小升初专项:陈述句变否定句.docx
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陈述句变否定句
陈述句:
是用来陈述一件事情或表示一种看法,可分为肯定句和否定句两种形式。
一、变否定句:
1.当谓语动词是be动词,am,isare或者过去时was,were时,直接在这些词后面加not构成否定形式,即amnot,isnot=isn’t,arenot=aren’t。
如果句子里有some,在否定句中要变成any。
and变成or。
Eg.Sheisabeautifulgirl.(改为否定句)
-Sheisn’tabeautifulgirl.
TherearesomestudentsinSunschool.(改为否定句)
-Therearen’tanystudentsinSunschool.
2.当句子中谓语动词是助动词will,情态动词can,could,should,must等时,直接在助动词和情态动词后加not变为否定句。
注意willnot=won’t,cannot=can’t,mustnot=mustn’t表示禁止。
如果句子里有some,在否定句中要变成any。
and变成or。
Eg.MyfamilywillgotoBeijingandQingdaonextSunday.(改为否定句)
-MyfamilywillnotgotoBeijingorQingdaonextSunday.
Theycanrunveryfast.(改为否定句)
-Theycan’trunveryfast.
3.Eg.谓语动词是行为动词而又没有助动词或情态动词时,必须在谓语动词前加助动词,一般现在时加助动词do,第三人称单数加does,一般过去时加did,再和not构成否定结构。
don't,doesn't,didn't后都用动词原形。
如果句子里有some,在否定句中要变成any。
and变成or。
EgTomflieskitesintheplayground.(改为否定句)
-Tomdoesn’tflykitesintheplayground.
Weoftenplayfootballafterclass.(改为否定句)
Wedon’toftenplayfootballafterclass.
练习
1)MikeisastudentatSunschool.(改为否定句)
Mike________________astudentatSunschool.
2)Therearesomeapplejuiceinthefridge。
(改为否定句)
There________________________applejuiceinthefridge.
3)Iamhappyandexcitedtohearthatgoodnews.(改为否定句)
Iam___________happy_____excitedtohearthatgoodnews.
4)Shewillgoswimmingnextweek.(改为否定句)
She__________goswimmingnextweek.
5)Myparentscancookmeatwithpotatoes.(改为否定句)
Myparents______________cookmeatwithpotatoes.
6)Youmustdoyourhomeworknow.(改为否定句)
You_______ _________doyourhomeworknow.
7)Jillhaslunchatschooleveryday.(改为否定句)
Jill__________lunchatschooleveryday.
8)Thechildrenhadagoodtimeattheparty.(改为否定句)
Thechildren___________agoodtimeattheparty.
9)Rosedidn'twatchTVthismorning.(改为肯定句)
Rose____________thismorning.
10)Shedoesexercisesathomeintheevening.(改成否定句、)
She____________exercisesathomeintheevening.
11)Hesaidsomethingimportantatthemeeting.(改为否定句)
He_________________importantatthemeeting.
12)HereadsEnglisheverymorning.
He______________Englisheverymorning.
13)Theycanswimacrosstheriver.
They________________swimacrosstheriver.
14)Ihavesomebreadtoeat.
I___________________________breadtoeat.
15)Theyareplayingbasketball.
They______________basketball.
16)Theteacherswillgotoameetingtomorrow.
Theteachers_____________gotoameetingtomorrow.
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