eg: ①I have a blue backpack.(变为一般疑问句) →Do you have a blue backpack? ②My brother does his homework before supper. (变为一般疑问句)
→Does your brother do his homework before supper?
by Xianjv Middle School WANG Qianqian
到目前为止，我们主要学习了三类动词： ① be动词：am is are ② 情态动词: can must ③ 实义动词: have, go, like , want, come, play… 下面我们分别来讲一下它们的用法。
③She wants to be a teacher.（变为否定句） →She doesn’t want to be a teacher. ④They like to play basketball.（变为否定句） →They don’t like to play basketball.
(3)一般疑问句：do/does放在句首，动 词第三人称单数形式变回原形。
Special remind 特别提醒
第一人称I，we在变疑问句时，应变 为第二人称you。
Practice 1
把下列动词变为第三人称单数形式 1. clean-2. go— 3. have-4. do-5. play-6. fly— 7. come-8. brush-9. watch— 10. study-11. ask-12. answer13. swim-14. catch-- 15. write— 16. eat-17. make-- 18. paint— 19. learn-20. run--
Practice 5
把下列句子变为疑问句，并做肯定回答。 1. My father rides a horse. 2. She does her homework at home 3. Miss Green likes dancing very much. 4. We clean the classroom. 5. My mother cooks the meals. 6. I clean the bedroom everyday. 7. They read books in the classroom. 8. The children sing in the music room.
eg: ① Your sister likes English best because it’s interesting. (对划线部分提问) →Why does your sister like English best? ② He does his homework before supper. (对划线 部分提问) →When does he do his homework?
一般疑问： Is Jenny in the classroom?
特殊疑问： Where is Jenny?
be动词用法歌
我(I)用am，你(you)用are， is连着他(he)，她(she)，它(it)； 其余单数用is，复数全部都用are。 变疑问，往前提，句末问号莫丢弃。 变否定，更容易， be后not莫忘记。 疑问否定任你变，句首大写莫迟疑。
Practice 4
把下列句子变为否定句： 1. She draws pictures every day. 2. We like playing football. 3 Linda swims every day. 4 They like playing games. 5. My father reads newspaper in the evening. 6. He likes drawing pictures .
Practice 3
选择题： 1. I to school every day. A. go B. goes C. going 2. He teeth every morning. A. brush B. brushes C. brushing 3. The birds singing. A. like B. likes C. like to 4. What does Lily doing? A. like B. likes C. to 5. you like eating apples? A. Do B. Does C. Doing
Practice 3
6. he swim every afternoon? A. Do B. Does C. Doing 7. Tom likes in the classroom. A. singing B. sing C. to singing 8. –Does Sally like swimming? --No, she . A. does B. doesn’t C. don’t 9. Peter and Mary milk every day. A. drink B. drinking C. drinks 10. they read English every day? A. Does B. To C. Do
eg: drink-drinks go-goes stay-stays make-makes look-looks have-has pass-passes carry-carries come-comes watch-watches
likeபைடு நூலகம் Mike _______(like) cooking. have They _______(have) the same hobby. looks My aunt _______(look) after her baby carefully.
③She wants to be a teacher. (变为一般疑问句) →Does she want to be a teacher? ④They like to play basketball. (变为一般疑问句) →Do they like to play basketball?
(4)特殊疑问句：特殊疑问词+一般疑问 句。
be 动词
be动词属于系动词, 在一般现在时态的 句子中主要表现为三种形式：am, is, are 后面往往接形容词，名词或介词短语 做表语。
eg： (1) I’m fine. (fine形容词做表语) (2) He is a boy. ( a boy名词做表语) (3) My pen is in the schoolbag. (in the schoolbag 介词短语做表语)
(2)否定句：动词前加don’t/doesn’t，动 词第三人称单数形式变回原形。
eg: ①I have a blue book.（变为否定句） →I don’t have a blue book. ②He has a brother. （变为否定句）
→He doesn’t have a brother.
实义动词
实义动词又称行为动词，实义动词所在 句子中不存在be动词。实义动词所在的 子变否定变疑问需要助动词do, does的 帮助。 eg: I like red. Helen comes to school. They play tennis ball.
（1）肯定句： “主谓一致”原则---当主语为 第三人称单数时，谓语动词要变成对应的第 三人称单数形式。 ※ 动词第三人称单数的变化规则 ①、直接在动词后：+s like- likes play-plays look-looks ②、以s, x, sh, ch, 接尾的动词：+es wash-washes teach-teaches ③、以o接尾的动词：+es go-goes do-does ④、以辅音字母+y接尾的动词：变y为i+es fly-flies study-studies ⑤、特殊词： have-has
Practice 2
用括号内动词的适当形式填空 1.He often ________(have) dinner at home. 2.We _______(not watch) TV on Monday. 3.Nick _______(not go) to the zoo on Sunday. 4.______ they ________(like) the World Cup? 5.What _______they often _______(do) on Saturdays? 6._______ your parents _______(read) newspapers every day?
(1)肯定句： be动词与主语保持一致 (2)变为否定句 ： be后加not (3)变为一般疑问句 ： be动词往前提 (4)变特殊疑问句 ：what, where, who ,how, when…进行提问
eg: Jenny is in the classroom.
否定： Jenny isn’t in the classroom.