buy sb sth 双宾语意思是给某人买东西。某人是买东西的对象, 也就是buy发出的对象。某物是买什么东西。类似单词: make, draw所以这里的somebody应该是宾语，不是主语。His father bought her a car.=His father bought a car for him.他爸爸给他买了一辆车。
