a few,a little, many, much,a lot of and no,有什么不同

首先要知道名词是分成可数名词和不可数名词两大类的.
many和much都表示“许多”,区别是many后接可数名词；much后接不可数名词；
a lot of后既可以接可数名词,也可以解不可数名词,其强调式是lots of;
few和a few后均接可数名词,区别是a few表示“肯定”,few表示“否定”；
little与a little后接不可数名词,区别为a little表示“肯定”,little表示“否定”.
no表示“不”,可单独使用否定名词.
举例如下：
1）There are many trees and flowers in our school.
2）I have much money.
3）He has a lot of friends at school.
He has a lot of money.
4）I am new here,so I have few friends.（没有朋友）
5）I have a few questions to ask.（相当于several)
6）There is little milk in the bottle.（没有牛奶了）
7）There is a little milk in the bottle.（还有一点牛奶）
8）She has no brothers or sisters.

a few 一些 适用可数
a little 一些 适用不可数
many 许多 可数
much 不可数 许多
a lot of 可数，不可数名词
no 没有