请问如何用英语的虚拟语气说“即使不要求我们也会这么做”

I would also do it even if I had not been asked.

如果是讲现在或者将来的事情，是We would do so even if we were not asked to.
如果是讲过去的事情，是We would have done so even if we had not been asked to.

I would also do it even if I had not been asked. correct

we would have done that even if we were not asked to.

We would do it even if you didn't ask