be动词-情态动词及助动词用法_外语学习-语法 .pdf

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:He a student.肯定句：We are from China.一般疑问句:from China?否定句：We from China 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:She can swim.一般疑问句:she swim?否定句:She swim.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/doesn t,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:They football after school.肯定句：Tom watches TV every day.一般疑问句:Tom TV every day?否定句:Tom TV 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 aren t _ birds in the tree.树上没有鸟。He likes the book,too.他也喜欢这本书。He doesnt like the book,_.他也不喜欢这本书。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 flowers on the teachers desk.(一般疑问句)_ _ any flowers on the teachers desk?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.时把提到句子的前面句尾用问号即可变否定句时直接在后面加即可例如肯定句一般疑问句否定句肯定句一般疑问句否定句由情态动词等构成的句子变一般疑问句时把提到句子的前面句尾用问号即可变否定句时直接在后面加即可例如后面加谓语用动词原形例如肯定句一般疑问句否定句肯定句一般疑问句否定句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改为和改为改为等树上有些鸟号内的要求填入句中所缺的词一般疑问句一般疑问句一般疑问句一般疑问句否定式否定句精品资料欢迎下载否定句变否定句同义句同义句同义句对划线部分提问对划线部分提问对划线部分提问对划线部分提问用改写成选择疑问句变精品资料 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 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)_ _ two boys in our house.19.Can you find the key?(作肯定回答)_,I_.20.It s Monday today.(对划线部分提问)_ _ is it today?时把提到句子的前面句尾用问号即可变否定句时直接在后面加即可例如肯定句一般疑问句否定句肯定句一般疑问句否定句由情态动词等构成的句子变一般疑问句时把提到句子的前面句尾用问号即可变否定句时直接在后面加即可例如后面加谓语用动词原形例如肯定句一般疑问句否定句肯定句一般疑问句否定句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改为和改为改为等树上有些鸟号内的要求填入句中所缺的词一般疑问句一般疑问句一般疑问句一般疑问句否定式否定句精品资料欢迎下载否定句变否定句同义句同义句同义句对划线部分提问对划线部分提问对划线部分提问对划线部分提问用改写成选择疑问句变