一.A is three times as long as B
二.基数词+times+（形容词副词）比较级+than
A is three times longer than B
三.基数词（几倍数）+times+名词+of
The earth is 49 times the size of the moon
一.A is three times as long as B
二.基数词+times+（形容词副词）比较级+than
A is three times longer than B
三.基数词（几倍数）+times+名词+of
The earth is 49 times the size of the moon