助动词-do-does的练习

be动词，情态动词，助动词do/does的用法区别及练习1.由连系am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如：肯定句:Heisastudent.一般疑问句:Isheastudent?否定句:Heisnotastudent.画线提问:对he提问:Whoisastudent?对astudent提问:Whatishe?orWhatdoeshedo?2.由情态动词can,may,should等构成的句子:变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可.例如:肯定句:Shecanswim.一般疑问句:Cansheswim?否定句:Shecannotswim.画线提问:对she提问:Whocanswim?对swim提问:Whatcanshedo？3.由行为动词构成的句子:需要加助词do或does.变一般疑问句时把do/does放在句子前面.变否定句时把don’t/doesn’t放在动词的前面。要注意观察动词的形式并对号入座。一般疑问句和否定句的动词三单式都要变回原型。play-----doplays-----does例如:肯定句:Theyplayfootballafterschool.Heplaysfootballafterschool.一般疑问句:Dotheyplayfootballafterschool?Doesheplayfootballafterschool?否定句:Theydon't(donot)playfootballafterschool.Hedoesn’t’playfootballafterschool.画线提问:对they/he提问:Whoplaysfootballafterschool?对playfootball提问:Whatdotheydoafterschool?Whatdoeshedoafterschool?对afterschool提问:Whendotheyplayfootball?Whendoesheplayfootball?针对性练习按要求改写句子：1.Iknowtheanswer.(一般疑问句)______________________theanswer?2.Wecanseesomebirds.(一般疑问句)____________see______birds?3.Hedesignsclothes.(一般疑问句)______he________clothes?4.Therearesomeflowersontheteachers’desk.(一般疑问句)__________________flowersontheteachers’desk?5.Therearesomeapplesonthetree.(否定句)There__________________applesonthetree.6.Ithinkheisveryold.(否定句)I______thinkhe______veryold.7.Pleasecolouritgreen.(否定句)____________colouritgreen.8.Thesedoctorsarehelpful.(变否定句)_____________________________.9.Youmayhavesomehotdogs.(一般疑问句)_________________________________?.10.Therearen’tanypearsinthebox.(同义句)Thereare______pearsinthebox.11.Thissignmeans“Nosmoking”.What______thissign_________?12.Shelooksyoung.（改一般疑问句）________she_______young?13.Sheisyoung.（改为一般疑问句）________________________?14.Mypencilsareinthepencil-box.(对划线部分提问)____________yourpencils?15.Igetupatsixeveryday.(对划线部分提问)______________________yougetupeveryday?16.Theyliketowalkhome.(改为一般疑问句)______they_______________________________?17.Thesearecars.(用buses改写成选择疑问句)Arethesecars____________?18.Myplantisonemonthold.(就划线部分提问)__________________________plant?19.Twoboysareinourhouse.(改为therebe句型)____________twoboysinourhouse.20.Myplanthastwogreenleaves._______________________________________plant__________?21.MissLigoestoHongKongbyplane.（同义句）MissLi_________________HongKong.22.Thewomenworkintheshoefactory.（就划线部分提问）____________________women__________?23.Heishappy,becauseheisgoingtotakeatriptomorrow.（就划线部分提问）_____________________________?24.Myfathercancookthemeals.（就划线部分提问）_______________________father__________?25.Youshouldaddwateroften.（一般疑问句）____________________wateroften?一、变否定句时相关词的改变肯定句变否定句时，除将谓语变为否定式外，句中其他词语也可能随之改变，如将some改为any，too和also改为either，already改为yet，and改为or等：Therearesomebirdsinthetree.树上有些鸟。→Therearen’tanybirdsinthetree.树上没有鸟。Helikesthegirl,too.他也喜欢这个女孩。→Hedoesn’tlikethegirl,either.他也不喜欢这个女孩。Wehavealreadyseenthefilm.我们已看过这部电影。→Wehavenotseenthefilmyet.我们没有看这部电影。Helikessinginganddancing.他喜欢唱歌和跳舞。→Hedoesn’tlikesingingordancing.他不喜欢唱歌也不喜欢跳舞。二、部分否定与完全否定比较以下句子：Allofuslaughedwhenweheardit.听到这事时我们都笑了。(肯定句)Allofusdidn’tlaughedwhenweheardit.听到这事时我们并未都笑。(部分否定)Notallofuslaughedwhenweheardit.听到这事时我们并未都笑。(部分否定)Noneofuslaughedwhenweheardit.听到这事时我们都没笑。(完全否定)【注】可能涉及部分否定的词语有both,all,always,every等，即notboth表示“并非两者都”，notall表示“并非所有的都”，notalways表示“并非总是”，notevery表示“并非每个…都”。