第三人称单数是英语中的一种语法，也称“三单”或“单三”，用于一般现在时的句子，当动词在第三人称单数后时【she、he 、it、不可数名词和人名（一个人的）】，要根据其情况变化。

首先，咱们要搞清楚第一、第二、第三人称各是什么。第一人称就是“我”和“我们”。第二人称是“你”和“你们”。第三人称单数是“他”、“她”和“它”，复数则是“他们”。

1、大多数实义动词在词尾加“s”在清辅音后发音为/ s / ；在浊辅音及元音因素后发音为 / z /。 如speak→speaks /s/ ; come→comes /z/ ; play→plays /z/ 。

2、以辅音字母加“y”结尾的动词，要先将“y”变为“i”然后再加“es”读/z/。 如study→studies /z/ ; fly→flies /z/

3、以“s、x、ch、sh”结尾的动词在词尾加“es”发音为/ iz / 。 如teach→teaches /iz/ ; watch→watches /iz/

4、以“o”结尾的动词,在词尾加“es”。 常出现的两个以“o”结尾的动词go和do后加“es”读/z/ 。 如go→goes /z/ ; do→does /z/

5、记住最为特别的be的三单is ，have的三单是has。

[注意]a、下面两个动词变三单时，原词的元音部分的发音发生了较大的变化，要记忆。 如do/du:/ →does/d?z/ ; say/sei/ → says /sez/ 。

b、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]。在中文中第三人称单数的三个“他”写法不一样，读音却相同。但在英语中，三个“他”既有不同的读音，也有不同的写法，分别是he, she, it。在第三人称后不能使用动词的原形，而要在相应的动词后加s或es。

简单地讲，一个人就是单数，多于一个人就是复数。在咱们汉语里，第三人称复数也就是常说的“他们”或者“她们”，英语中就是they.

而“第三人称单数”就是指的“他”或者“她”，在英语中，相对应的就是he或者she 句子举例： 第三人称单数： He is a student. （他是学生）

第三人称复数： They are students.（他们是学生）

以上只是一种帮助你理解的简单回答，第三人称还包括一些其他的方面，比如“it”等，这里就不多说了，希望你在学习中多多体会。

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。

下面我们归纳一下第三人称单数的用法：

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：

②"I" is a letter. "I"是个字母。[1]

 

第二篇：第三人称单数专项练习

第三人称单数问题

一般现在时中，当主语是第三人称单数时，即常在动词原形后加-s或-es。

第三人称单数变化，现归纳总结如下：

1.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。

2.单个人名、地名或称呼作主语；用第三人称单数。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。

4.不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，第三人称单数。

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。

5.不可数名词作主语时为第三人称单数。如： ①The milk is in the glass. ②The bread is very small. 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：

①stop－stops [s] ; make－makes [s] ②read－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－worries

3、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：

1、do [du:]－does [dz] 2、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]

作业

I. 写出第三人称单数：

wash_________ match _______guess______ study______ finish_________ go________ snow______ carry_________

II. 用所给动词的适当形式填空：

1. He________ TV every evening. (watch)

2. We always ________ to school on foot. (go)

3. Tom, with his classmates, often ______ football after school. (play)

4. Your shoes _______ under the bed. (be)

5. ______ here and ______ by me. (come, stand)

6. His uncle usually _________ to work by bus. (go)

7. I always ______ up at six in the morning.(get)

8. John ________ like his father. (look)

请看下面两组句子，注意区分他们的共同点和不同点。

I go to school every day.

I don't go to school every day.

He goes to school every day. He doesn't go to school every day.

Do you go to school every day?

Yes, I do. (No, I don't)

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".

二、用词的适当形式填空。

1.What time_________ his father_________(do) the work?

2.He _________(get) up at five o’clock.

3.__________you_________(brush) your teeth every morning.

4.What ________ ( do ) he usually ________( do ) after school?

5.Tom ________ ( study ) English, Chinese, Maths, Science and Art at school.

6. Kitty sometimes __________(go) to the park with his sister.

7.At eight at night, she __________( watch ) TV with her parents.

8.________Mike________( read ) English every day?

9.How many lessons________ your classmates______( have ) on Monday?

10.We often___________ ( play ) football in the playground.

三．选择

( ) 1. _____ you have a book?

A. Do B. Are C. Is D. Have

( )2. They _________ on a farm.

A. working B. is work C. work D. is worked

( ) 3. Does Peter like to watch TV?__________.

A. Yes, he like B. No, he doesn’t C. Yes, he’d like D. No, he likes

( )4. She doesn’t __________ her homework in the afternoon.

A. doing B. to do C. does D. do

( )5. How ______ Mr. Brown _________ to America?

A. do,go B. is,go C. does,go D. does,goes

( )6. Where’s my camera? I_______ it.

A. am not finding B. am not seeing C. can’t find D. can’t look at

( )7. How___ he go to work?

He ____ to work by bike.

A. does ;go B. do;goes C. do ;go D. does;goes

( )8. ___ you usually late for school?

No, ___.

A. Do ; I am B. Does ;not C. Are ; I’m not D. Are ; I aren’t

( )9. _____ she _____ home at six every day?

A. Is , leave B. Does , leave C. Is , leaves D. Does , left

( )10. Mr. Yang ______ English this term.

A. teaches our B. teaches us C. teachs us D. teach our

填空.

1.Let him _____(play)basketball.

2.Everyone_____(know)what he really like.

3.Tose girls____(be)my sister.

4.That girl_____(call)me evety Sunday.

5.How___(do)she_____(spell)the word?

否定句:在动词前+doesn't或don't.

1.She_____ _____(do)her homework every day.

2.He_____ _____(live)in Huanggang.

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 bieds in the sky.

7.Jenny runs home and_____ _____(sit)on the chair.

一般疑问句:

1._____the desk_____(have)four legs? Yes,it does.

2._____she____(do)her homework every day?

Yes,she does.

3._____he_____(live)in Huanggang? No,he doesn't.

4._____he_____(need)a pair of shoes? NO,he doesn't.

5.Does Danny_____(see)the aoole tree?

6._____she_____(come)from America?

Yes,she_____.

7._____the girl_____(look)out of the window and sees many birds in the sky? No,she_____.

8._____Jenny runs home and_____(sit)on the chair?

9. My father is very strong. He can (carry) heavy box easily.

）写出下列动词的三单形式：

have are run

guess try study

catch stay destroy

wash match guess finish go carry

2）用动词的适当形式填空：

①He（be） a boy.

②He（have）a book.

③He (like) to (go) to school.

④My mother (do not) like red .

⑤ home.

⑥Two boys and a girl (be) here.

⑦Tom with me often (watch) TV.