一般现在时动词第三人称单数变化规则

一、概述

一般现在时的概念和用法：

（1）表示现阶段经常、反复、习惯性的动作；

（2）表示目前的状况；

（3）表示自然界的客观真理。

二、一般现在时的结构

时态的结构指的是动词的变化形式。一般现在时间有两种结构，一种是动词原形，用于主语为非第

三人称时的情况；另一种为动词的第三人称单数形式，用于主语为第三人称时的情况。

Eg1. We often get up early in the morning.

Eg2. My father ofte n gets up early in the morning.

三、谈谈主语为三单，其后动词s添”

在一般现在时中，当主语为第三人称单数时，谓语动词要用第三人称单数形式。可以简单叙述为主语为三单，其后动词s添”。何谓第三人称单数用一句话概括就是非你、非我、非复数”，如he, she, it, my father, my mother, my sister, our English teacher, Tom, Mike, Liu Jia, China, my book, etc.

Eg3.He sometimes goes to school by bike.

Eg4.My father works in the hospital as a doctor.

四、一般现在时的肯定句中，主语为第三人称单数的动词变化主要体现在词尾的变化上，其规律为：（与名词变成复数的变法大致相同。）

五、一般现在时的句子转换

（1）当句子中有be动词或情态动词时，则把be动词或情态动词（can,could等等）提到主语的前面变成一般疑问句；在be动词或情态动词后面加not变成否定句.例：

①陈述句：She is a student.

一般疑问句—Is she a stude nt?

否定句—She is not a stude nt.

②陈述句：I can swim.

一般疑问句—Can you swim 否定句—I can not swim.

（2）当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do （you,以及复数）,does（单数she,he,it）变成一般疑问句；在主语后谓语动词前加助动词don' t I,you,以及复数）,doesn '单数

she,he,i）变成否定句，助动词后的动词要变成动词原形。例：

①陈述句：We get up at 7:00 every morning.

一般疑问句f Do you get up at 7:00 every morning?

否定句f We don' t get up at 7:00 every morning.

②陈述句：She has a little brother.

一般疑问句f Does she have a little brother?

否定句f She doesn ' t have a little brother.

哪些主语是第三人称单数

1 人称代词he, she, i；

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；是第三人称单数。如：

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 ofte n makes cakes .王叔叔经常做蛋糕。

3、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；

A horse is a useful ani mal.马是有用的动物。

This book is yours.这本书是你的。

That car is red.那辆小汽车是红色的。

The cat is Lucy's.只猫是露茜的。

4、不可数名词作主语时为第三人称单数。如：

The milk is in the glass牛奶在玻璃杯里。

The bread is very small.那面包很小。

The water is very cold.那些水很凉。

1写出下列动词的第三人称单数

2. We _____________ (not watch) TV on Mon day.

3. Nick __________ (not go) to the zoo on Sun day.

4. ______ they __________ (like) the World Cup?

5. What ________ they ofte n _________ (do) on Saturdays?

6. _______ your pare nts ________ (read) n ewspapers every day?

7. There ________ (be) some water in the bottle.

8. My aunt ______ (look) after her baby carefully.

9. The child ofte n _____ (watch) TV in the eve ning.

10. Mike ' s sister _________ (cook) nice food . _____ (like) eating it very much.

11. ______ (do) your brother ______ (watch) TV in the eve ning? No, he ______ (no t).

12. We often __________ (play) in the playground.