be动词一般动词（实义动词）情态动词的否定句 I am not a student.我不是学生。 I don't know him.我不认识他。 He can't speak English.他不会说英语。 （一）be动词的否定句 a.句型：主语+be动词+not～. I wasn't good at English.我英语不好。 He isn't hungry.他不饿。 b.进行时和被动语态（现在时、过去时、进行时）都有be动词，所以它们的否定句与be动词的否定句同形。（详见第十三章被动语态） They aren't cleaning the  room.（现在进行时）他们没在打扫房间。 The child was not looked after.（过去时的被动语态）这个孩子以前没有被照顾过。 c.将来时（will，shall）、完成时及情态动词的被动语态不能用be动词的否定句型。 They will not be sent to the front.（√）  They will be not sent to the front.（×）他们将不会被送到前线。 初一英语练习题 快速记单词 英语语法练习题 （二）情态动词的否定句 句型：主语+情态动词+ not +动词原形 I cannot do it myself.我自己做不了这件事。 You mustn't take the books out.你们一定不能把书拿出去。 （三）一般动词的否定句 句型：主语+ do（does， did）+ not +动词原形 注意：否定式的缩略形 is not→isn't are not→aren't Was not→wasn't were not→ weren't do not→don't does not→doesn't did not→ didn't Can not→can't will not→ won't must not→ mustn't have not→ haven't has not→ hasn't had not→hadn't am not无缩写形式，应为I'm not形式。 He doesn't do his homework every day.他不是每天都做作业。 They didn't have the class-meeting yesterday.他们昨天没开班会。 They don't live in Shanghai.他们不住在上海。 （四）现在完成时的否定句 句型：主语+ have（has）+ not +动词的过去分词～. I haven't finished reading the book yet.这本书我还没读完。 He hasn't had his breakfast yet.他还没吃早饭呢。 （五）过去完成时的否定句 句型：主语+ had + not +动词的过去分词～. He hadn't finished reading the book by the end of last month.截至上月末，他还没看完这本书。