This is a white bike.改为一般疑问句
Is this a white bike?My chair is orange.改为一般疑问句,肯定回答
Is my chair orange?Yes,it is.
Is that a gray pencil?否定回答
No,it isn't.
These books are Miss Gao's.用Whose提问
Whose books are these?
This is a new door.改为否定句
This isn't a new door.
That's a black cat 对a black cat提问
What's that?
It's brown and yellow 对brown and yellow提问
What color is it?