He asked his doctor to tell him whether his operation had been successful,but the doctor refused
.to do so这句话中为什么doctor后面加to tell him,而翻译是：他问医生他的手术是否成功,但医生拒绝告诉他.翻译起来感觉有点别扭,to tell him起什么作用,为什么这样用.