请英语好的朋友帮帮忙造3个句子,

A是B的三倍长.
1. A is three times longer than B.
2. A is three times as long as B.
3. A is three times the length of B.
Our school is twice bigger than yours.
我们学校比你们学校大两倍.
Asia is four times as large as Europe.
亚洲是欧洲的四倍大.(亚洲比欧洲大三倍)
The new building is three times the height of the old one.
这座新楼比那座旧楼高三倍.(新楼是旧楼的四倍高)