many修饰或代替可数名词复数，与few(少数）相对；而much用来修饰或代替不可数名词，与little(少量）相对。many和much的区别在于many+可数名词，much+不可数名词。

much和many的用法和区别

1、many修饰可数名词复数，如：There are many people.

much修饰不可数名词复数，如：I have much money.

2、many作代词代表可数名词，如：Many of the students have great results.

much作代词代表不可数名词，如：Much of the air is fresh.

3、much还可以修饰动词，many不行。如：I love you so much.

4、much还可以修饰比较级，many不行。如：

He's much taller than her.

It's much more difficult than you thought

much和many的例句

Did you see many people there?

你在那儿看见许多人了吗?

Many poets have died young.

许多诗人很年轻就死了。

Do you have much money left?

你剩的钱多吗?

He doesn’t spend much time preparing his lessons.

他备课不花太多时间。

Many housewives find it a tiring job to keep a house.

许多家庭主妇觉得管理家务很累。

She hadn’t much money, but she felt very happy.

她没有很多钱，但却感到很幸福。