todo和doing用法

Question

我们知道todo表目的方法

但是如果主语是job、goal、或者ability的时候还能够跟todo么？我看解释上说他们不能发出这种主动的动作

那是否后面要跟for doing 或者of doing？

PS：我好像看见过（my job is to以及a goal to do的句子呢！）

Answer 1

My job is to teach English.
= My job is teaching English.
= To teach English is my job.
=Teaching English is my job.
这里的doing和to do是充当表语的，解释主语，可与主语换位。

A goal to do（这个to do是定语的，一般不用doing换的）追问

但是goal能发出主动的动作吗？

追答

The goal is to do all that without leaving behind an
aid-dependant society.
是这个吧。
to do也是解释的。
the goal to do确实不常见的。