Both his younger brothers are in the army.
他的两个弟弟都在服兵役。
Both of them are pretty. / They are both pretty.
他们两个都漂亮。
He likes John and Mary both.
约翰和玛丽他都喜欢。
She plays both the piano and the guitar.
她既能弹钢琴又能弹吉他。
Both he and his father are doctors.
他父亲和他都是医生。