表示“许多，很多”的词组按其用法归类：
1.很多的 many 修饰可数 much 修饰不可数
a lot of =lots of 修饰可数,不可数均可
plenty of 修饰可数,不可数均可,一般用于肯定句中 a number of 修饰可数
the number of 的意思是“某物的数量”不是许多的意思,这个某物肯定是可数的,要不哪里来的数量 2.很少的： a little 修饰不可数 a few 修饰可数 3.几乎没有： little 修饰不可数 few 修饰可数 4.一些：
some any 都可以修饰可数和不可数
一、 只能修饰名词复数形式 many、 a great/good many 、a
great/large number of 、scores of、dozens of和(quite )a few , 这类“许多”修饰作主语的名词时，谓语动词用复数
There are a great/good many English books in our school library. A great number of my friends have been to the Great Wall.
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Scores/Dozens of people were killed in the accident. I have made quit a few good friends,too. Many of them have watched the TV play.
A great many of us like American English better than British English. the number of + n （可数名词复数）表示\的数目”,用它做主语时，谓语用单数
The number of the students in our class is 55.
二、只能修饰不可数名词的“许多” much、 a great / good deal of 和a large amount of ，这类“许多”修饰主语名词时候，谓语用单数
eg I don't know they gave us much help.
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There is a great/good deal of snow on the ground.
I spend a large amount of money on books every month. Much has been said about it .
a great deal 做名词词组和副词词组，也表示“大量，许多”/ 还可以修饰比较级，表示程度。
At the end of the year there was a great deal to do .(年底有很多事情做）
They talked a great deal about the problem.(他们对这个问题谈论了许多）He is a great deal better today （他今天好多了）（修饰比较级，表示程度）
三、既可以修饰可数名词复数，又可以修饰不可数名词 a lot of 、lots of 、plenty of 、supplies of ，a great/quantity of 、great/large quantities of
例he has got a lot/lots of questions to ask.
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A lot of / lots of work is to be done this week.
There are plenty of books on the shelf. I have plenty of time to do it Suppies of trees were washed away.
We have had a large quantity of /large quantities of rain this summer. Lare quantities of fish have been caught recently.
1）a lot 名词词组表示“大量，很多”/做副词词组表示“很多，非常，相当”/做程度状语修饰比较急 I have a lot to do today. (很多事 名词）
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he helped me a lot （副词 很多）
I like this picture quite a lot (副词 非常）
I’m feeling a lot better now (程度状语修饰比较级） 我现在感觉好多了
2）large quantities of + 不可数名词/可数名词复数 ，谓语用复数 Large quantities of water are needed every day. (修饰不可数n） There are quantities of flowers in garden.（修饰可数n 复数）
四、many a /an + 单数可数名词 也表示许多，这个短语作主语时谓语用单数
Many a girl in our class has learned to swim
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Many a book was translated into English.(许多书被翻译为英语）
许多的鸟已经飞去南方.
很多旅游者都是来自世界各地.
大量的牛奶都过期了.
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池子里有很多的水.
秋天里,许多树叶已经从树上掉了下来.
“许多”的英语表达方法-归纳总结
