1、一般現(xiàn)在時之否法句,一、系動詞Be系列的否定句 二、情態(tài)動詞系列的否定句 三、行為動詞系列的否定句,什么是否定句？,對事物做出否定判斷的句子就是否定句。,一、系動詞be系列的否定句的構(gòu)成,主語 + 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.

2、7.The bag (not) mine.,isnt,arent,am not,isnt,arent,arent,isnt,二、情態(tài)動詞系列的否定句的構(gòu)成,主語 + 情態(tài)動詞 + not + 動詞原形 + 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 (

3、should not) be right. I (will not) go to Japan.,cant,mustnt,shouldnt,wont,三、行為動詞系列的否定句的構(gòu)成,主語 + 助動詞（do/does）+not +行為動詞原形 + 其他,什么時候用助動詞do，does呢？,當(dāng)行為動詞是第三人稱單數(shù)形式時，用助動詞does。 當(dāng)行為動詞是原形時，用助動詞do。,do not = does not=,dont,doest,These boys do not like playing football.,The girl does not read English every morni

4、ng.,2、The girl reads English every morning.,1、These boys like playing football.,一找 找行為動詞 二變 變助動詞（do、does）+行為動詞原形 三加 在助動詞后面加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、如果句中出現(xiàn)some在改否定句時 一定