定语从句翻译 1 写这本书的人是我的朋友 2 昨天上课的是哪位老师 3在弹钢琴的那位小女孩是谁
问题描述：
定语从句翻译 1 写这本书的人是我的朋友 2 昨天上课的是哪位老师 3在弹钢琴的那位小女孩是谁
答
1. The person who wrote the book is my friend.
2. Who is the teacher that gave lessons yesterday?
3. Who is the girl that is play the piano?