题目内容：

Lily is four years old.Her elder sister kitty is three times as old as Lily.How old will Lily be wh

优质解答

莉莉4岁,她姐姐是她年龄的3倍（12岁）.
as old as...和...一样大（年纪）
three times 三倍,若是大三倍则这么表达 three times older than...