How fast the boy is running?

问题描述:

How fast the boy is running?
把running去掉可不可以?为什么?
若改用what引导,是不是What a fast boy he is?若是这样,那么running
要放哪儿?
running在第一句中是做什么成份?

那就要放后面了
what a fast boy he is running