同学你好，该知识点来自沪江网校《高中水平直达雅思7分【剑桥全能随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
1)倍数＋形容词／副词比较级＋than
【例如】
The girl is ten times cleverer than her brother.
2)倍数＋as+形容词／副词/(名词)＋as
【例如】
His apartment is three times as large as that of mine.
Americans eat( )as they actually need every day. (CET-4 1998,6)
A) twice as much protein
B) twice protein as much twice
C) twice protein as much
D) protein as twice much本题考查倍数的表达方法,正确形式应为：倍数＋as+形容词／副词/(名词)＋as,故答案为A.
3)倍数＋名词
【例如】
The sun is many times the size of the moon.
4)动词＋倍数
【例如】
The pants have shortened two times since they were bought.
5)动词+by+数词/百分比/倍数
【例如】
The landlord wanted to raise the rent by a third.
Between 1974 and 1997, the number of overseas visitors expanded
( )27%. (CET-4 2000,1)
A) by
B) for
C) to
D) in
本题考查动词+百分比的表达方法,正确的连接词为by,故答案为A.