Present / future time

These are wishes where you want to change a present/future state. These wishes use a paste tense form to express a feeling about the present (like a second conditional sentence).

• I wish I had a motorbike. (I don't have one now.)

• I wish you weren't leaving. (You are leaving.)

• I wish I knew the answer. (I don't know the answer.)

• I wish I was going on holiday with you next week. (I am not going.)

• I wish I could get a better job.

Past time

The verb form after wish is one stage further back in the past. These are wishes referring to a past event, which cannot be changed. Wishes about the past use a past perfect in the same way as a third conditional sentence. 

• I wish I hadn't eaten so much. 

• I wish I had brought an umbrella with me. (If I had brought an umbrella with me, it would have been better.)

• I wish we had left earlier.

This use of wish is common after if only to express regrets. 

Would

Would is used when the speaker wants somebody or something else to change,. It is often used to describe an annoying habit. This use with would is often used to describe an annoying habit. 

• I wish he would change his mind and marry Jane.

• I wish it would stop raining.

• I wish you wouldn't make such a mess. 

Hope

Wishes about simple future events are expressed with hope. The verb hope is usually followed by a present tense with a future meaning, especially in the first person. 

• I hope it doesn't (won't) rain tomorrow.

• I hope you (will) have a lovely time in Portugal (on your holiday next week).

In negative sentences, the negation is usually put with the verb that follows hope. Compare:

• I don't think/suppose/expect/believe/imagine she'll come.

BUT: 

• I hope she she won't come.

• I hope she doesn't dislike the flowers.