be动词-情态动词及助动词用法.docx

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1、七年级英语双休日作业班级：姓名：等级英语句型变更总结练习工、含有be动词am,is,are构成的句子：受一般疑问句时把am,is,are提到句子的前面，句尾用问号即可.变否定句时干廉在am,is,are后面加not即可.例如：确定句:Heisastudent,一般疑问句：astudent?否定句：Heastudent.确定句：WearefromChina.一般疑问句：fromChina?否定句：WefromChina2 .由情态动词can,may,should等构成的句子：变一般展问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时干It在can,may,后面加not即可.例如：

2、确定句：Shecanswim.一般疑问句：sheswim?否定句：Sheswim.3 .由行为动词构成的句子：须要加助词d。或does.变一般爰问句时把do/does放在句子前面.变否定句时在主语后面加don,t/doesnt,谓语用动词原形.例如：确定句：Theyplayfootballafterschool.一般疑问句：playfootballafterschool?否定句：Theyfootballafterschool.确定句iTomwatchesTVeveryday.一般疑问句：TomTVeveryday?否定句：TomTVeveryday.留意：变否定句时相关词的变更确定句变否定句时

3、，除将谓语变为否定式外，句中其他词语也可能随之变更：如将some改为any.too和also改为either,and改为Or等：Therearesomebirdsinthetree.树上有些鸟。-*Therearentbirdsinthetree.树上没有鸟。Helikesthebook,too.他也喜爱这本书。-*Hedoesntlikethebook,.他也不喜爱这本书。Helikessinginganddancing.他喜爱唱歌和跳舞。-*Hedoesntlikesingingdancing.他不喜爱唱歌也不喜爱跳舞。补充练习:依据句后括号内的央求，填入句中所修的词,1. Iknowth

4、eanswer.（TR疑问句）knowtheanswer?2. Wecanseesomebirds.（一般疑问句）seebirds?3. Thereisacomputerinthehouse.（HRJK问句）acomputerinthehouse?4. Therearesomeflowersontheteachersdesk.（一锻最付句）anyflowersontheteachersdesk?5. Therearesomeapplesonthetree.（否定式）6.IthinkheisOld.（否定句）Thereapplesonthetree.thinkheold.7. Openthewi

5、ndow.（否定句）openthewindow.8. WecanspeakgoodEnglish.（变否定句）WespeakgoodEnglish.9. Thankyouforhelpingme.（同义句）Thankyoufor.10. Whoseisthisbook?（同义句）isthis?11. Thisisherbook.（同义句）Thisbook.12. Hersweaterisred.（对外线部分提问）ishersweater?13. MypencilsareinthePenCiI-box.（M线部分提问）yourpencils?14. Igetupa1.snieveryday.（对

6、划线部分Ie同）doyougetupeveryday?15. TherearejiftstudentsinmyCIaSS.（对划线部分提付）studentsarethereinyourclass?16. Thesearecars.（用buses改写成选择疑问句）Arethesecars?17. ThebookisinmySChOOlbag.（交JK问句）thebookinyourschool-bag?18. Twoboysareinourhouse.（改为therebe句觉）twoboysinourhouse.19. Canyoufindthekey?（作确定回答）,1.20. It,sMOndaytoday.（对划线部分类向）isittoday?