The core idea — wishing the past had been different
Regret is one of the most universal human emotions. You did something you wish you hadn't. You didn't do something you wish you had. The moment has passed and cannot be changed — but you can express how you feel about it.
In English, when you want to express a wish or regret about something in the past — something that is now impossible to change — you use wish / if only + Past Perfect. The Past Perfect signals that you are looking back at a completed past situation and wishing it had been different.
Think of it as a window. You look through the window at the past and say: "I wish that had been different." The Past Perfect is the glass of that window — it marks the distance between where you are now and the past situation you are reflecting on.
The key structures
1. I wish + Past Perfect
I wish I had studied harder at school.
She wishes she had listened to her instincts.
He wishes he had not said those things.
2. If only + Past Perfect
If only is more emphatic than I wish — it expresses a stronger sense of regret or longing. The grammar is identical.
If only I had chosen a different career.
If only she had taken the doctor's advice.
If only someone had told me the truth.
3. I would rather + Past Perfect (expressing preference about another person's past actions)
I would rather you had told me the truth.
I would rather she hadn't come to the party.
The logic — wish expresses the OPPOSITE of reality
This is the most important thing to understand. When you say I wish I had studied harder, you are communicating that the reality was the opposite: you did NOT study hard enough. The wish always expresses the reverse of what actually happened.
Affirmative wishes (wishing something had happened)
Use an affirmative Past Perfect to express regret that something did NOT happen — you wish it had.
- I wish I had studied harder at school. (I didn't study hard enough.)
- If only she had taken the doctor's advice. (She didn't take it.)
- He wishes he had kept in touch with his old friends. (He didn't.)
- If only someone had told me the truth from the beginning. (Nobody did.)
- She wishes she had listened to her instincts. (She didn't listen.)
Negative wishes (wishing something had NOT happened)
Use a negative Past Perfect to express regret that something DID happen — you wish it hadn't.
I wish I hadn't invested all my savings in that company.
If only she hadn't missed the deadline.
- He wishes he hadn't said those things during the argument. (He did say them.)
- I wish I hadn't invested all my savings in that company. (I did invest them.)
- If only she hadn't missed the deadline — it cost her the contract. (She missed it.)
- I wish I hadn't quit my job before finding a new one. (I did quit.)
- I wish I hadn't spent all my money on things I didn't need. (I did spend it.)
Key signal words for this use
Common mistakes to watch out for
✗ I wish I studied harder at school.
✓ I wish I had studied harder at school.
When expressing a wish about the past — something that can no longer be changed — always use wish + Past Perfect. The Past Simple after wish expresses a wish about the present, not the past. I wish I studied harder implies you are studying now and wish you were studying more — not a regret about the past.
✗ I wish I would have studied harder.
✓ I wish I had studied harder.
Never use would have directly after wish. The structure is always wish + subject + had + past participle. Would have belongs in the result clause of a third conditional sentence — not after wish.
✗ I wish I had more money. (= present wish — I don't have enough money now)
Using Present Perfect: I wish I had had more money then.
✓ I wish I had saved more money when I was young. (= past regret — Past Perfect)
✓ I wish I had more money. (= present wish — Past Simple after wish)
The tense after wish signals the time of the wish: Past Simple = wish about the present; Past Perfect = regret about the past. Make sure you are using the right level of past for what you mean. If it happened and is over and cannot be changed, use the Past Perfect.
✗ I wish I had went there. · If only she had chose differently.
✓ I wish I had gone there. · If only she had chosen differently.
After had, always use the past participle — the third form of the verb. Common errors: go → gone (not went), choose → chosen (not chose), speak → spoken (not spoke), take → taken (not took). These are the same participles used with the Present Perfect.