动词第三人称单数形式讲解
一、什么是第三人称单数？
人称可分为三类：第一人称、第二人称和第三人称 第一人称： I we 第二人称： you
第三人称： he、she、it、they和人名类（如：Peter、Jane、my father等） 结合以上知识，第三人称单数就是he、she、it和单个的某人，也包括单个的动物、东西等。
二、动词为什么要变成相应的三单形式？
在一般现在时中，跟在第三人称单数后面的动词也要变成相应的三单形式，例如：
I watch TV every day. 如果主语是三单，动词要变化： He watches TV every day. She watches TV every day.
Jane watches TV every day. 三、动词三单的变化规则
1、一般情况下直接加s，如speak-speaks, like-likes, play-plays
2、以s, x, sh, ch, o 结尾的加es，如 wash-washes, go-goes, do-does, watch-watches
3、以辅音字母+y 结尾的，改y 为i 再加es，如 study-studies，try-tries 4、特殊变化，如 have-has
四、does和doesn’t 在句子中的用法
否定句：主语+don’t/doesn’t+动词原形+（其他）。如： I don’t watch TV. 我不看电视。
当主语为第三人称单数时，要用doesn’t 构成否定句。如： He doesn’t watch TV. 他不看电视。
注意doesn’t后面用动词原形watch，而不是watches 一般疑问句：Do / Does+主语+动词原形+（其他）。如： Do you watch TV? Yes, I do. / No, I don’t.
当主语为第三人称单数时，要用does 构成一般疑问句。如： Does she watch TV? Yes, she does. / No, she doesn’t. 特殊疑问句：疑问词+一般疑问句。如： How do you go to school? By bike. How does Jane go to school? By bus. 五、动词第三人称单数形式的练习 A、写出下列动词的第三人称单数。
drink ________ go _______ stay ________ make ________ have_______ pass_______ carry come________ plant_______ fly ________ study_______ brush________ look _________ teach_______ watch______ B、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._______ your parents _______(read) newspapers every day? 6.The girl _______(teach) us English on Sundays. 7.She and I ________(take) a walk together every evening. 8.Mike _______(like) cooking. 9.They _______(have) the same hobby.
10.My aunt _______(look) after her baby carefully. 11.You always _______(do) your homework well. 12.She _______(go) to school from Monday to Friday. 13.Liu Tao _______(do) not like PE.
14.The child often _______(watch) TV in the evening. 15.Su Hai and Su Yang _______(have) eight lessons this term.
16. Mike’s sister ________ (cook) nice food. I _______ (like) eating it very much.
17._______ (do) your father_______ (watch) TV in the evening? No, he_______ (not).
18.Tom usually_______ (play) football after school 19. He _______ (live) in a small town near Nanjing.
20.I ______ (go ) to school by bus, and he ______(go) to school by bike. C、选出正确的答案：
1. She (like / likes) to play football. 2. He (like / likes) drinking milk. 3. I (like / likes) to watch TV. 4. We (like / likes) to play badminton.
5. They (like / likes) to sing songs. 6. She (read / reads) books every day. 7. He (play / plays) computer games every day. 8. It (listen / listens) to the radio every day. 9. Linda (draw / draws) pictures every day. 10. Jane and Linda (play / plays) football every day. D、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 . __________________________________ __________________________ E、把下列句子变为疑问句，并做肯定回答。
1. My father can ride 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.