动词第三人称单数形式构成规则

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动词第三人称单数形式构成规则
一般现在时------动词第三人称单数形式构成规则(一般现在时中主语时第三人称)
1、大多数动词在词尾加“S”如:
①stop-stops make-makes read-reads 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 carry-carries study-studies worry-worries
3、以“s, x, ch, sh”结尾的,在词尾加“es”,发音为如:
teach-teaches watch-watches
4、以“o”结尾的动词,加“es”,如:
go-goes do-does
5、以不发音字母“e”结尾的开音节词,加“s”如:close-closes [iz]
6、be动词包括:am,is,are。

第三人称单数用is;过去式为was;复数用are,过去式为were.
1. 动词 have ,遇到主语是第三人称单数时,要用 has;动词 be 的第三人称单数形式是is。

2. 含有动词第三人称单数形式的句子变否定句时,要用 doesn't + 动词原形,如:
He goes to school at six in the morning. (变否定句)→ He doesn't go to school at six in the morning.
3. 对含有动词第三人称单数形式的句子提问时,要用助动词 does,如:
She goes home at five every day. (对划线部分提问)→ When / What time does she go home every day?
一般现在时中的第三人称单数形式
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。

I 什么是一般现在时?一般现在时的基本用法有哪些呢?
【No. 1】一般现在时的功能
1.表示事物或人物的特征、状态。

如:The sky is blue.天空是蓝色的。

2.表示经常性或习惯性的动作。

如:I get up at six every day.我每天六点起床。

标志词(时间状语):
always, every week (day, year, month…), once a week,
every…, sometimes, at…, on Sunday uauslly often,never,hardly..........
3.表示客观现实。

如:The earth goes around the sun.地球绕着太阳转。

【No. 2】一般现在时的构成
1. be动词:主语+be(am,is,are)+其它。

如:
I am a boy.我是一个男孩。

2.行为动词:主语+行为动词(+其它)。

如:
We study English.我们学习英语。

当主语为第三人称单数(he, she,it)时,要在动词后加"-s"或"-es"。

如:
Mary likes Chinese.玛丽喜欢汉语。

【No. 3】一般现在时的变化
1. be动词的变化。

a 否定句:主语+ be + not +其它.如:
He is not a worker.他不是工人。

b 一般疑问句:Be +主语+其它。

如:-Are you a student?
-Yes. I am. / No, I'm not.
c 特殊疑问句:疑问词+一般疑问句。

如:
Where is my bike?
2.行为动词的变化。

a 否定句:主语+ don't( doesn't ) +动词原形(+其它)。

如:
I don't like bread.
b 当主语为第三人称单数时,要用doesn't构成否定句。

如:
He doesn't often play.
c 一般疑问句:Do( Does ) +主语+动词原形+其它。

如:
- Do you often play football?
- Yes, I do. / No, I don't.
当主语为第三人称单数时,要用does构成一般疑问句。

如:
- Does she go to work by bike?
- Yes, she does. / No, she doesn't.
【No. 4】特殊疑问句:疑问词+一般疑问句。

如:
How does your father go to work?
II 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。

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写出下列动词的第三人称单数形式:
sit-- guess-- die-- go--
rush-- reach-- touch-- brus h--
fly-- copy-- say-- run--
do-- fix-- live-- cry--
enjoy-- have-- wish-- play --
Tie-- teach-- buy-- stud y--
drink-- go-- stay-- make --
look-- carry-- come-- watc h--
plant-- fly --
do--
二、用括号内动词的适当形式填空。

1. He often ________(have) dinner at home.
2. Daniel and Tommy _______(be) in Class One.
3. We _______(not watch) TV on Monday.
4. Nick _______(not go) to the zoo on Sunday.
5. ______ they ________(like) the World Cup?
6. What _______they often _______(do) on Saturdays?
7. _______ your parents _______(read) newspapers every day?
8. The girl _______(teach) us English on Sundays.
9. She and I ________(take) a walk together every evening.
10. There ________(be) some water in the bottle.
11. Mike _______(like) cooking.
12. They _______(have) the same hobby.
13. My aunt _______(look) after her baby carefully.
14. You always _______(do) your homework well.
15. I _______(be) ill. I’m staying in bed.
16. She _______(go) to school from Monday to Friday.
17. Liu Tao _______(do) not like PE.
18. The child often _______(watch) TV in the evening.
19. Su Hai and Su Yang _______(have) eight lessons this term.
20. -What day _______(be) it today?
-It’s Saturday
.三、按照要求改写句子
1. Daniel watches TV every evening.(改为否定句)
___________________________________________________
2. I do my homework every day.(改为一般疑问句,作否定回答)
________________________________________________________
3. She likes milk.(改为一般疑问句,作肯定回答)
___________________________
4. Amy likes playing computer games.(改为一般疑问句,作否定回答) ___________________________________________________
5. We go to school every morning.(改为否定句)
_______________________________________________________
6. He speaks English very well.(改为否定句)
___________________________________________________
7. I like taking photos in the park.(对划线部分提问)
________________________________________________________
8. John comes from Canada.(对划线部分提问)
___________________________________________________
9. She is always a good student.(改为一般疑问句,作否定回答) ________________________________________________________
10. Simon and Daniel like going skating.(改为否定句)
___________________________________________________
四、改错(划出错误的地方,将正确的写在横线上)
1. Is your brother speak English? __________________
2. Does he likes going fishing? __________________
3. He likes play games after class. __________________
4. Mr. Wu teachs us English. __________________
5. She don’t do her homework on Sundays. _________________。

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