be动词-情态动词及助动词用法VIP

1、精品资料欢迎下载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1 、含有 be 动词 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 :He is a student.一般疑问句:a student?否定句 : Hea student.肯定句：We are from China.一般疑问句:from China?否定句：Wefrom China2.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

2、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 : She can swim.一般疑问句:she swim?否定句 : Sheswim.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 .变否定句时在主语后面加don t/ doesnt,谓语用动词原形。例如:肯定句 : They play football after school.一般疑问句:play football after school?否定句 : Theyfootball after school.肯定句：Tom watches TV e

3、very day.一般疑问句:TomTV every day?否定句 : TomTV every day.精品资料欢迎下载注意：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 some 改为 any ， too 和 also 改为 either ， and 改为 or 等：There are some birds in the tree.树上有些鸟。There arent_birds in the tree.树上没有鸟。He likes the book, too.他也喜欢这本书。He doesnt like thebook,_. 他也不喜欢

4、这本书。He likes singing and dancing.他喜欢唱歌和跳舞。He doe snt like singing_dancing.他不喜欢唱歌也不喜欢跳舞。补充练习：根据句后括号内的要求，填入句中所缺的词：1.I know the answer. (一般疑问句 )_ _ know the answer?2.We can see some birds. (一般疑问句 )_ _ see _ birds?3.There is a computer in the house. (一般疑问句 )_ _ a computer in the house?4.There are some f

5、lowers on the teachersdesk. ( 一般疑问句 )_ _ anyflowers on the teachersdesk?5.There are some apples on the tree. (否定式 )There _ _ _ apples on the tree.6. I think he is old. (否定句 )I _ think he _ old.精品资料欢迎下载7. Open the window. (否定句 )_ open the window.8. We can speak good English. (变否定句 )We _ _ speak good

6、English.9. Thank you for helping me. (同义句 )Thank you for _ _ .10.Whose is this book? (同义句 )_ _ is this?11.This is her book. (同义句 )This book_ _ .12.Her sweater is red. (对划线部分提问 )_ _ is her sweater?13.My pencils are in the pencil-box. (对划线部分提问 )_ _ your pencils?14.I get up at six every day. (对划线部分提问 )_ _ do you get up every day?15.There are fifty students in my class. (对划线部分提问 )_ _ students are there in your class?16.These are cars. (用 buses改写成选择疑问句 )Are these cars _ _ ?17.The book is in my schoolbag. (变疑问句 )_ the book in your school-bag?18.Two boys are in our house. (改为 there be句型 )_ _