第1个回答 2010-03-02
girls are changing their appearance when they are 18, change不用被动语态,还有就是这句话意译比较好,个人觉得去掉appearance
第2个回答 2010-03-02
介词应该用 with
时态错了
Girls have been changed with their apperarance by the age of 18.
楼上的别乱说 ,change是及物动词 ,可用被动语态
change sb with sth本回答被提问者采纳
第3个回答 2010-03-02
Girls get prettier at 18 .
第4个回答 2010-03-02
The eighteen changes of a grown woman.