表示倍数的句型归纳：
①倍数+as+形容词或副词原级+as.如：
This bridge is three times as long as that one.这座桥是那座桥的三倍长.
②倍数+形容词或副词的比较级+than.如：
This bridge is three times longer than that one.这座桥是那座桥的三倍长.
③倍数+the size / length / weight...+ of+比较对象.如：
This bridge is three times the length of that one.这座桥是那座桥的三倍长.
④倍数+what引导的从句.如：
The college is twice what it was 5 years ago.这所大学是它五年前的两倍大.
