many much little a little few a few more fewer less enough的区

many,much都意为"许多",many + 可数名词,much + 不可数名词.
How many people are there at the meeting?
How much time has we left?
a little,后跟不可数名词,意思是一些
There is a little water in the bottle,you can have it.(瓶子中还有一些水,你可以喝)
a few,后跟可数名词复数,意思是一些
I have a few oranges.(我有一些橘子)
little,后跟不可数名词,意思是几乎没有,很少
She is very poor and she has litte money.(她很穷,几乎没什么钱)
few,后跟可数名词复数,意思是几乎没有,很少
There are few trees here.(这里几乎没有树)
more 是说更多,有时候也用more than 搭配,一般用语可数名词
fewer 更少,也是可数名词
less,更少,有时候less than 搭配,用语不可数名词
enough adj.足够的,修饰可数名词或不可数名词,可以放在名词前面,也可以放在名词后面;adv.足够地,修饰形容词、副词、动词,并放在其后.

many ：修饰可数名词复数 eg：There are many apples 。
much ：修饰不可数名词 eg：There is much milk 。
little ：完全否定词 表几乎没有 eg：There is little milk。
a little： 比little多 eg： There is a little milk。