情态动词变否定句和一般疑问句

1）若句中有系动词（be）、助动词、情态动词或have（作“有”讲）时,将其提到主语前,句末用问号.例如：Heisafirst-yearstudent.→Isheafirst-yearstudent?

肯定句:SheteachesusChinese.否定句:Shedoesn'tteachusChinese.一般疑问句:DoessheteachyouChinese?肯定句:Mybrotheri

举最简单的例子(1)Youare(be)astudent.否Youarenotastudent.问Areyouastudent?(2)Youcandoit.否Youcannotdoit.问Canyou

用于表示“需要,必要”之意.做情态动词时,仅用于否定句和疑问句,只有现在时,过去式要用needn'thave,疑问式用need+人称?,否定式用neednot(即needn't）,1．—Needwel

借助助动词do,注意人称.例：Helikesswimming.疑问：Doeshelikeswimming?否定：Hedoesnotlikeswimming.

4.（1）Monadoesnoteatanyofhealthyfoodeveryday.（2）DoesMonaeatlotsofhealthyfoodeveryday?5.(1)Theydonotpl

后面必须跟宾语,意义才完整的实义动词,叫做及物动词（transitiveverb）.英语中的及物动词有：interest,worry,guss,please,surprise,love等例如：Ibel

常见的情态动词包括：must;may;can;needmay:否定:No,youmaynot疑问：MayI.need：否定:No,youneedn't.疑问：MustI.（或者NeedI.）must否

变一般疑问句,直接把系动词放在前面,否定在系动词后面加否定词not无系动词时（也没有情态动词）,要借助助动词do,does,did等,把这些词放在句前有情态动词是,直接把情态动词放在前面再问：无系动词

一般疑问句：Cantheyswim?否定句：Theycan'tswim.或Theycannotswim.

1Theycanswim.Cantheyswim?Theycantswim2IliketoreadEnglish.DoyouliketoreadEnglish?IdontliketoreadEngli

、含有be动词的陈述句变一般疑问句和否定句1Thestudentisatschool.Isthestudentatschool?thestudentisnotatschool.2Thestudents

你指的是实义动词作谓语的情况吧.一般疑问句以助动词do开头,后面不变.如：DoIknowyou?特殊疑问句在一般疑问句前加疑问词.如：HowdoIcook?否定句在动词原形前加do的否定形式,按时态变

Ihavetogotoschool.Idon'thavetogotoschol.DoyouhavetogotoSchool?Yes,Ido.No,Idon't.

含must的肯定句,在改为一般疑问句时,must提到句首；在改为否定句时,也通常将must改为need't.

MayIcomein?No,youcan't.Musthewaithere?No,heneedn't.Couldyouhelpme?Sorry,Ican't.Mightshedropit?No,she

情态动词用法归纳情态动词有can(could),may(might),must,haveto,shall(should,will(would),dare(dared),need(needed),oug

hi,boy.canyoubemygirlfiriend?

否定句和一般疑问句的变法是一样的,能找到疑问句的,否定句也应该会.

Willyouwakeupat7:00tomorrow?   Tomorrowiwillnotwakeupat7:00.Willyoueatbreakfastat7:15