We' ll have hour picnic in the people's park.You know where that is.这句中的that为什么不改为is?

问题描述:

We' ll have hour picnic in the people's park.You know where that is.这句中的that为什么不改为is?

你是说 改为it
这句话的意思是我们将在人民公园举行野餐 你知道那在哪
其实这句用it 也是可以的