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 aren’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)
