如题所述
1、修饰可名词：many、a number of、 a few、many a、several等。
many a 的意思相当于many , 但many a 后边接可数名词单数，如：
Many a student has such a question.许多同学有这样的疑问。
A number of students have passed the exam.许多学生都通过了考试。
Several days ago, I met him in the park.几天前我在公园里遇到了他。
2、修饰不可数名词：much、a great deal of、a large amount of等。
We can get a great deal of(a large amount of) information from internet.
我们可以从互联网上获得大量信息。
3、既可修饰可数名词,也可修饰不可数名词：a lot of (lots of ); plenty of; a large quantity of 等。
Plenty of the water is polluted.许多水都被污染了。
Plenty of the rivers are polluted.许多河都被污染了。
many a 的意思相当于many , 但many a 后边接可数名词单数，如：
Many a student has such a question.许多同学有这样的疑问。
A number of students have passed the exam.许多学生都通过了考试。
Several days ago, I met him in the park.几天前我在公园里遇到了他。
2、修饰不可数名词：much、a great deal of、a large amount of等。
We can get a great deal of(a large amount of) information from internet.
我们可以从互联网上获得大量信息。
3、既可修饰可数名词,也可修饰不可数名词：a lot of (lots of ); plenty of; a large quantity of 等。
Plenty of the water is polluted.许多水都被污染了。
Plenty of the rivers are polluted.许多河都被污染了。
温馨提示：答案为网友推荐，仅供参考
