すでに起こったことを嘆いても無駄だの英語

There's no use crying over spilled milk.

It is no use crying over spilt milk.

This was something that happened necessarily.

to regret a past action

to continue regretting finished things

Regrets will not mend matters

It is no use indulging in vain regrets

That was an unexpected event.

What happened next was terrible.

This is something which must never happen.

There was worse to follow.

Just because you've had one bad experience doesn't mean that you have to give up.

I still couldn't imagine the things that would happen after this.

It is a pity that you should give up what you have carried so far.

What actually happened?

What followed was unpleasant.

Something wrong was about to happen.

the state or condition of feeling regretful due to things not going as one wishes

it was caused by an improbable concatenation of circumstances

oh, that happened eons ago

What followed was still worse.

It is not the less to be regretted because it is not be avoided.

There was something wrong―some trouble.

It happened completely by accident.

Don't do anything rash which you may repent of later.

They didn't really happen.

That's exactly what happened.

I will make amends for my past idleness.

That should not have happened.

No one knows how it came to pass.