Who's the man in blue?那个穿蓝色衣服的人是谁?
The man in blue is my father.那个穿蓝色衣服的是我爸爸.
Which one is your father?哪个是你爸爸?
The man in blue is my father.穿蓝色衣服那个.
Who is your father?你爸是谁?
The man in blue is my father.穿蓝色衣服的那个.
其实我觉得 后两个问题用 My father is the man in blue.来回答感觉更顺