肯定句变否定句.doc_第1页
肯定句变否定句.doc_第2页
肯定句变否定句.doc_第3页
全文预览已结束

下载本文档

版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领

文档简介

肯定句变否定句1. 简单句中含有系动词be和情态动词时,变否定句时需在系动词be和情态动词后加not。如: I am a teacherI am not a teacher He can help meHe cant help me 2. 简单句中谓语动词为行为动词时,要根据时态选用do的相应形式,把肯定句变为否定句。如: The little girl wants to go thereThe little girl doesnt want to go there He did his work yesterday He didnt do his work yesterday 3祈使句变否定句时,一般在句首加Dont,但Let us或Lets开头的祈使句在 Let us或 Lets后加not即可。如: Put them over thereDont put them over there Let us go homeLet us not go home 4主从复合句中,主句是I think,I believe等结构,变否定句时,形式上否定主句,实际上否定从句。如: I dont think chickens can swim 我认为鸡不会游泳。 5“had better 动词原形”,变否定句时为“had better not 动词原形”。如: Youd better go to school Youd better not go to school 6动词不定式变否定式时,常在不定式to前加not。如: The teacher tells me to do it The teacher tells me not to do it 7使役动词和感官动词(make,let,hear,see,watch等)后接省略to的不定式,此种不定式变否定句时只需在省略to的动词原形前加not。如: I saw her workI saw her not work 8特殊形式的否定句,有以下几种: (1)肯定句含有every-的合成词时,变否定句时改为no-。如: Everything is readyNothing is ready (2)肯定句中含有always, usually和ever时,变否定句时改为never。如: He is always late for schoolHe is never late for school (3)肯定句含有many,much时,变否定句时分别改为few,little。如: Many students know himFew students know him (4)肯定句中含有still时,变否定句时应改为no longer。如: Tom is still in bedTom is no longer in bed (5)肯定句含有both, bothand,all时,变否定句时应改为never,neithernor,none。如: Both of us are studentsNeither of us is a student (6)肯定句含有nearly, almost时,变否定句时应改为 hardly。如: Lily nearly knows him Lily hardly knows him (7)肯定句含有“形容词 enough”时,变为否定句时应改为“too 形容词的反义词”。如: He is tall enough to reach it.He is too short to reach it 9.肯定句变否定句时,某些形容词,不定代词,或副词等也会作相应的改变。例如:1). I can see some mountains far away. I cant see any mountains far away.(some 变成any)2). He has already have breakfast. He hasnt have breakfast yet.(already 变成yet)3). We can swim, too. We cant swim, either.(too变成either)4). Jim likes meat very much. Jim doesnt like meat at all. (very much变成 not at all)5)He likes singing and dancing. He doesnt like singing or dancing.(and 变成 or)10.not 和代词all, each, everyone, everybody,及副词both, quite, altogether, always等词连用时表示部分否定。No all the students pref

温馨提示

  • 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
  • 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
  • 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
  • 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
  • 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
  • 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
  • 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

评论

0/150

提交评论