Many，much都意为"许多"， many + 可数名词，much + 不可数名词。例如：

How many people are there at the meeting？ 多少人出席了会议。

How much time has we left？ 还剩多少时间？

Many of the workers were at the meeting.许多工人在开会。

Much of the time was spent on learning.学习上化了许多时间。