Past Perfect

B2 Upper Intermediate
Third Conditional — Full Exploration

The third conditional imagines a different outcome for a past situation that cannot be changed.

+If I had taken that job, I would have moved to New York.
+If they hadn't invested wisely, they would have lost everything.
+She wouldn't have succeeded if she hadn't worked so hard.
✏️ Form: If + Past Perfect, would have + past participle
💡 Both could / might / should can replace would: "If he had asked, I could have helped."
Wish + Past Perfect — Regret

We use wish + Past Perfect to express regret about a past situation — something we want to have been different.

+I wish I had studied harder at university.
+She wishes she hadn't said that — it hurt him deeply.
+I wish we had left earlier — we missed the whole first half.
⚠️ Compare:
"I wish I studied harder." = I wish I studied harder now (present / ongoing regret).
"I wish I had studied harder." = Regret about a specific past situation that cannot be changed.
Mixed Conditionals

A mixed conditional combines a past condition with a present result — or a present condition with a past result.

+If I had taken that job, I would be in Tokyo now. (past condition → present result)
+If she were more organised, she wouldn't have missed the deadline. (present condition → past result)
💡 Mixed conditionals link different time frames. The most common type uses Past Perfect in the if-clause and would + base form in the result clause.
Should have / Could have / Would have

These past modal structures all use the Past Perfect pattern and express different attitudes about the past.

StructureMeaningExample
should havecriticism or regret — the right thing wasn't doneYou should have called me.
could haveunrealised possibility — it was possible but didn't happenI could have helped if you'd asked.
would havehypothetical past resultShe would have passed if she'd revised.
Quick Summary
StructureExample
Third conditionalIf I had known, I would have told you.
Wish + Past PerfectI wish I had taken that opportunity.
Mixed conditionalIf I had studied medicine, I would be a doctor now.
Should / could / would haveYou should have told me sooner.

Exercise 1 — True or False?

Read each statement. Choose True or False.

Exercise 2 — Multiple Choice

Choose the correct form to complete each sentence.

Exercise 3 — Matching

Match each sentence to the correct description.

Exercise 4 — Gap Fill

Choose the correct form from the dropdown.

Exercise 5 — Word Order

Click the words to build the sentence in the correct order.

Exercise 6 — Word Sort

Click a category box first, then click the sentence to place it there.

🔀 Third Conditional

😔 Wish + Past Perfect (regret)

🔄 Mixed Conditional

⚠️ Should / Could / Would have

Exercise 7 — Complete the Conversation

Choose the correct form to complete the conversation.

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