陈述句变一般疑问句-肯定句变否定句

1、,肯定句变否定句 陈述句变一般疑问句,1. be动词的否定式 动词be根据不同的人称可以有am, is, are等不同形式，不管何种情况，构成否定式时， 一律在其后加not，基本句型为： 主语+am/is/are+其他 主语+am/is/are+not +其他 例如： I am old, but you are young. 我老了，但你还年轻。 Im not old, but youre not young. 我还不老，但你不年轻了。 He is reading and I am writing. 他在读，我在写。 He is not reading and I am not writing. 他没有在读，我没有在写。,否 定 句,也就是说，把肯定句变成否定句，就是在句子中的be动词后面加not。,练习题：,1. I am listening to music. 2. Mike is a student. 3. They are in the zoo. 4.There are some flowers. 5. This is my sister. 6.We are sweeping

2、the floor., I am not listening to music., Mike isnt a student., They arent in the zoo., There arent any flowers., This isnt my sister., We arent sweeping the floor.,2. 情态动词的否定式 情态动词的否定式一般在其后加not构成，基本句型为： 主语+情态动词（can/may/must/will/should）+其他 主语+情态动词（can/may/must/will/should）+not+其他 例如： I can finish the work in an hour. 我能在1小时内完成这工作。 I cant finish the work in an hour. 我不能在1小时内完成这工作。 You must go with us. 你必须同我们一起去。 You mustnt go with us. 你不能同我们一起去。 We should help them. 我们应该帮助他们。 We shouldnt help th

3、em. 我们不必帮助他们。,也就是说，把肯定句变成否定句，就是在句子中的情态动词后面加not。,3. 实意动词的否定式 一般实意动词的否定式，应根据不同人称在实意动词之前加上do/does,然后再加not进行否定（即加上dont或doesnt）。基本句型为： 主语（复数(I)）+动词原形+其他 主语（复数(I)）+dont+动词原形+其他 例如： I put a book on my head.我把书放到头上。 I dont put a book on my head. 我没把书放到头上。 He works in a bank. 他在一家银行工作。 He doesnt work in a bank. 他不是在银行工作。,也就是说，把肯定句变成否定句，就是在句子中的实意动词 前面加dont或doesnt。一二人称复数人称加dont；单三人称加doesnt。, 主语（单数）+动词单三形式+其他 主语（单数）+doesnt+动词原形+其他,练习题：,1.They like making the puppet. 2.Amy and Sarah live in Beijing. 3.They s

4、ing a song together. 4.We play basketball on Sundays. 5.Mike likes listening to music. 6.We need some masks., They dont sing a song together., We dont need any masks., Mike doesnt like listening to music., They dont like making the puppet., Amy and Sarah dont live in Beijing., We dont play basketball on Sundays.,怎样把肯定句变成否定句： 在句子中的be动词后直接加not。 be动词包括am is are。 在句子中的情态动词后直接加not。 句子中的情态动词包括can may must。 如果句子中没有be动词或情态动词，就要 找句中的实义动词。在实义动词前加助动词的否定形式。 主语是一二人称及复数人称时加dont;主语是第三人称单数 形式加doesnt。加了doesnt后句子

5、中原本的动词三单形式 要还原。,注意： some，many 变 any 动词三单还原问题。,1.什么是一般疑问句(Yes/No question)？,一般疑问句用于对某一情况提出疑问， 通常可用yes或no来回答，读时用升调。,2.怎样把陈述句变成一般疑问句？,例： This is your penpal. 这是你的笔友。,Is this your penpal? 这是你的笔友吗？, 把句子中的be动词提前到句首。 be动词包括am,is,are，即,主语+am/is/are+其他 Is/Am/Are+主语+其他,练习题：,1.You are a student. 2. She is a university student. 3. He is a principle. 4. They are good friends. 5. There is a small bridge in the school. 6. There are many children the park.,Are you a student?,Is she a university student?,Is he a

6、 principle?,Are they good friends?,Is there a small bridge in the school?,Are there any children the park?,例： He can go with us. 他能跟我们一起去。,Can he go with us? 他能跟我们一起去吗？,把句子中的情态动词提前到句首。 句子中的情态动词包括can，may，must,will,should。 即,练习题：,She can play basketball. I may help you. He can sweep the floor. Robot can play chess.,主语+情态动词（can/may/must/will/should）+其他 情态动词（Can/May/Must/Will/Whould）主语+其他,例： You like singing. 你喜欢唱歌。,Do you like singing? 你喜欢唱歌吗？,Jim likes collecting stamps. 吉姆喜欢集邮。, Does Jim like col

7、lecting stamps? 吉姆喜欢集邮吗？,如果句子中没有be动词或情态动词，就要 在句首加助动词帮助其变成一般疑问句。主语是 一二人称及复数人称时加Do;主语是第三人称单数 形式加Does。加了Does后句子中原本的动词三单形式 要还,即, 主语（复数(I)）+动词原形+其他 Do+主语（复数）+动词原形+其他, 主语（单数）+动词单三形式+其他 Does+主语（单数）+动词原形+其他,练习题：,1.You have a friend. 2. He goes to school by bus. 3. She likes apples. 4. They live in the country. 5. My friend lives in Shanghai.,Do you have a friend?,Does he go to school by bus?,Does she like apples?,Do they live in the country?,Does your friend live in Shanghai?,怎样把陈述句变成一般疑问句： 把句子中的be动词提前到

8、句首。 Be动词包括am is are。 把句子中的情态动词提前到句首。 句子中的情态动词包括can may must。 如果句子中没有be动词或情态动词，就要 在句首加助动词帮助其变成一般疑问句。主语是 一二人称及复数人称时加Do;主语是第三人称单数 形式加Does。加了Does后句子中原本的动词三单形式 要还原。,注意： 据点变问号。 句中的第一人称变成相应的第二人称。 some,many 变 any 动词三单还原问题。,综合训练（一） 陈述句变一般疑问句练习 1. His father is an English teacher. 2. These cats are crying. 3. They can swim. 4. I like to read English. 5. I go to school on foot. 6. He likes English. 7. His father goes to work by bus. 8. He is crying under the tree. 9. His birthday is on the twentieth of Nov

9、ember. 10. Mrs. Li and Kitty are in a big shop. 11. Kitty is wearing her new uniform. 12. The boy under the tree is hungry. 13. He goes to school every day. 14. I want to have a model car. 15. She wants a cup of coffee. 16. Mrs. Li and Kitty watch television at night. 17. I do my homework after school,综合训练（二） 将下列句子改成一般疑问句： 1. It is a lovely dog. 2. She is lovely girl. 3.You are a singer. 4. They are Lilys cousins. 5. We are classmates. 6. I am a doctor. 7. There is a bird in the tree. 8. There are many stars in the sky. 10.I love my parents. 11.I play computer games every night. 14.We have a pleasant home. 15.We like to climb the mountain. 16.They go to church on Sunday. 17.They walk to school every morning. 18.It is a beautiful park.,总结,主语+am/is/are+其他 主语+am/is/are+not +其他 Am/Is/Are+主语+其他 主语+情态动词（can/may/must/will/should）+其他

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