I don't speak Chinese and I regret that.
→ I wish I spoke Chinese
Tom didn't work hard last year and now he's sorry.
→ Tom wishes he had worked hard
(or harder) last year.
The children are shouting and I'd like them to stop.
→ I wish the children would stop shouting.
Caroline isn't rich enough to buy an apartment otherwise she would do that.
→ If Caroline were rich enough she would buy
My car broke down on Sunday and I regret that that happened.
→ I wish my car hadn't broken down on Sunday.
In your position I think I would have a check-up once a year.
→ If I were you I'd have a check-up once a year.
It would be better if it stopped raining.
→ I wish it would stop raining.
I don't have any cake to offer you and I'm sorry about that .
I wish I had some cake to offer you.