How many days are in a month

问题描述:

How many days are in a month
How many days are there in a month ,对于初一的学生来说这句话里的there去掉了,这句话还是正确的吗?

举例:There are 30 days in a month.
对其中的 30 提问,就变成了 how many days are there in a month?
如果去掉there的话,原句就缺少主语了,所以不能去掉.