两者都表示“许多”，但 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（单数），与little（少//www.souquanme.com量）相对。
如：
Did you see many people there?
你在那儿看见许多人了吗？
I have many friends.
我有许多朋搜趣网友。
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。

形容词
1. How many bananas are in the basket?
这//www.souquanme.com个篮子里有多少香蕉？
2. How many brothers do you have?
你有几个兄弟？
3. Were there many people at the meeting?
有很多人到会吗？
代词
1. I don't need so many.
我不需要这么搜趣网多。搜趣网
2. I never want to have another experience like that. I've had one too many.
我永远不想再有一次那样的经历了，那一次已经够多的啦。

Many，许多，主语后面的动词要用复数。
比如：Many books are interesting. 许多书籍都很有趣。