1. That's a blackboard.(变否定句） 2. She is in Class Three.(对划线部分提问）___ ___ is she?3. She is thirteen years old.(对划线部分提问） 4. ls this a car?(作出肯定回答和否定回答）

1. That's a blackboard.(变否定句） 2. She is in Class Three.(对划线部分提问）___ ___ is she?3. She is thirteen years old.(对划线部分提问） 4. ls this a car?(作出肯定回答和否定回答）
1. That's a blackboard.(变否定句） 2. She is in Class Three.(对划线部分提问）___ ___ is she?
3. She is thirteen years old.(对划线部分提问） 4. ls this a car?(作出肯定回答和否定回答）

1. That's a blackboard.(变否定句） 2. She is in Class Three.(对划线部分提问）___ ___ is she?3. She is thirteen years old.(对划线部分提问） 4. ls this a car?(作出肯定回答和否定回答）
1.That isn't a blackboard./ That's not a blackboard.
2.Which class
3.How old is she?
4.肯定：Yes,it is.
否定：No,it isn't.

That is not/isn't a blackboard.
Which class
How old is she?
This is a car.
This is not/isn't a car.

1.That's not a blackboard.
2.Is she in Class Three?
3.How old is she?
4.Yes,it is./No,it isn't.