quantity 的疑问句 用法?

问题描述:

quantity 的疑问句 用法?
今天朋友到英孚上语法课,其中有quantity的疑问句用法:
If you want to know the quantity.用how much 来提问.
请问这种情况用how much 还是应该用how many
还有:If you want to know the number.
应该用how many 进行提问,还是用其他呢?

number 用what 提问
一般都是 what's the number