一般现在时有三种形式

1. 谓语是be（am/is/are）的一般现在时。

①肯定形式：主语+be+表语(形容词、名词充当表语)。

I am hungry.

You are beautiful.

He is a doctor.

②否定形式：主语+be+not+表语(形容词、名词充当表语)。

I am not hungry.

You aren't beautiful.

He isn't a doctor.

③一般疑问句形式：Be+主语+表语(形容词、名词充当表语)?

肯定回答：Yes,主语+be. 否定回答：No, 主语+ be+not.

—Are you hungry?

—Yes，I am./No,I'm not.

—Is he a doctor?

—Yes, he is./No, he isn,t.

④特殊疑问句形式：特殊疑问词+Be开头的一般疑问句?

—What is he?

—He is a doctor.

注意：be要随着主语变。

2. 谓语动词是实义动词（及物动词或不及物动词）的一般现在时。

①肯定形式：“主语+及物动词+宾语”或“主语+不及物动词”。

She has a little brother.

她有一个弟弟。

The sun rises in the east.

太阳从东方升起。

②否定形式：“主语+don't/doesn't+及物动词+宾语”或“主语+don't/doesn't+不及物动词”。

She doesn't have a little brother.

她没有弟弟。

I don't eat every morning.

我每天早晨都不吃饭。

③一般疑问句形式：“Do/Does+主语+及物动词原形+宾语”或“Do/Does+主语+不及物动词原形”。

肯定回答：Yes,主语+do/does. 否定回答是：No, 主语+ don't/doesn't.

—Do you eat every morning?

—Yes, I do./No, I don't.

—Does she have a little brother?

—Yes, she does./No, she doesn't.

④特殊疑问句：特殊疑问词+do/does开头的一般疑问句?

What do you like?

When do you go to school?

注意：根据主语确定用do还是does。

3. 谓语是情态动词can/may...+动词原形的一般现在时。

①肯定形式：主语+情态动词can/may.....+动词原形+宾语。

I can finish my homework.

②否定形式：主语+情态动词can/may.....+not+动词原形+宾语。

I can't finish my homework.

③一般疑问句形式：情态动词Can/May.....+主语+动词原形+主语+宾语。

肯定回答是：Yes,主语+情态动词. 否定回答是：No, 主语+ 情态动词+not.

—Can you finish your homework?

—Yes，I can./No, I can't.

④特殊疑问句形式：特殊疑问词+情态动词can/may.....开头的一般疑问句?

—What can you do?

—I can do my homework.

注意：情态动词can/may.....+动词原形。