It's a picture of the Great Wall 对划线部分提问

It's a picture of the Great Wall 对划线部分提问
It's a picture of the Great Wall 对划线部分提问

It's a picture of the Great Wall 对划线部分提问
What's the picture?

它是一幅长城

对 “ a picture of the Great Wall" 提问：What's it?
对 the Great Wall 提问：What's the picture of?

It's a picture of the Great Wall.
意思是：这是一幅长城的图片。