many +可数名词   

 much +不可数名词。

有多少人在开会?  How many people are there at the meeting ？

我们还有多少时间？  How much time has we left ？

许多工人们在开会。  Many of the workers were at the meeting

 太多的时间花在学习上。  Much of the time was spent on learning

 few +可数名词  

  a few +可数名词    

 a little +不可数名词   

little +不可数名词

a few ，a little 为肯定含义 还有一点

 Few，little 为否定含义 没有多少了。

 他有几个朋友。  He has a few friends

 他几乎没有朋友。  He has few friends

我们还有点时间。  We still have a little time

几乎没剩下什么时间了。  There is little time left

尽管他富有 但他在衣服上很少花钱   Although he's wealthy  he spends on little clothes

很少  only a few  

 few

许多  not a few

  many

 quite a few  

 many a

卖出了许多书。  Many books were sold  

 Many a book was sold