问题
选择题
You’d better go there by train. The train ticket is __________the airplane ticket.
A．as cheap three times as
B．as three times cheap as
C．three times cheaper than
D．cheaper three times than
答案
答案：C
考查倍数表达.as +倍数+adj+as表示是……的几倍。倍数+形容词比较级+than，表示比……多几倍。根据题意，你最好乘火车去。火车票比飞机票便宜三倍。故选C。选B不符常理。