English grammar practice exercise, for intermediate learners.
In this exercise you will practise third conditional sentences.
Instructions: Put the words in brackets into the correct form to make third conditional sentences:
|Structure of the third conditional|
|If I'd (I had) known you were coming, I would have waited for you.||If she hadn't (had not) been ill, she would have gone to the cinema.||Would you have done it if you'd (you had) known earlier?|
|The third conditional - common mistakes|
|Common mistakes||Correct version||Why?|
||If I had asked him, he would have helped me.||In the if-clause we use the past perfect (had + past participle). We don't use 'would' or 'would have' in the if-clause.|
||If you had spoken to my mother, she would have told you where I was.||
The main clause has
would + have + past participle.