1. 如果句中有be(am/is/are)动词，先找到be动词，然后在后面加not.
例如：He is playing on the grass.-----He is not(可缩写成isn’t) playing on the grass. 练习：1） There are some flowers in our school.(变否定句) ___________________________________.
2) I am an English teacher. ___________________________________. 2. 带should, can等情态动词的句子，直接在情态动词should, can后加not. 如： He should get up now.----He shouldn’t get up now. The boy can walk.---__________________________.
3. 祈使句（以动词原形开头的句子）变否定句时，一般在句首加Don’t. 如： Be late.---Don’t be late. Come here. ----Don’t come here. 练习： Stand there. ---________________
4. 在一般现在时含实意动词的句子里，要借助助动词do或者does来变否定句。如果主语是单三，借助does, 如果不是单三，借助do, 然后再加not.
例如：She watches TV every day.--- She does not (缩写doesn’t)watch TV every day. You have a big family. --- You do not(缩写don’t ) have a big family. 练习：He goes to school every day. ---_____________________________________ My parents go jogging every evening. ---______________________________ 将肯定句变成一般疑问句方法：
将be动词，助动词或情态动词提前，其他照抄就可以。 例如：He is playing the piano. --- Is he playing the piano?
Tom can do handstands. --- Can Tom do handstands? Lily tries many times. --- Does Lily try many times?
将句子变成特殊疑问句方法： 特殊疑问句=特殊疑问词+一般疑问句
对划线部分提问的题都是变特殊疑问句，要用特殊疑问词What, Where, What time, How, When, Who, How many等来提问。
What：用来提问物品，动作 Where：用来提问地点
What time用来提问时间点。 How：用来提问交通方式和身体状况。 When：用来提问时间 Who：用来提问人物。
How many, How much：用来提问数量。可数名词How many, 不可数名次How much. 例如：There is a glass of water on the table. ______ ______ water is there on the table. There are three people in his family. ______ ______ people are there in his family?
句型转换练习题：
1. It is a big tiger.
否定句____________________________ 一般疑问句
2. We are sitting under the tree.
否定句__________________________ 一般疑问句
3. Mike and David are my cousins.
否定句___________________________ 一般疑问句
4. There is some milk in the glass.
否定句___________________________ 一般疑问句
5. There are some buses in the street.
否定句____________________________ 一般疑问句
6. I am having lunch in the kitchen.
否定句____________________________ 一般疑问句
7. We are playing the guitar now.
否定句____________________________ 一般疑问句
8. I can play the piano.
否定句____________________________ 一般疑问句
9. She can make a nice cake.
否定句____________________________ 一般疑问句
10. They go to bed at 9:30.
否定句____________________________ 一般疑问句
11. I have a nice toy.
否定句____________________________ 一般疑问句
12. We like drawing.
否定句____________________________ 一般疑问句
13. He likes swimming.
否定句____________________________ 一般疑问句
14. Tom goes to school on Monday.
否定句____________________________ 一般疑问句
15. Sam does his homework every day.
否定句____________________________ 一般疑问句
16. My mum washes clothes every day.
否定句__________________________一般疑问句 17. Tom is singing. (划线部分提问) ______ _______ ______ _________ 18. Grandma is sitting on a chair. ______ _____ __________ __________ 19. It is 7:00. _______ _______ _______ _______
20. He goes to school by bus. _____ ______ ____ _____ ____ _______ 21. There are two pools in the sports center.（对划线部分提问） ________________________________________
22. I can play volleyball.（对划线部分提问） _________________________ 23. Liu Xiang is my favorite sports star.（对划线部分提问） ___________________________________________________ 24. He’s learning diving now.（对划线部分提问）
__________________________________________________
25. I need a baseball bat .（对划线部分提问）_________________________ 26. Linda is going to visit Beijing this holiday. （对划线部分提问） _____________________________________________________
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