to whom you go when in trouble这句为啥加to

to whom you go when in trouble这句为啥加to

..求助的意思原本的语序是 You go to whom when in trouble.
go to 是向，
但是这里是为了强调：当你有麻烦时你会向谁求助的对象

口语习惯吧

dear editer: i am asked to do a survey "whom do you turn to when in trouble?".and the result is as follows: 58％ of the students asked said they would turn to their friends or classmates,because they are at the same age, and they are easy to talk with and easily understanding deeply each other .30% said they would turn to their teachers and parents,because they love them ,protect them and they are believed in and experenced .only 12% said they would turn to nobody .because they are hard to talk with anybody.such are what the students are thinking when they are in trouble .what advise you can give us?what should we do to help the students? sincerely yours, lihua 2011.12.5