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?
含有be动词反问句：
He is a teacher.---- He is a teacher,isn’t he?（反意疑问句）
She isn’t a teacher.---- She isn’t a teacher,is she?（反意疑问句）
They are teachers.---- Aren’t they teachers?
He is going to school.---- Isn’t he going to school?
含有实意动词的反问句：
She teaches English.---- She teaches English,doesn’t she?（反意疑问句）
He doesn’t like music.---- He doesn’t like music,does he?（反意疑问句）
He teaches English.---- Doesn’t he teach English?
You like music.---- Don’t you like music?
含有情态动词的反问句：
You can speak English.----You can speak English,can’t you?（反意疑问句）
He can’t speak English.---- He can’t speak English,can he?（反意疑问句）
You can speak English.---- Can’t you speak English?
