When you say "I wish..." you are talking about something that you want but probably will not happen, or you don't think will happen. Like I wish I had a million dollars. (It is different from the word hope. If you hope for something, it means you think it could be possible.)Here are some examples:
Examples:
I wish I had a new job.Notice you use the past tense verb in the clause after wish. But when you use a be verb in the clause, always use were.
Teri wishes she knew Tom Cruise.
Jim wishes Karen liked to cook.
The boys wish they could go to Hawaii.
Examples:
I wish I were the president.
She wishes she were here now.
We wish we were at home.