肯定式否定式什么叫陈述句?用来说明一个事实和表达说话人的看法或观点的句子叫做陈述句。陈述句朗读时通常用降调,句末用句号。Sheisagoodstudent.1.主语+系动词+表语2.主语+谓语动词3.主语+谓语动词+宾语4.主语+谓语动词+宾语+宾语补足语主语+系动词+表语这是我爸爸。Thisismyfather.今天暖和。Itiswarmtoday.主语+谓语动词老师笑了。Theteachersmiled.我不会读。Ican'tread.主语+谓语动词+宾语我想要一个热狗。Iwantahotdog.我喜欢她。Ilikeher.主语+谓语动词+宾语+宾语补足语她英语讲得好。shespeaksEnglishwell.我很喜欢她。Ilikeherverymuch.请判断下面句子是不是肯定句。Hisfatherworkshard.Thecatrunsfast.Idon'tlikemeat.Theylikereadingbooks.否定句是指句意含有不,没有等意思的句子.Heisnotastudent.他不是学生。Iamnotaboy.我不是一个男孩。1.在be动词后加not2.在can,should,will等后加not3.不含be动词也不含情态动词的,在动词前加助动词否定形式don't/doesn't/didn't4.当句子是祈使句时在be动词后加not,其他照抄is→isnotisn'tare→arenotaren'tam→amnotwas→wasnotwasn'twere→werenotweren't肯:Heisabasketballplayer.否:Heisnotabasketballplayer.肯:Thereisadeskintheroom.否:Thereisnotadeskintheroom.肯:TheyareEnglishmen.否:TheyarenotEnglishmen.我是一名老师。Iamateacher.我不是老师。Iamnotateacher.我们是好学生。Wearegoodstudents.我们不是好学生。Wearenot(aren't)goodstudents.他很老。Heisold.他不老。Heisnot(isn't)old.在can,should,will等后加not,其他照抄can→cannotcan'tshould→shouldnotshouldn'twill→willnotwon't我会骑自行车。Icanrideabike.Icannot(can't)rideabike.他明天会去学校。Hewillgotoschooltomorrow.Hewillnot(won't)gotoschooltomorrow.•Weeatapples.否:Wedon’teatapples.•Heeatsapples.否:Hedoesn’teatapples.•Iwenttoschoolyesterday.否:Ididn’tgotoschoolyesterday.主语+don’t/doesn’t/didn’t+动词原形+其它祈使句,就是用来命令,要求别人做某事的句子。我们每天都会用到这种句子。祈使句的特点是:省略主语,动词用原形,说话人通常当着听话人讲话,所以省略主语。(you)Standup!(you)Openthedoor.(you)Havedinnner.(you)Givemeyourmoney.祈使句的肯定句变否定句只需要在动词前加don’t,句子如含有some就要变any.•Givemesomemoney.否:Don’tgivemeanymoney.•Comehere.否:Don’tcomehere.•beagoodboy.否:Don’tbeagoodboy.要将some变成anyIwantsomeoranges.否:Idon’twantanyoranges.Therearesomepupilsintheclassroom.否:Therearenotanypupilsintheclassroom.1.HisfatherisanEnglishteacher.Hisfatherisn'tanEnglishteacher.2.Thesecatsarecrying.Thesecatsaren'tcrying.3.Theycanswim.Theycannotswim.4.IlikereadingEnglish.Idon'tlikereadingEnglish.5.Iwenttoschoolonfoot.Ididn'tgotoschoolonfoot.将下列句子变否定句6.Gototheplayground.Don'tgototheplayground.7.SpeakEnglish.Don'tspeakEnglish.8.Givemesomesausages.Don'tgivemeanysausages.9.Tellmesomestories.Don'ttellmeanystories.10.Bemyfriends.Don'tbemyfriends.