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 :He is a student.一般疑问句 : Is he a student?否定句 : He is not a student.反问句 : He is a student, isn't he?He isn't a student, is he?画线提问 : 对 he 提问 : Who is a student?对 a student 提问 : What is he? or What does he do?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 : Can she swim?否定句 : She can not swim.反问句 : She can swim, can't she?She can not swim, can she?画线提问 : 对 she 提问 : Who can swim?对 swim 提问 : What can she do?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 . 例如 :肯定句 : They play football after school.一般疑问句 : Do they play football after school?否定句 : They don't (do not play football after school.反问句 : They play football after school, don't they?They don't play football after school, do they?画线提问 : 对 they 提问 : Who play football after school?对 play football提问 : What do they do after school?对 after school提问 : When do they play football?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 :He is a student.一般疑问句 : Is he a student?否定句 : He is not a student.反问句 : He is a student, isn't he?He isn't a student, is he?画线提问 : 对 he 提问 : Who is a student?对 a student 提问 : What is he? or What does he do?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 : Can she swim?否定句 : She can not swim.反问句 : She can swim, can't she?She can not swim, can she?画线提问 : 对 she 提问 : Who can swim?对 swim 提问 : What can she do?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 . 例如 :肯定句 : They play football after school.一般疑问句 : Do they play football after school?否定句 : They don't (do not play football after school.反问句 : They play football after school, don't they?They don't play football after school, do they?画线提问 : 对 they 提问 : Who play football after school? 对 play football提问 : What do they do after school? 对 after school提问 : When do they play football?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 my house.(一般疑问句______ ______ a computer in house?4.There are some flowers on the teachers’desk.(一般疑问句 ______ ______ ______ 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 very old.(否定句I ______ think he ______ very old.7.Please colour it green.(否定句______ ______ colour it green.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.There ar en’t any pears in thebox.(同义句There are ______ pears in the box.11.Whose are these clothes?(同义句______ ______ are these?12.Let me look at your book.(同义句Let me ______ ______ ______ ______ your book.13.Her sweater is red.(对划线部分提问______ ______ is her sweater?14.My pencils are in the pencil-box.(对划线部分提问 ______ ______ your pencils?15.I get up at six every day.(对划线部分提问______ ______ do you get up every day?16.There are fifty students in my class.(对划线部分提问 ______ ______ students are there in your class? 17.These are cars.(用 buses 改写成选择疑问句Are these cars______ ______ ?18.The book is in my schoolbag.(变否定疑问句______ the book in your school-bag?19.Two boys are in our house.(改为 there be句型 ______ ______ two boys in our house.20.Can’t you find the map?(作肯定回答______ ,I______ .参考答案： 1.Do you 2.Can you,any 3.Is there,your 4.Are there any 5.are not any 6.don’t,is 7.Please don’t 8.can not 9.your help 10.no 11.Whose clothes 12.have a look at13.What colour 14.Where are 15.What time 16.How many 17.or buses 18.Is n’t 19.There are 20.Yes,can 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： There are some birds in the tree. 树上有些鸟。
→There aren’t any birds in the tree. 树上没有鸟。
He likes the girl, too. 他也喜欢这个女孩。
→He doesn’t like the girl, either. 他也不喜欢这个女孩。
We have already seen the film. 我们已看过这部电影。
→We have not seen the film yet. 我们没有看这部电影。
He likes singing and dancing. 他喜欢唱歌和跳舞。
→He doesn’t like singing or dancing. 他不喜欢唱歌也不喜欢跳舞。
二、不变谓语动词而变其他词语有时将肯定句变为否定句时，不改变谓语而改变其他词语： Both of us went there. 我们两人都去了那儿。
→Neither of us went there. 我们两人都没去那儿。
Both Jim and Mary can sing this song. 吉姆和玛丽都会唱这首歌。