I don't know what his name is和I don't know what time is it为什么后者多了一个it?第二个打错了,是I don't know what time it is,为什么第二个要比第一个多一个it?

问题描述:

I don't know what his name is和I don't know what time is it为什么后者多了一个it?
第二个打错了,是I don't know what time it is,为什么第二个要比第一个多一个it?