“The Third Conditional”

Before we get started, it’s important to know the construction of the third conditional, because that will allow us to make our third conditional sentences. Its construction is “if + past perfect + would have (done).” I’ve put the word ‘done’ there simply as an example; in reality, we put a past participle after the word ‘have.’ For example:

~ would have eaten

~ would have seen

~ would have gone

Now let’s get to the heart of the matter: the theory behind the third conditional. We use the third conditional when we imagine something in the past that didn’t happen. There’s common ground shared with the second conditional, but the difference is that with the second conditional, we’re imagining general or future time. The third conditional is used solely to refer to the past. Let’s look at some examples to get an idea of what we’re working with:

~ If we had gone to Port Aventura last weekend, we would have had a good time.

~ If she had made soup, I would have eaten all of it.

~ If I had seen that film, I’m sure I would have liked it.

There you have it! If you’d like to practice what you have learned here, try out the practice exercise at the bottom of the page.

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