在一般现在时中，当主语是称时，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第三人称单数动词变化规则。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 doean’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 _________(l;et) 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 niose。 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。 wil 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。
