Do和does用法解析

助动词包括do,does的用法●do用于当主语是第一人称I,第二人称you及复数时（复数包括we,they,these,those及两个以上的人或者事物。●does用于当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）。含有实义动词的句型结构变换一、肯定陈述句1．当主语是I，you及复数时，谓语动词用原型。Eg.Iknowit.（Eg.表示例如的意思）Theyhavetwovolleyballs.TinaandTomlikeicecream.2.当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）。谓语动词要变为第三人称单数形式。P98特别要注意have—hasEg.Shehasasetofkeys.Heknowsmyname.Tomneedsacomputergame.二、肯定陈述句变换成否定陈述句1．当主语是I，you及复数时，在谓语动词前加donot=don’tEg.Idon’tknowit.Theydon’thavetwovolleyballs.TinaandTomdon’tlikeicecream.2.当主语是第三人称单数时,在谓语动词前加doesnot=doesn’t,谓语动词打回原型Eg.Shedoesn’thaveasetofkeys.Hedoesn’tknowmyname.Tomdoesn’tneedacomputergame.三、肯定陈述句变换成一般疑问句采用“一加二变三问号”。一加：当主语是I，you及复数时，在句子开头加do;当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）,在句子开头加does;二变：变大小写;第一人称变为第二人称（I/we变为you,my/our变为your）；当主语是第三人称单数时,谓语动词要打回原型。三问号：在句末加问号。肯定回答；Yes,主语+do/does.否定回答：No,主语+don’t/doesn’t.(主语要用相应的人称代词主格)Eg.Doyouknowit?Yes,Ido./No,Idon’t.Dotheyhavetwovolleyballs?Yes,theydo./No,theydon’t.DoTinaandTomlikeicecream?Yes,theydo./No,theydon’t.Doesshehaveasetofkeys?Yes,shedoes./No,shedoesn’t.Doesheknowyourname?Yes,hedoes./No,hedoesn’t.DoesTomneedacomputergame?Yes,hedoes./No,hedoesn’t.四、肯定陈述句变换成特殊疑问句（对画线部分提问）特殊疑问词+一般疑问句？（去掉画线部分）Eg.Theyhavetwovolleyballs.------------Whatdotheyhave?Heknowsmyname.-------------Whatdoesheknow?Exercise1：把下列句子变成否定句，一般疑问句并做出肯否定回答，并对划线部分提问。1.Iknowtheanswer.否定句：I（know）theanswer.一般疑问句：you（know）heanswer?肯定回答：,I.否定回答：,I.对划线部分提问：2Heplayssoccereveryday.否定句：He（play）soccereveryday.一般疑问句：he（play）soccereveryday?肯定回答：,He.否定回答：,He.3.Thebooksareontheteachers’desk.否定句：Thebooks(be)ontheteachers’desk对划线部分提问：arethebooks?Exercise21.IhavebeentoBeijin(一般疑问句)______________________toBeijin?2.Wecanseesomebirds.(一般疑问句)____________see__any_birds?(any用在疑问句中，而some用在陈述句中)3.Hedesignsclothes.(一般疑问句)______he________clothes?4.Thereweresomeflowersontheteachers’desk.(一般疑问句)__________________flowersontheteachers’desk?5.Thereweresomeapplesonthetree.(否定句)There______________any__applesonthetree.(any用在疑问句中，而some用在陈述句中)6.Ithinkheisveryold.(否定句)7.Pleasecolouritgreen.(否定句)I______thinkhe______veryold.____________colouritgreen.8.Youmayhavesomehotdogs.(一般疑问句)_________I__________any___hot__dog?.10.Thissignmeans“Nosmoking”.What______thissign_________?11.Mypencilsareinthepencil-box.(对划线部分提问)____________yourpencils?12.Igotupatsixyesterday(对划线部分提问)______________________yougetupyesterday?14.Heishappy,becauseheisgoingtotakeatriptomorrow.（就划线部分提问）_________is___he___happy?