Question

将下列句子改成否定句，一般疑问句，并作肯定句回答

1.This is a bag.
2.That is my bike.
3.You are a bus driver.
4.Mary Green is in ofice.
5.You are English teachers.
6.peter's shoes are black.
7.We are in the classroom.
8.Their knives are new.

Answer 1

1.This isn't a bag. Is this a bag? yes, it is.
2.That isn't my bike. Is that your bike? yes, it is.
3.You are not a bus driver. are You a bus driver? yes,i am.
4..Mary Green isn't in office. .Is Mary Green in office? yes,she is.
5.You are not English teachers.Are You English teachers? yes,we are.
6.peter's shoes are not black. Are peter's shoes black? yes,it is.
7.We are not in the classroom.Are We in the classroom? Yes,we are.
8.Their knives are not new..Are their knives new? yes, they are.

Answer 2

1.Is this a bag?
Yes, it is.
This isn't a bag.

2.Is that my bike?
Yes, it is.
That isn't my bike.

3.Are you a bus driver?
Yes, I am.
You are not a bus driver.

4.Is Mary Green in office?
Yes, she is.
Mary Green isn't in office.

5.Are you English teachers?
Yes,,I am.
You are not English teachers.

6.Are Peter's shoes black?
Yes,, they are.
Peter's shoes are not black.

7.Are we in the classroom?
Yes, we are.
We are not in the classroom.

8.Are their knives new?
Yes, they are.
Their knives are not new.

By the way. 我个人觉得第五句应该有些错误吧，原句应该是You are a English teacher. 这样吧

Answer 3

1.Is this a bag?
Yes, it is.
This isn't a bag.

2.Is that my bike?
Yes, it is.
That isn't my bike.

3.Are you a bus driver?
Yes, I am.
You are not a bus driver.

4.Is Mary Green in office?
Yes, she is.
Mary Green isn't in office.

5.Are you English teachers?
Yes,,I am.
You are not English teachers.

6.Are Peter's shoes black?
Yes,, they are.
Peter's shoes are not black.

7.Are we in the classroom?
Yes, we are.
We are not in the classroom.

8.Are their knives new?
Yes, they are.
Their knives are not new.【这个句子好像有毛病...]
一般疑问句改为否定句要把be动词改为否定形式
改为疑问句是要把be动词提前（be动词就是am is are ；am提前试要变成are）