many用来修饰复数可数名词vexed，表示许多的意思，与few（少数）的意思相反。
much则用来修饰不可数名词，表示量或是程度，与little（少量）的意思相反。
拓展知识：
1.many
例句：
Fish is a source of many important nutrients, including protein, vitamins, and minerals.
鱼是很多重要养分的来源之一,包括蛋白质、维生素和矿物质。
Many patients are trapped in a revolving door of admission, discharge, and readmission.
许多病人陷入了入院、出院、再入院的怪圈里。
Many felt that the ending rendered the story incomplete, or at least indeterminate.
许多人感到这个结局使得故事不完整,或至少含糊不清。
This would explain why so many adult children still live with their parents.
这就是如此多的成年儿女仍然和父母亲生活在一起的原因。
Many agencies are helping to keep personnel at their jobs by providing perks.
许多机构靠提供额外好处来留住员工。
Many of the lochs we used to fish are now affected by forestry.
许多我们过去常去钓鱼的湖泊现在都受到了林业的影响。
Many years will go by fore you have a Europound in your pocket.
要在口袋中有欧元镑不知得等到哪年。
Social services is trying to satisfy the needs of so many different groups.
社会服务部门正努力满足许多不同群体的需要。
Many agencies now have a unit to deal with women’s needs vis-à-vis employment.
现在许多机构都设有一个处理有关妇女就业需求的部门。
One journal has avoided the narrowcasting that seems to enslave so many mainstream magazines.
有一家杂志避免了束缚住众多主流杂志的有限传播信息的做法。
2.much
例句
The right wing had lost much of its political leverage in the Assembly. 右翼力量在议会里已经失去了不少政治影响力。
I didn’t mean to drink so much red wine on a school night. 我原来并不想在第二天还得早起的晚上喝这么多红酒。
She could observe the other guests without too much fear of attracting attention. 她可以看到其他客人而无须过于担心会引起别人的注意。
What they don’t do is introspect much about the reasons for their plight. 他们没做的就是多反省一下导致自己陷入困境的原因。
Politicians who have invested so much time in the Constitution would be crestfallen. 那些对宪法投入大量时间与精力的政界人士会感到沮丧。
She looked so much better that Sir Charles noticed it to Lady Harriet. 她看上去气色好多了,查尔斯爵士把这情况告诉了哈丽雅特夫人。
The wages were low but they made half as much again in tips. 工资很低,但是他们靠小费再挣上半份工资的钱。
The government is concerned to secure the economy against too much foreign ownership. 政府十分注意防止过多外资所有权对本国经济的威胁。
The vexed question of exactly how much money the government is going to spend. 关于政府到底将花多少钱的这样一个争论不休的问题。
His tireless energy and folksy oratory were much in demand at constituency lunches . 他那不知疲倦的亲民讲演在选区午餐会上非常受欢迎。
