一个男孩牙疼，正在让医生给他治疗。

翻译：

The boy has a toothache, and the doctor is gaving him a treatment.

负责翻译

A boy toothache, is to allow doctors to give him treatment.
或者:
A boy toothache, is letting doctor treat for him.

A boy felt his tooth painful,and the doctor is helping.

The boy have a toothache, the doctor is gaving him a treatment.