英语作文人工批改：He will make the children a good teacher如何理解

有这样一个句子：

He will make the children a good teacher.

句中为什么不用复数 good teachers 呢？这个句子如何理解？

1. He will make the children a good teacher

   =He will make a good teacher for the children.

   他会成为孩子们的好老师。

2. 属于主 + 谓 + 双宾 句型的 变化形式

   He will buy me a computer.

  = He will buy a computer for me.