1、,肯定句變否定句 陳述句變一般疑問句,1,1. be動詞的否定式 動詞be根據(jù)不同的人稱可以有am, is, are等不同形式，不管何種情況，構(gòu)成否定式時， 一律在其后加not，基本句型為： 主語+am/is/are+其他 主語+am/is/are+not +其他 例如： I am old, but you are young. 我老了，但你還年輕。 Im not old, but youre not young. 我還不老，但你不年輕了。 He is reading and I am writing. 他在讀，我在寫。 He is not reading and I am not writi

2、ng. 他沒有在讀，我沒有在寫。,否 定 句,也就是說，把肯定句變成否定句，就是在句子中的be動詞后面加not。,2,練習(xí)題：,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 the floor., I am not listening to music., Mike isnt a student., They arent in the zoo., There ar

3、ent any flowers., This isnt my sister., We arent sweeping the floor.,3,2. 情態(tài)動詞的否定式 情態(tài)動詞的否定式一般在其后加not構(gòu)成，基本句型為： 主語+情態(tài)動詞（can/may/must/will/should）+其他 主語+情態(tài)動詞（can/may/must/will/should）+not+其他 例如： I can finish the work in an hour. 我能在1小時內(nèi)完成這工作。 I cant finish the work in an hour. 我不能在1小時內(nèi)完成這工作。 You must g

4、o with us. 你必須同我們一起去。 You mustnt go with us. 你不能同我們一起去。 We should help them. 我們應(yīng)該幫助他們。 We shouldnt help them. 我們不必幫助他們。,也就是說，把肯定句變成否定句，就是在句子中的情態(tài)動詞后面加not。,4,3. 實(shí)意動詞的否定式 一般實(shí)意動詞的否定式，應(yīng)根據(jù)不同人稱在實(shí)意動詞之前加上do/does,然后再加not進(jìn)行否定（即加上dont或doesnt）?；揪湫蜑椋?主語（復(fù)數(shù)(I)）+動詞原形+其他 主語（復(fù)數(shù)(I)）+dont+動詞原形+其他 例如： I put a book on m

5、y head.我把書放到頭上。 I dont put a book on my head. 我沒把書放到頭上。 He works in a bank. 他在一家銀行工作。 He doesnt work in a bank. 他不是在銀行工作。,也就是說，把肯定句變成否定句，就是在句子中的實(shí)意動詞 前面加dont或doesnt。一二人稱復(fù)數(shù)人稱加dont；單三人稱加doesnt。, 主語（單數(shù)）+動詞單三形式+其他 主語（單數(shù)）+doesnt+動詞原形+其他,5,練習(xí)題：,1.They like making the puppet. 2.Amy and Sarah live in Beijing

6、. 3.They sing 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

7、 basketball on Sundays.,6,怎樣把肯定句變成否定句： 在句子中的be動詞后直接加not。 be動詞包括am is are。 在句子中的情態(tài)動詞后直接加not。 句子中的情態(tài)動詞包括can may must。 如果句子中沒有be動詞或情態(tài)動詞，就要 找句中的實(shí)義動詞。在實(shí)義動詞前加助動詞的否定形式。 主語是一二人稱及復(fù)數(shù)人稱時加dont;主語是第三人稱單數(shù) 形式加doesnt。加了doesnt后句子中原本的動詞三單形式 要還原。,7,注意： some，many 變 any 動詞三單還原問題。,8,1.什么是一般疑問句(Yes/No question)？,一般疑問句用于對某

8、一情況提出疑問， 通常可用yes或no來回答，讀時用升調(diào)。,2.怎樣把陳述句變成一般疑問句？,例： This is your penpal. 這是你的筆友。,Is this your penpal? 這是你的筆友嗎？, 把句子中的be動詞提前到句首。 be動詞包括am,is,are，即,主語+am/is/are+其他 Is/Am/Are+主語+其他,9,練習(xí)題：,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 sm

9、all bridge in the school. 6. There are many children the park.,Are you a student?,Is she a university student?,Is he a principle?,Are they good friends?,Is there a small bridge in the school?,Are there any children the park?,10,例： He can go with us. 他能跟我們一起去。,Can he go with us? 他能跟我們一起去嗎？,把句子中的情態(tài)動詞提

10、前到句首。 句子中的情態(tài)動詞包括can，may，must,will,should。 即,練習(xí)題：,She can play basketball. I may help you. He can sweep the floor. Robot can play chess.,主語+情態(tài)動詞（can/may/must/will/should）+其他 情態(tài)動詞（Can/May/Must/Will/Whould）主語+其他,11,例： You like singing. 你喜歡唱歌。,Do you like singing? 你喜歡唱歌嗎？,Jim likes collecting stamps. 吉姆

11、喜歡集郵。, Does Jim like collecting stamps? 吉姆喜歡集郵嗎？,如果句子中沒有be動詞或情態(tài)動詞，就要 在句首加助動詞幫助其變成一般疑問句。主語是 一二人稱及復(fù)數(shù)人稱時加Do;主語是第三人稱單數(shù) 形式加Does。加了Does后句子中原本的動詞三單形式 要還,即, 主語（復(fù)數(shù)(I)）+動詞原形+其他 Do+主語（復(fù)數(shù)）+動詞原形+其他, 主語（單數(shù)）+動詞單三形式+其他 Does+主語（單數(shù)）+動詞原形+其他,12,練習(xí)題：,1.You have a friend. 2. He goes to school by bus. 3. She likes apples

12、. 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?,13,怎樣把陳述句變成一般疑問句： 把句子中的be動詞提前到句首。 Be動詞包括am is are。 把句子中的情態(tài)動詞提前到句首。 句子中的情態(tài)動詞包括can may must。 如果句子中沒有be

13、動詞或情態(tài)動詞，就要 在句首加助動詞幫助其變成一般疑問句。主語是 一二人稱及復(fù)數(shù)人稱時加Do;主語是第三人稱單數(shù) 形式加Does。加了Does后句子中原本的動詞三單形式 要還原。,14,注意： 據(jù)點(diǎn)變問號。 句中的第一人稱變成相應(yīng)的第二人稱。 some,many 變 any 動詞三單還原問題。,15,綜合訓(xùn)練（一） 陳述句變一般疑問句練習(xí) 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

14、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 November. 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 w

15、ant 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,16,綜合訓(xùn)練（二） 將下列句子改成一般疑問句： 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.

16、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.,17,總結(jié),主語+am/is/are+其他 主語+am/is/are+not +其他 Am/Is/Are+主語+其他 主語+情態(tài)動詞