精选优质文档-倾情为你奉上四类句型(按照使用目的划分)(陈述句,疑问句,祈使句,感叹句)1 陈述句定义:说明一个事实或陈述一种看法Light travels faster than sound.(说明事实)The film is rather boring.(说明看法)以下重点讲解陈述句的否定形式.陈述句否定形式的用法例句1. 用not构成的否定句:主语+助动词/be/情态动词+not+He is not back yet.You shouldnt be so silly.I like the salad, but I dont like this soup.2. 祈使句的否定句:Dont+动词原形Dont worry. Ill look after you.Dont believe a word he says.Dont be so rude.3. 非谓语动词(不定式,分词,动名词)的否定式:把not放在to do;doing;的前面Its important