一般现在时(1)

1、当句子表状态说明主语是什么或怎么样时，其句型：主+BE动词（am, is, are）+表语，否定式是在BE动词后加not，疑问句是将BE动词提前到句首（即在主语之前）

The twin sisters are from America. 这对孪生姐妹是美国人。

The twin sisters are not from America.

Are the twins from America?

2、当谓语由实义动词充当，主语不是第三人称单数时，

句子结构为：主语+动词原形+其它

否定式为：主语+don't+动词原形+其它

疑问句为：Do+主语+动词原形+其它？

We speak Chinese.

Do you speak Chinese?

They don't speak Chinese.

当主语是第三人称单数时：

句子结构为主语+动词（词尾加s或es）+其它。

否定式为：主语+doesn't+动词原形+其它。

疑问句式：Does+主语+动词原形+其它？

1.多数在动词后＋s play —plays like —likes

（1）直接在动词词尾加-s.

ask---asks work---works get---gets stay---stays

（2）以字母s, x, ch, sh或o结尾的动词，在词尾直接加-es.

watch---watches wish---wishes fix---fixes do---does

go---goes pass---passes

（3）以“辅音字母加- y”结尾的动词，要先变y为i再加-es.

try---tries study---studies cry---cries fly---flies

情况构成方法读音例词

一般情况加-s

清辅音后读/s/ 浊辅音和元音

后读/z/ swim-swims；help-helps；like-likes

以辅音字母+o结尾的词加-es 读/z/ goes,does

以s,sh,ch,x等结尾的词加-es 读/iz/ watches,washes 以辅音字母+y结尾的词变y 为i再加es 读/z/ study-studies

不规则变化have和be 动词变have 为has变be为

am,is,are

have-has be-am,is,are

当主语是第三人称单数时：

1、动词变相对应的第三人称单数形式

2、肯定句主语+动词s+其它

3、否定句主语+doesn't+动词原形+其它

4、一般疑问句Does+主语+动词原形+其它

5、肯定回答Yes，主语+does

6、否定回答No，主语+doesn't

7、特殊疑问句特殊疑问词+一般疑问句

当主语不是第三人称单数时：

1、肯定句主语+动词原形+其它

2、否定句主语+don't+动词原形+其它

3、一般疑问句Do+主语+动词原形+其它

4、要注意，句式结构错则全都错。

5、谓语动词的形式：do/does

三、一般现在时的结构

一般现在时的结构

肯定式疑问式否定式否定疑问式

I work. Do you work? I don't work. Don't you work?

You work. Do you work? You don't work. Don't you work?

We work. Do you work? We don't work. Don't you work?

They work. Do they work? They don't work. Don't they work?

He(She,It) works. Does he(she,it) work? He(She,It) doesn't work. Doesn't he(she it) work?

一、写出下列动词的第三人称单数

drink ________ go _______ stay ________ make ________

look _________ have_______ pass_______ carry ____

come________ watch______ plant_______ fly ________

study_______ brush________ do_________ teach_______

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.