一般现在时中有be动词吗？

一般现在时中的be动词，一般是出现在主语+谓语+表语的句子结构中，表语通常为形容词与名词。例如：She is beautiful. It is a book.
一．be动词：
　　动词be (am, is, are)说明身份、年龄、状态等
I am a teacher.
I am 21 years old.
I’m very healthy.

二、be动词的人称变化：
　　第一人称I，后面的动词用am;
　　第三人称he/she/it, 后面的动词用is;
　　第一人称复数we, 第二人称you, 第三人称复数they，后面的动词用are.

三、be 动词在一般疑问句和否定句中的表达：
--- Are you the student from Class Two?
--- No, I’m not.
从上面例句中可看出，动词be一般现在时的一般疑问句中把be提到句首，它的否定句式是在be后直接加not。

四、be 动词的具体使用：
1．be + 形容词
I’m very tired.
He is handsome and smart.

2. be + 名词
Mike is a Canadian teacher.
They are my close friends.

3. be + 介词短语
The flowers are in the vase.
She is at home now.
Are they from Russia?
The teacher and the students are in the classroom.
4. be + 形容词短语
He is only 7 years old.
My holiday is always long enough.
5. be +副词
The game is over.
I’m home.

6. 用于表示时间：
Today is Sunday.
The next match will be at 7.
7. 用于现在进行时：
Peter is running in the heavy rain.
We are leaving here next Monday.