注意：（动词三单特殊形式）

go→goes，do→does

have→has be→is

哪些主语是第三人称单数? 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。

   he 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。

Bob does his homework every day. 鲍勃每天都做家庭作业

三、单数名词或"this / that / the+单数可数名词"作主语时，是第三人称单数。如：

   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。

四指示代词this,that作主语时，是第三人称单数。如：

   ③This is a pen. 这是一支钢笔。

   ④That is an eraser. 那是一块橡皮擦。

巩固练习题：（三单形式）
1.work_______
2. watch_________
3. clean________ 
4. write_______
5. teach_______
6. wash__________
7. have_______
8.read________  
9. go__________ 
10. do__________
11. fly________ 
12. study_______
13.She ---------- (watch) TV.
   I ---------- (watch) TV.

I 写出动词的第三人称单数

work________

read_______

clean______

write______

teach_______

guess______

watch______

study________

cry________

play______

have______

match ______

finish______

carry______

say________

go

do

play

jump

swim

run

put

sing

dance

come

get

have

fly

study

read

write

look

drink

eat

walk

like

二．填空：

1.She ______(do) homework by herself.

2.Jack ______(go) home by bike.

3.The giant______(climb) up the beanstalk.

4.Her mum ______(run) to the goose.

5.He______(do not)like apple.

6,Sam______(put) it under his arm.

7.The boy_______(chase) it.

8.Kitty______(watch)TV everyday.

9.He______(feed)them at 8:00 in the morning.

11.Grandma Wang___(live) in Pudong.

12.The girls___(give) the key to Grandpa.

13.That key ______(open) the old box.

14.She ______(say) “I like these puppets”.

17.He doesn’t______(know)her name.

18.John can’t_______(find) his watch.

19.Where _____(do)Grandma live?

20.How does he______(go)to the post office?

动词三单变化规则与练习