be动词-情态动词及助动词用法范本

七年级英语双休日作业班级姓名:等级英语句型变化总结练习、含有动词构成的句子1be am,is,are变一般疑问句时把提到句子的前面，句尾用问号即可am,is,are变否定句时直接在a m,i s,are后面加not即可例如肯定句H ei sa student.一般疑问句ast udent否定句:AHe as t udento肯定句:We a re fr o mCh i n a一般疑问句:from China o否定句:Wefrom China2o由情态动词ca nm a y sh ould等构成的句子z z变一般疑问句时把提到句子的前面，句尾用问号即可.can,may,变否定句时直接在c a n,m a y,后面加not即可,例如肯定句She cAan swim.一般疑问句she swim否定句She swim3a.由行为动词构成的句子需要加助词d o或d oeSo变一般疑问句时把放在句子前面d o/doe s谓语用动词原形.例如:肯定句They playfootball afte r s choo1■般疑问句:A变否定句时在主语后面加dont/doesnt,1ayfo ot b all aft e rs chool否定句They f o otballafter scho ol tchesT肯定句T om wao AVev e ry day.一般疑问句Tom TVe very day否定句Tom TVe very day注意: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改为和改为改为等:some any,to oalso eith er,and or树上有些鸟Th er eare someb i rd sin the tree0树上没有鸟.—There arentb ir dsi n the tre e.他也喜欢这本书He likesthe boo k,too..他也不喜欢这本书f He doesnt liketh ebook,他喜欢唱歌和跳舞He likessinging andd ancingo他不喜欢-*Hedo esnt like singing dancing唱歌也不喜欢跳舞补充练习:根据句后括号内的要求，填入句中所缺的词（一般疑问句）1o Ik nowt he ans w e roknowtheanswer2We cansee somebirA o.（一般疑问句）dssee bird s（一般疑问句）3o Thereis a co mputerin thehou se.a co mpu terin thehouse，■（一般疑问句）4o Thereare someflowe rs0n theteache rs deska nyflowerson theteache rsdesk（否定式）5o The reare some app1eson the tree.There app1es onthetree6I thinkoA o（否定句）he isoldo Ithink he old7A.Op enthe（否定句）w indowo opent hewindow.8A.We can spe（变否定句）a kgood English.We speak goodEngl i s ho（同义句）9o Thank you forhelpin gme.Thankyoufor（同义句）

10.Whos ei st hisbook isthis.（同义句）llo This isher boo kThis book（对划线部分提问）

12.H er swea ter isredo isA Ahersweat er（对划线部分提问）13o Mypenc iI sare int hepenci1-b oxy our pencil sA（对划线部分提问）14o Ig etup atsix every dayodo you getup everyday1A5oThere are.（对划线部分提问）f ift ys tudentsin myc1as sstuA（用改写成选择疑dents arethere in your class1A

6.These arecarsobuses问句）Are theseca rs）.（变疑问句17o Thebook is inm yschoo1bag thebookinyourscAhool-bag^

18.Two boysarein our house（改为句型）the rebe Atwo boysin ourhous e.19A oCanyoufin dthe key（作肯定回答）,

120.11rsMon day today•（对划线部分提问）isit to day。