七年级英语一般疑问句和特殊疑问句课件.ppt

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1、一般疑问句和特殊疑问句观察一下，这些肯定句变成否定句的规律是怎么样的？be动词肯定句:Theyareinthepark.否定句：Theyarenotinthepark.Be型esentation1.Thereisabigclock.句中有be(amisare)动词,变否定句时，需要在(be)后加not.2.Thisismybag.3.IamastudentThereisnotabigclock.Thisisnotmybag.Iamnotastudent.情态动词Hecanplaytheguitar.Hecannotplaytheguitar.Hecouldbeheresoon.

2、Hecouldnotbeheresoon.Shemayloseherway.Shemaynotloseherway.Wemustfollowthetrafficrules.Wecan'tfollowthetrafficrules.Helikesthedogs.Hedoesn'tlikethedogs·Icandoitverywell.Icannotdoitverywell.Hecansing.Hecannotsing.句中有情态动词（）,变否定句时，需要在()后加not.Can型cancan助动词Shehassomepencils.Shehasnotsomepencils.We

3、learnEnglishatone.Wedon’tlearnEnglishatone.Shedoesn'thaveabook.b.Lucyhasmanybooks.(变否定句)Lucydoesn'thavemanybooks.c.Helikesapples.(变否定句)Hedoesn’tlikeapples.实义动词的否定句：若主语为第三人称单数，在实义动词前加上助动词”doesn’t实义动词要还原,注意:“doesn’t”是加上去的，不是原句里面的。a.Shehasabook.(变否定句)实义动词型一、肯定句改否定句的方法——一步法1.有be动词(isareamwerewas

4、)/情态动词(can，could,will,would,shall,should，must，may)的。在be动词/情态动词后后加not。(some改成any）2.无be动词/情态动词，一般现在时在动词前加don’t第三人称单数前doesn't/一般过去式didn’t’。3.加doesn't/didn’t的句子注意，句子动词要变成原型。观察一下，这些肯定句变成一般疑问句的规律是怎么样的？肯定句:Theyareinthepark.一般疑问句:Aretheyinthepark?Be型esentation1.Thereisabigclock.Be动词提到句首，其他照抄，句尾加问号。I

5、变为you，my变为your.some变any.Is?2.Thisismybag.Isthisyourbag?3.IamastudentAreyouastudent?thereabigclockHecanplaytheguitar.Canheplaytheguitar?·Icandoitverywell.Canyoudoitverywell?Hecansing.Canhesing?can提前，其他照抄（I变为youmy变为your，some变为any）.Yes.Ican.No.Ican’t.Yes.hecan.No.hecan’t.Can型Helikesthedogs.Does

6、helikethedogs?1.HegoestoschoolonMonday.2.HegoesswimmingonFriday.DoesDoes3、Iwashmyfaceat8o‘clock.Do4、Yougetupat7o’clock.DohegotoschoolonMonday?hegoswimmingonFriday?youwashyourfaceat8o‘clock?yougetupat7o’clock?实义动词型some变anyTherearesomebooksonthedesk.Arethereanybooksonthedesk?2.Iamateacher.Arey

7、ouateacher?3.Therearetwenty-fivestudentsinmyclass.Aretheretwenty-fivestudentsinyourclass?二、肯定句改一般疑问句的方法——三步法1.有be动词/情态动词：be动词/情态动词提到句首，其余照抄，(some改成any，第一人称变为第二人称my改成your,I改成you,we改成you,our改成your）句末用问号。2.无be动词/情态动词，在句首加Do/Does/Did，其余照抄，(some改成any，第一