小学英语语法：把肯定句改成否定句

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1、专题:把肯定句改成否定句把肯定句改成否定句分以下情况：1、句中有be动词的，在be动词后加not；2、句中有情态动词的（can,should，must，would），在情态动词后面加not；3、句中没有be动词和情态动词的，在动词前加don’t或doesn’t；①句中动词为原形的，加don’t.如：Ilikeapples.àIdon’tlikeapples.②句中动词为三单式的，加doesn’t，并将三单式的动词还原成原形。如：Helikesapples.àHedoesn’tlikeapples.③时态为过去时

2、的,要加didn’t而且动词过去式要改为原形,例:Iwenttoschoolyesterday.→Ididn’tgotoschoolyeaterday.4.肯定句中的some在否定句中应改为any如：Therearesomestudentsintheclassroom.àTherearenotanystudentsintheclassroom.将下列各句改成否定句1、           Tom’sbrotheriswalkinginthepark._______________________________

3、_______________________2、           Hisfatherisdrivingabus.______________________________________________________3、           ThestudentsofClass5arecleaningtheclassroom.______________________________________________________4、           Theirdogisplayinginthe

4、room.______________________________________________________5、           TomandMaryarefriends.______________________________________________________6、        Thesebusesarenew.______________________________________________________7、         Therearesomebooksin

5、thebookcase.______________________________________________________8、          Thereisabananainthebox.______________________________________________________9、           I’mastudent.______________________________________________________10、       Sheisafarmer._

6、_____________________________________________________11、       Yourfathercanrideabike.______________________________________________________12、       Mr.Licandrawpictures.______________________________________________________13、       Theycanplayfootballafte

7、rschool.______________________________________________________14、       IcangotoShanghaiZoo.______________________________________________________15、       Youshouldclimbthetree.______________________________________________________16、       WecomefromChina.

8、______________________________________________________17、       It’stimeforsports.______________________________________________________18、       Welikethemask.__________________________________