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.Idon’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.Hedoesn’tlikeapples.③时态为过去时的,要加didn’t而且动词过去式要改为原形,例:Iwenttoschoolyesterday.→Ididn’tgotoschoolyesterday.4.肯定句中的some在否定句中应改为any如:Therearesomestudentsintheclassroom.Therearenotanystudentsintheclassroom.将下列各句改成否定句1、Tom’sbrotheriswalkinginthepark.______________________________________________________2、Therearesomebooksinthebookcase.______________________________________________________3、ThestudentsofClass5arecleaningtheclassroom.______________________________________________________4、I’mastudent.5、Stopandwaitataredlight._________________________________________________6、Yourfathercanrideabike.______________________________________________________7、Theycanplayfootballafterschool.______________________________________________________8、WecomefromChina.______________________________________________________9、Touchthedoor.______________________________________________________将下列否定句变肯定句1、Don’tgoataredlight.2、Don’trunontheferry._______________________________________________3、Idon’tgotoschool.4、Theferrydoesn’twork._______________________________________________5、Don’tturnleftontheroad.______________________________________________________