大家对：A is n times(half)as large(much, many, long，tall) as B.句型比较熟悉，大多人也知道其含义是： A是B的n倍（一半）大(多、长、高)。如：

This airplane flies two times as fast as that one.

这架飞机的飞行速度比那一架快一倍。（这架飞机的飞行速度是那架的两倍。）

He has five times as many books as you.

他拥有的书是你的书的五倍。

He is twice as strong as he was.

他是从前两倍的那么强壮了。

但是，大家对：A is n times(half)as large(much, many, long，tall)again as B.句型见到的少，不要想当然地认为也是“A是B的n倍（一半）大(多、长、高)。”这个含义，其实，这个句型的含义和没有again句型含义相差十万八千里，多了一个again句型含义为：

A比B大(多、长、高)n倍(一半)。

请看经典例句：

These shoes cost me as much again as the last pair I bought.

买这双鞋比上次买的那双鞋多花了一倍的钱。

We have turned out half as much coal again as they.

我们出产的煤比他们多半倍。

My new house is half as large again as my old one.

我的新房子是我的旧房的1.5倍大。

The cost is about half as much again as it was two years ago.

现在的价格比两年前提高约一半。

Spending on health is half as much again as it was in 1998.

卫生保健方面的开销比1998年增长了一半。

Sherry is half as strong again as table wine.

雪利酒比佐餐酒酒劲强一半。

试比较：

A:

(1)We have a third as many students in our as we had last term.

我们班上的学生是上学期的三分之一。

(2)We have a third as many students again in our as we had last term.

我们班上的学生比上学期多了三分之一。

B:

(1)Houses cost a third as much again this year as they did five years ago.

(2)Houses cost one third more this year than they did five years ago.

今年的房价比五年前高了三分之一。