小学英语语法：“第三人称单数” 第三人称有“他、她、它以及一些单数名词” 。
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。
一、动词第三人称单数的变化规则及发音规律动词原形变第三人称单数的规则与发音规律同名词单数变复数大致相同，请认真观察。
1、大多数动词在词尾加“ S”如：stop－stops [s] ; make－makes [s] read －reads [z] ; play －plays [z]2、以辅音字母加“ y”结尾的，要先将“ y”变为“ i”，然后在加“ es”读[iz]如：fly －flies [z]；carry －carries [z] study －studies [z]; worry －worries3、以“ s, x, ch, sh”结尾的，在词尾加“ es”，发音为[iz] 如：teach－teaches[iz]; watch －watches [iz]4、以“ o”结尾的动词，加“ es”，如：go－goes [z] do－does [z] 注：下面几个动词变为单数时，原词的元音部分的发音发生了较大的变化，请注意记忆。
如：do [du:] －does [dz] say [sei]－says [sez]以不发音字母“ e”结尾的开音节词，如果尾音是[s] ，[z] 时，加“ s”后字母“ e” 发音，与所加“ s”一起读做[iz]。
如：close－closes [iz]一、第三人称代词he, she, it 做主语时。
例如：She is very good at English. 她英语学得好。
He studies in a middle school. 他在一所中学学习。
He likes watching TV. 他喜欢看电视。
She has lunch at twelve. 她十二点吃午餐。
He can play football. 他会踢足球。
He usually gets up at 6:oo. 他通常 6 点起床。
It looks like a cat. 它看起来像只猫。
二、单独使用的人名、地名或称呼语做主语时。
例如:Jim often plays football with his friends.吉姆经常和他的朋友们踢足球。
Does Uncle Wang like making things? 王叔叔喜欢做东西吗？Han Mei looks like her mother. 韩梅看起来像她的母亲。
Beijing is in China. 北京在中国。
Uncle Wang often makes cakes.王叔叔经常做蛋糕。
三、不可数名词做主语时。
例如：Is there any juice in the bottle? 瓶里有果汁吗?The milk is in the glass. 牛奶在玻璃杯里。
The bread is very small. 那面包很小。
四、单数可数名词做主语时。
例如：The box is in your room. 箱子在你的房间里。
What is that girl doing over there? 那女孩在那边干什么？A horse is a useful animal. 马是有用的动物。
That car is red. 那辆小汽车是红色的。
The cat is Lucy's. 这只猫是露茜的。
五、单个数字、算式或单个字母做主语时。
例如：Three plus nine is twelve. 三加九等于十二。
"I" is an English letter. "I" 是个英语字母。
"6" is a lucky number. "6" 是个吉利数字。
六、指示代词 this, that 等做主语时。
例如：This is her red pen. 这是她的红钢笔。
That is an eraser.那 是一块橡皮擦。
七、代词 one 做主语时。
例如：One of them is watching TV. 他们中的一个人正在看电视。
八、不定代词 something, anything, nothing, someone, somebody, nobody, everything 等 做主语时。
例如：There's something wrong with the computer. 这台电脑坏了。
Everyone is here. 大家到齐了。
九、请看下面两组句子，注意区分他们的共同点和不同点。
I don't go to school every day. He doesn't go to school every day.Do you go to school every day?Yes, he does. (No, he doesn't) Does he go to school every day?注： 1)第三人称单数用了 does 后面就不用动词的 s 形式了,而用动词原形 .2)变为疑问句 ,要在句首加 "do" does ; 变为否定句 , 要在动词前面加 "do not ,does not", 可以简写为 "don't", doesn 't.I go to school every day. Hegoes to school every day. Yes, I do. (No, I don't)2012小学第三人称单数练习题Do 还是 Does 我来选 。
1. [Do/Does] ____ he watch TV at night? Yes he does.2. [Do/Does] ____ you go to school everyday? No, I don ' t.3. [Do/Does] ____ Jack and Peter like apples?4. [Do/Does] ____ Tina go swimming on Sunday?5. [Do/Does] ____ they play football? Yes, they ___[do/does].6. [Do/Does] _____ we have a good teacher? Yes, we _____ [do/does].7. [Do/Does] ___ they jump rope ? No, they ___[do not/does not].8. [Do/Does] ___ your dog walk in the zoo?9. [Do/Does] ___ I have a big nose? No, you ___ [do not/does not].10 . [Do/Does] ___ your cats eat fish? Yes, they ___ .[do/does].11 . [Do/Does] ___ their mothers go shopping? No, they ___ _[do not/does not].12 . I ___[do not/ does not] speak Japanese. [Do/Does]_______________________________________________ _you speak Japanese? 二 ．请用 have 或 has 填空。
1． I ________ a nice picture. 2． He ______ _ a good friend.3． They ____ ___ some kites.4．We ______ _ some flowers.5． She _____ ___ a duck. 6． My father __ _______ a new bike.7． Her mother ________ a vase.8． Our teacher ________ an English book. 9． Our teachers ________ a basketball.10． Their parents _________ some story books. 11 ． Nancy ___ ___ many skirts.12 ． David ___ some jackets.13 ． My friends _______ a football.14 ． What do you ______ ?15 ． What doesM ike _______ ? 三． ．请用动词的适当形式填空。
1. Let him ___ (play)basketball.2. Everyone___ __(know)what he really like.3. Those girls__ __(be)my sister.4. That girl ___ _(call)me every Sunday.5. How___(do)she ____ (spell)the word?6. He _______ TV every evening. (watch)7. We always __ _____ to school on foot. (go) 8. Tom, with his classmates, often _____ football after school. (play)9. Your shoes ______ under the bed. (be)10. ____ here and _____ by me. (come, stand)11. His uncle usually _______ to work by bus. (go)12. I always ____ up at six in the morning. (get)13. John _______ like his father. (look)四．否定句 :在动词前 +doesn't 或 don't.1. She ___ ____ (do) her homework every day.2. He ____ ____ (live) in ShangHai.3. He ____ ____ (need) a pair pf shoes.4. Danny ____ _____ (see) the apple tree?5. She ___ ____ (come) from America.6. The girl ___ _____ (look) out of the window and sees many birds in the sky. 五．请用动词的适当形式填空。