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一、数量词的正确用法
量词是表示人、事物或动作的单位的词（词组），有些量词（词组）可以表示确定的数量，如a cup of tea, two pieces of bread, a bar of soup等；有些量词（词组）则表示不确定的数量，如number, amount, quantity, few， little等, 这里我们着重讲解一下后者。学习时须记住它们各自的习惯搭配及所修饰的是可数名词还是不可数名词。
（1）只能修饰可数名词的有：a (large/ great/ good/ small) number of, many, a great/ good many, many more, quite a few, a good few等。
（2）只能修饰不可数名词的有：a large/ huge /great/ small amount of, huge amounts of, a great/ good deal of, much more, quite a little 等。
（3）既可修饰可数名词也可修饰不可数名词的有：a lot of =lots of, plenty of, a large quantity of =large quantities of等。
（4）“the number of+the +可数名词复数”和“the amount of + the +不可数名词”均意为“……的数量”。例如：
The number of the students in our school has risen by 20%.
我们学校学生的数量已增长了20%。
（5）a lot 和a great deal可以用作状语，而含number, quantity, amount 的词组则不可以。例如：
He’s spending a lot/ a great deal more time on English than before.
他在英语方面花费了比以往多得多的时间。
二、特定的数量词——数词的正确用法
数词分为基数词和序数词，这两类词相信同学们已经熟记于心，这里我们主要来看看在数词表达中同学们容易出错的两点。
1.倍数表达法
（1）可用句型“主语A+谓语+倍数（分数/百分数）+as+形容词/副词原级+as+比较对象B”。例如：
I have three times as many books as you.
我有比你多3倍的书。
We shall produce twice as many plays as we did in 2000.
我们将创作出比2000年多两倍的戏剧作品。
This room is twice as big as that one.
这间房是那间房的两倍大。
The money in my pocket is one third as much as yours.
我口袋里的钱是你的1/3。
（2）可用句型“主语A+谓语+倍数（分数/百分数）+the+度量名词（size,length, amount, height…）+of+比较对象B”。例如：
The big ball is ten times the size of the small ball.
大球是小球的10倍大。
The earth is 49 times the size of the moon.
地球是月球的49倍大。
The length of this rope is three times the length of that one.
这根绳子是那根绳子的3倍长。
（3）可用句型“主语A+谓语+倍数（分数/百分数）+what 从句”。例如：
The width of the road is twice what it was five years ago.
这条路的宽度是5年前的两倍。
（4） 可用句型“主语A+谓语+倍数（分数/百分数）+形容词/副词比较级+than+比较对象B”。例如：
He has three times more money than I have.
他有比我多3倍的钱。
The price is 8 percent higher this year than that of last year.
价格今年比去年高8%。
（5） 可用句型“主语A+谓语+形容词/副词比较级+than+比较对象B+by+倍数（分数/百分数）”。例如：
We have produced more cars this year than last year by twice.
我们今年已经生产了比去年多两倍的小汽车。
This line is longer than that one by two?鄄thirds.
这条线比那条线长2/3。
2．数字表达法
hundred, thousand, million, billion与数词连用表示确切数目时不能加-s，当上述词表示笼统的数目时，要加-s, 并与介词of连用。例如：millions of people, several/ many hundreds of kilometers，four thousand students, two hundred visitors。
量词是表示人、事物或动作的单位的词（词组），有些量词（词组）可以表示确定的数量，如a cup of tea, two pieces of bread, a bar of soup等；有些量词（词组）则表示不确定的数量，如number, amount, quantity, few， little等, 这里我们着重讲解一下后者。学习时须记住它们各自的习惯搭配及所修饰的是可数名词还是不可数名词。
（1）只能修饰可数名词的有：a (large/ great/ good/ small) number of, many, a great/ good many, many more, quite a few, a good few等。
（2）只能修饰不可数名词的有：a large/ huge /great/ small amount of, huge amounts of, a great/ good deal of, much more, quite a little 等。
（3）既可修饰可数名词也可修饰不可数名词的有：a lot of =lots of, plenty of, a large quantity of =large quantities of等。
（4）“the number of+the +可数名词复数”和“the amount of + the +不可数名词”均意为“……的数量”。例如：
The number of the students in our school has risen by 20%.
我们学校学生的数量已增长了20%。
（5）a lot 和a great deal可以用作状语，而含number, quantity, amount 的词组则不可以。例如：
He’s spending a lot/ a great deal more time on English than before.
他在英语方面花费了比以往多得多的时间。
二、特定的数量词——数词的正确用法
数词分为基数词和序数词，这两类词相信同学们已经熟记于心，这里我们主要来看看在数词表达中同学们容易出错的两点。
1.倍数表达法
（1）可用句型“主语A+谓语+倍数（分数/百分数）+as+形容词/副词原级+as+比较对象B”。例如：
I have three times as many books as you.
我有比你多3倍的书。
We shall produce twice as many plays as we did in 2000.
我们将创作出比2000年多两倍的戏剧作品。
This room is twice as big as that one.
这间房是那间房的两倍大。
The money in my pocket is one third as much as yours.
我口袋里的钱是你的1/3。
（2）可用句型“主语A+谓语+倍数（分数/百分数）+the+度量名词（size,length, amount, height…）+of+比较对象B”。例如：
The big ball is ten times the size of the small ball.
大球是小球的10倍大。
The earth is 49 times the size of the moon.
地球是月球的49倍大。
The length of this rope is three times the length of that one.
这根绳子是那根绳子的3倍长。
（3）可用句型“主语A+谓语+倍数（分数/百分数）+what 从句”。例如：
The width of the road is twice what it was five years ago.
这条路的宽度是5年前的两倍。
（4） 可用句型“主语A+谓语+倍数（分数/百分数）+形容词/副词比较级+than+比较对象B”。例如：
He has three times more money than I have.
他有比我多3倍的钱。
The price is 8 percent higher this year than that of last year.
价格今年比去年高8%。
（5） 可用句型“主语A+谓语+形容词/副词比较级+than+比较对象B+by+倍数（分数/百分数）”。例如：
We have produced more cars this year than last year by twice.
我们今年已经生产了比去年多两倍的小汽车。
This line is longer than that one by two?鄄thirds.
这条线比那条线长2/3。
2．数字表达法
hundred, thousand, million, billion与数词连用表示确切数目时不能加-s，当上述词表示笼统的数目时，要加-s, 并与介词of连用。例如：millions of people, several/ many hundreds of kilometers，four thousand students, two hundred visitors。