37.Expressing Regret in English

I wish I had come to your party!

I wish I had worked harder.

If only I hadn't eaten so much.

If only I had driven more carefully.

I should have (not) + Past Participle

I should have come to your party.

I should have worked harder.

I shouldn't have eaten so much.

I should have driven more carefully.

I regret +Noun/V-ing

I regret not coming to your party.

I regret not working harder.

I regret eating so much.

I regret leaving you alone.

I regret the things I didn't do when I had the chance.