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1、一般现在时之否法句,一、系动词Be系列的否定句二、情态动词系列的否定句三、行为动词系列的否定句,什么是否定句？,对事物做出否定判断的句子就是否定句。,一、系动词be系列的否定句的构成,主语 + be + not + 其他,is not =are not=,isnt,arent,1.Kitty (not) an English girl.2.We (not) students.3.I (not) from Taizhou.4.She (not) tall.5.Lucy and Lily （not）good friends. 6.Those chairs (not) broken.7.The ba
2、g (not) mine.,isnt,arent,am not,isnt,arent,arent,isnt,二、情态动词系列的否定句的构成,主语 + 情态动词 + not + 动词原形 + 其他,can not =could not =must not =would not =will not = should not =may not =,cant,couldnt,mustnt,wouldnt,wont,shouldnt,may not,She (can not) speak English.You (must not) open the door.They (should not) be
3、right.I (will not) go to Japan.,cant,mustnt,shouldnt,wont,三、行为动词系列的否定句的构成,主语 + 助动词（do/does）+not +行为动词原形 + 其他,什么时候用助动词do，does呢？,当行为动词是第三人称单数形式时，用助动词does。当行为动词是原形时，用助动词do。,do not =does not=,dont,doest,These boys do not like playing football.,The girl does not read English every morning.,2、The girl rea
4、ds English every morning.,1、These boys like playing football.,一找 找行为动词二变 变助动词（do、does）+行为动词原形三加 在助动词后面加not,1.I like red. 2.They like orange. 3.We walk to school every day.,I dont like red.,They dont like orange.,We dont walk to school every day.,10,4. His brother plays football after school.5. It looks like a hat. 、6. She has a cat at home.,His brother doesnt play football.,It doesnt look like a hat.,She doesnt have a cat at home.,11,提示：1、如果句中出现some在改否定句时一定要将其变为any。2、如果句中出现and在改否定句时一定要将其变为or。3、如果句中出现too在改否定句时一定要将其变为either。,
