I want to buy she a cake这句英语错误在哪儿?原因是什么?

问题描述:

I want to buy she a cake这句英语错误在哪儿?原因是什么?

I want to buy her a cake.
这是一个双宾语结构,buy是一个能接双宾语的及物动词,buy 后先是间接宾语——she 要变成her,a cake 是直接宾语.