be动词的人称变化规则
2022-03-20
扩展资料
be动词的两种句子形式 :
(一) 肯定形式: 主语+be+其它.
I am (I’m) a doctor.
2. You are (You’re) a doctor.
3. He is (He’s ) a doctor.
4. She is (She’s ) a doctor.
5. It is (It’s ) a cat.
6. This is a desk.
7. That is a desk .
8. We are (We’re ) doctors.
9. You are (You’re ) doctors.
10. They are (They’re )doctors.
11. These are desks. 12. Those are desks.
(二)否定句形式: 主语+ be + not+其它 (构成方法: 肯定句变否定句,只要在be 后+not 即可) 以上面的句子为例,将肯定句变为否定句.
I am not a doctor. (注: am 和is 不能缩写 )
2. You are not (aren’t ) a doctor.
3. He is not (isn’t ) a doctor.
4. She is not (isn’t ) a doctor.
5. It is not ( isn’t ) a cat.
6. This is not (isn’t ) a desk.
7. That is not (isn’t ) a desk .
8. We are not (aren’t ) doctors.
9. You are not (aren’t ) doctors.
10. They are not (aren’t ) doctors.
11. These are not (aren’t ) desks.
12. Those are not (aren’t ) desks.