wish + __________ is used to express that we want a situation in the present (or future) to be different.
past simple
I wish I __________ (to speak) Italian.
(I don’t speak Italian)
I wish I spoke Italian.
I wish I __________ lie on a beach now.
(I’m sitting in the office)
I wish I were lying on a beach now.
I wish I __________ (to know) Charlie was coming. I __________ (to invite) Jane.
(I didn’t know it and did not invite Jane.)
I wish I had known Charlie was coming. I would have invited Jane.
wish + __________ is used to express a regret, or that we want a situation in the past to be different.
had + past participle
I wish they __________ (to come) on holiday with us.
(They didn’t come on holiday)
I wish they’d come on holiday with us.
I wish I __________ (to have) a big car.
(I don’t have a big car)
I wish I had a big car.
I wish I __________ (not / to say) that. I can see I’ve upset you. Sorry.
(I did say it; it would have been better if I had not said it.)
I wish I hadn’t said that. I can see I’ve upset you. Sorry.
wish + __________ is used to express that we want to be doing a different action in the present (or future).
past continuous
I wish it __________ (to rain) now.
I wish it wasn’t raining now.
It would be good if I knew how to use this DVD player.
Use wish ...
I wish I knew how to use this DVD player.
I wish I __________ (to eat) so much.
(I ate a lot)
I wish I hadn’t eaten so much.
It would be good if we had a bigger car.
Use wish ...
I wish we had a bigger car.
I wish I __________ (to study) harder at school.
(I was lazy at school)
I wish I had studied harder at school.