一、much 作限定词，用来表示某个单数不可数名词的数量大，意为“许多”，修饰单数不可数名词
1、一般用于否定句和疑问句中，例如：
I haven’t got much change. I’ve only got a ten euro note.
我没有多少零钱。我只有一张十欧元的钞票。
Is there much unemployment in that area?
那个地区失业率高吗？
It was pouring with rain but there wasn’t much wind.
雨下得很大，但风不大
2、在更正式的场合里，much 用于肯定句，否则用 lots of, a lot of 或 plenty of，例如：
There is much concern about drug addiction in the US.
在美国，人们非常担心吸毒成瘾。
3、在面对面的谈话中 用 this much 或 that much 加手势来表明数量，例如：
I only had that much cake. （配合手势）
我只吃了那么多蛋糕。
4、关于 much of
当名词被冠词a/an 和 the，指示代词 this 和 that，my, your 等形容词性物主代词修饰时，或修饰宾格代词时，much 后面要加 of，例如：
单数可数名词：
How much of this book is fact and how much is fiction?
这本书有多少是事实，多少是虚构的？
不可数名词：
Much of the food we eat is of very poor or indifferent quality.
我们吃的许多食物质量要么很差，要么很一般。
Much of his early work is concerned with the minutiae of rural life.
他早期的许多作品关注的是农村生活中一些鸡毛蒜皮的琐事。
代词：
I think you're expecting too much of me.
我认为你对我的期望太高了。
Sorry we've taken up so much of your time.
对不起，占了你这么多时间。
Has much of this actually been tried here? Or is it just talk?
这个多半已经真正尝试过了吗？还是仅仅说说而已？
5、too much 意为“太多的，不必要的”，修饰不可数名词，例如：
I bought too much food. We had to throw some of it away.
我买了太多的食物。我们不得不扔掉一些。
解析：此句中的 too much 中的 much 是重心，要区别于以 too 为重心的短语 much too.
当名词是前面提到过的，可以省略名词，单独使用 too much，例如：
A: They had a lot of work to do.
他们有很多工作要做。
B: Too much.
太多了。
6、在肯定句中，用 so much 而不用 very much 来强调某个东西的数量很大，可以译为”那么多，如此多“，例如：
He has so much money!
他有那么多钱！
解析：此句不能改成 He has very much money!
7、使用 as much + 不可数名词 + as | as much as 作数量的对比，例如：
Try and find out as much information as you can.
尽可能多地找出信息。
Take as much time as you like.
你想花多少时间就花多少时间。
Experts reveal only as much as they care to.
专家们只透露了他们想透露的那些。
二、作副词，修饰动词，形容词及比较级或副词及比较级，比较级和最高级分别是：more 和 most
1、修饰动词，放在实义动词的前面或后面，be 动词之后，例如：
实义动词：
Thank you very much for the flowers.
非常感谢你的这些花。
I would very much like to see you again.
我很想再见到你。
be 动词：
My new job is much the same as the old one.
我的新工作和旧工作差不多。
2、修饰形容词及比较级，例如：
形容词：
The matter is much exaggerated.
这件事被大肆夸张了。
I'm not much good at tennis.
我不太擅长打网球。
We are very much aware of the lack of food supplies.
我们完全了解食物供应的缺乏。
形容词比较级：
Sometimes the prices in the local shop are much better than the supermarket’s prices.
有时当地商店的价格比超市的价格好得多。
I feel much calmer now I know she’s safe.
现在我知道她安全了，我觉得平静多了。
副词：
The skin is much too delicate.
皮肤太娇嫩了。
The other one was much too expensive.
另一个太贵了。
解析：以上两句中的 much too 中的 too 是重心，要区别于以 much 为重心的短语 too much.
副词比较级：
She’s walking much more slowly since her operation.
手术后她走得慢多了。
解析：此句中副词 slowly 的比较级是 more slowly，much 修饰 more slowly.
Babies lose heat much faster than adults.
婴儿散失热量较成人快很多。
三、常见的 much 习语
1、as much 一样；同等，例如：
I'm as much in the dark as you.
我和你一样毫不知情。
2、as much as sb can do 表示难以做到，例如：
No dessert for me, thanks. It was as much as I could do to finish the main course.
谢谢，别给我添食了。我吃完这道主菜就不错了。
3、not much in it 没什么区别；差别不大，例如：
I won, but there wasn't much in it.
我赢了，但比分相差不大。
4、not much of 不是很好；不怎么样，例如：
He's not much of a tennis player.
他算不上网球好手。
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