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。本题是倍数表达的另外一种形式：倍数+比较级+than…。故C正确。