英语中第三人称单数在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es但有些同学们对于哪些主语是第三人称单数还不十分清楚，现归纳总结如下： 一、人称代词he, she, it是第三人称单数如： He likes watching TV. 他喜欢看电视 She has lunch at twelve. 她十二点吃午餐 It looks like a cat. 它看起来像只猫 二、单个人名、地名或称呼作主语；是第三人称单数如： ①Han Mei looks like her mother. 韩梅看起来像她的母亲 ②Beijing is in China. 北京在中国 ③Uncle Wang often makes cakes. 王叔叔经常做蛋糕 三、单数可数名词或"this / that / the+单数可数名词"作主语时，是第三人称单数如： ①A horse is a useful animal. 马是有用的动物 ②This book is yours. 这本书是你的 ③That car is red. 那辆小汽车是红色的 ④The cat is Lucy's. 这只猫是露茜的。
四、不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数如： ①Everyone is here. 大家到齐了 ②There is something wrong with the watch. 这块手表有毛病 ③This is a pen. 这是一支钢笔 ④That is an eraser. 那是一块橡皮擦 五、不可数名词作主语时为第三人称单数如： ①The milk is in the glass. 牛奶在玻璃杯里 ②The bread is very small. 那面包很小 六、当数字或字母作主语时，看作第三人称单数如： ①"6" is a lucky number. "6"是个吉利数字 ②"I" is a letter. "I"是个字母 巩固练习题： I.写出下列动词的相应形式： 1. 第三人称单数： wash_________ match _______guess______ study______ finish_________ go________ snow______ carry_________ 2.写出下列动词的过去式：stop______ see________ drive ________let_______ carry______ keep_____ join______ find_______ think________ teach______ catch______ 3. 写出下列动词的现在分词形式： stay_______ begin______ forget_______ forget______ lie________ die _______ run_______ prefer______ give________ ring_______ dance______ hope_______ II. 用所给动词的适当形式填空： 1．I ________(write) to you as soon as I _______(get) to London. 2. He doesn’t feel well and ____________(not eat) any food this morning. 3. He ______ not _______(see) me come in, for he ___________(read) something with great interest. 4. I _________(let) you have the book as soon as I _________(finish) it. 5. While we ________(wait) for our teacher, a little boy ________(run) up to us. 6. Don’t make a noise. Grandpa __________(sleep). 7.It’s seven now, Tom’s family__________(watch) TV. 8. It ________(take) me two hours to finish my homework last night. 9. What ______ your mother _______(do) at eight yesterday evening? She _______(wash) clothes. 10. _______ it ______ (rain) when school was over yesterday? 11. What _______(do) _______ tomorrow? We ________ (play) football. 12. There ________ (be) a football match on TV this evening. 13. They said they ________ (visit) the Great Wall the next summer holiday. 14. Who _______ (dance) the best in your class? 15. Will you come if he _____________ (not come)? 16. The teacher told us the earth __________ (move) round the sun. 17. They _______ (have) a party in the garden if it ________ (not rain) tomorrow. 18 She ________ (buy) a sweater yesterday. 19. I don’t know if Mr. Wang ______ (go) to Shanghai tomorrow. If he _____ (go), I ______ (ask) him _______ (take) some books to my daughter, because she _______ (study) there. III单项选择： 1.The students will go to the Summer Palace if it _____ tomorrow. A. don’t rain B. doesn’t rain C. won’t rain 2. There _____ an English film next week. A. will have B. is going to have C. is going to be D. was going to be 3. The picture _______ nice. A. looks B. is looked C. look D. is looking 4. She ______ down and soon fell asleep. A. live B. lain C. laid D. lay 5. They _____ the office at nine yesterday morning. A. reached to B. arrived C. went D. get to 6. We shall go to Shanghai on business before you _____ back next week. A. will come B. came C. would come D. come 7. Don’t smoke until the plane ______ off. A. takes B. took C. was taken D. is take 8. I saw her ____ the room this morning. A. to enter() B. entered C. enter D. enters 9.the teacher asked us ______ to school on time. A. to come B. coming C. come D. comes 10. John is always ______ others. A. help B. helping C. helps D. to help 11. He told us ______ at eight. A. working B. to work C. work D. worked 12. You’d better ______ at home and ______ your homework. A. to stay, do B. stay, do C. to stay, to do D. stay, to do 13. He sat down ______ a rest. A. having B. have C. to have D. had 14. Uncle Wang knows _______ a washing machine. A. how to make B. to make C. how making D. what to make 15. Jim decided _______ Polly to Ling feng when he was back to England. A. to leave B. left C. leaving D. leave。