Third conditional exercises

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Exercises with answers on the third conditional sentences (type 3) for intermediate - advanced levels.

Third conditional Exercise 3 Complete a letter.

See also:

Conditional sentences (all types) Exercises, PDF worksheets and grammar rules with examples.

PDF worksheets

Printable exercises with answers on the third conditional sentences to download for free.

Third conditional exercise 1 (PDF)

Key with answers 1

• Rewrite sentences:
  You weren't lucky. You didn't win. - If you had been lucky, you ___ .

Third conditional exercise 2 (PDF)

Key with answers 2

• Complete sentences:
  I learnt English. But if I ___ English, I ___ Spanish. (not learn | study)

Third conditional exercise 3 (PDF)

Key with answers 3

• Correct mistakes:
  If you had rung us, we would come in time. - ___

Third conditional exercise 4 (PDF)

Key with answers 4

• Choose correct forms:
  What would you have chosen if you ___ such choices? (had, had had)

Third conditional exercise 5 (PDF)

Key with answers 5

• Make sentences:
  I wouldn't have gone there ___ . (know | I | if | about it)

More PDF worksheets:

English grammar tests PDF Marked printable tests to download for free.

PDF grammar rules:

English grammar All PDF grammar rules on this website.

Examples and grammar rules

The third conditional sentences always refer to the past. We speculate about situations that happened or did not happen in the past.
If I had won a million, I would have started a business of my own. (But I didn't win anything.)
If he had met her, he would have told her. (Unfortunately, he didn't meet her.)
If we hadn't practised, we wouldn't have won the match. (But we practised and won.)

We use the past perfect in the if clause and perfect infinitive (have + past participle) in the main clause.

Other forms

Apart from the basic form of the third conditional sentences, we can use other verb forms in English.
We didn't save any money. If we had saved some money, we might have bought the house.
She wasn't there and I wasn't sitting next to her. But if she had been there, I would have been sitting next to her.
I was looking at the trees when I fell off the bike. If I hadn't been looking at the trees, I wouldn' t have fallen off the bike.

Inverted conditionals

We can also make conditional sentences by changing the word order in the if clause.
Had he booked the hotel room, he wouln't have slept at the camp. (If he had booked...)

This form is less common, quite formal and is mostly used in writing.

Note

If is the most frequent expression in the if clauses, but other expressions are also possible: even if, provided (that), on condition (that), in case.
I would have left even if he had not wanted to.
You could have had your birthday party provided that you had not been so naughty.
We would have sold you the bike on condition you had paid in cash.
You should have taken a dictionary with you in case you had forgotten some words.

Third conditional PDF Printable grammar rules with examples.

All these materials are written for students and teachers of English as a foreign language.