Many a student has such a question.許多同學(xué)有這樣的疑問。
A number of students have passed the exam.許多學(xué)生都通過了考試。
Several days ago, I met him in the park.幾天前我在公園里遇到了他。
2、修飾不可數(shù)名詞：much、a great deal of、a large amount of等。
We can get a great deal of(a large amount of) information from internet.我們可以從互聯(lián)網(wǎng)上獲得大量信息。
3、既可修飾可數(shù)名詞,也可修飾不可數(shù)名詞：a lot of (lots of ); plenty of; a large quantity of 等。
Plenty of the water is polluted.許多水都被污染了。
Plenty of the rivers are polluted.許多河都被污染了。
二、few、little;a few、a little的用法：
1、few 和a few 都修飾可數(shù)名詞。few意為“幾乎沒有”，表示否定;a few表示“有些、幾個”，表示肯定;quite a few=many(修飾可數(shù)名詞)表示“許多”。如：
I have eaten a few apples today.=I have eaten many apples today.
He has few friends.他幾乎沒有什么朋友。
2、little和a little都修飾不可數(shù)名詞。little意為“幾乎沒有幾個”，表示否定;a little表示“有些”。如：
I have little money.我?guī)缀跎頍o分文。
I have a little work to do.我有一些工作要做
quite a little=much(修飾不可數(shù)名詞)表示“許多。
三、a number of 與the number of的區(qū)別：
a number of 相當(dāng)于some，a few; a great/large number of相當(dāng)于many，quite a few;the number of指的`是“…的數(shù)量”。如：
The number of the students in our school is 5，000. 我們學(xué)校學(xué)生的數(shù)量是5000人。
A number of students have passed the exam.許多學(xué)生都通過了考試。
還有：
1.a good/great deal of+不可數(shù) v單三
a large/small sum of money v單三
large/small sums of money v單三
a large/small amount of 不可數(shù) v單三
large/small amounts of 不可數(shù) v單三
2.a number of 名詞復(fù)數(shù) v復(fù)數(shù)
numbers of 名詞復(fù)數(shù) v復(fù)數(shù)
the number of 名詞復(fù)數(shù) v單三
a good/great many +名詞復(fù)數(shù) v單三
a good/great many of +the/these/those/one's+名詞復(fù)數(shù) v單三
3.a variety of 名詞復(fù)數(shù) /不可數(shù)名詞 v單三
a supply of 名詞復(fù)數(shù) /不可數(shù)名詞 v單三
a quantity of 名詞復(fù)數(shù) /不可數(shù)名詞 v單三
a mass of 名詞復(fù)數(shù) /不可數(shù)名詞 v單三
a measure of 名詞復(fù)數(shù) /不可數(shù)名詞 v單三
measures of 名詞復(fù)數(shù) /不可數(shù)名詞 v復(fù)數(shù)
masses of 名詞復(fù)數(shù) /不可數(shù)名詞 v復(fù)數(shù)
supplies of 名詞復(fù)數(shù) /不可數(shù)名詞 v復(fù)數(shù)
quantities of 名詞復(fù)數(shù) /不可數(shù)名詞 v復(fù)數(shù)
varieties of 名詞復(fù)數(shù) /不可數(shù)名詞 v復(fù)數(shù)
plenty of 名詞復(fù)數(shù) v復(fù)數(shù)
plenty of 不可數(shù)名詞 v單三
表示程度的就很多了，一般形容詞和副詞都可以表示程度。
如：He is a good student!他是一個好學(xué)生(形容詞表示程度的)
He listens to the teacher carefully!他認(rèn)真的聽老師上課!(副詞表程度的)