1 It’s a pity that you didn’t tell us that you were leaving. (WISH)
-> I wish you had told us that you were leaving.
2 I regret not going to university when I was younger. (GONE)
-> I wish I had gone to university when I was younger.
3 I’ve always wanted to have the ability to speak a foreign language really well. (COULD)
-> I wish I could speak a foreign language really well.
4 It’s a real shame we didn’t take any photos at that amazing party. (ONLY)
-> If only we had taken photos at that amazing party.