I wish you'd use your head.
我希望你凡事多用用脑筋。
I may not like him, but I wish him no ill.
我可能不喜欢他，但我并不希望他倒运。
You may stay until morning, if you wish.
如果你愿意，你可以一直待到早晨。
If you wish really hard, maybe you'll get what you want.
心诚则灵。
You may come if you wish.
如果你愿意可以来。
Give my good wishes to the family.
请替我向全家致意。