgers, but she doesn't like them.我喜欢汉堡包,但她不喜欢。The girls don't talk too much in class.女孩们上课时说话不多。