Conditionals: third and mixed

Conditionals: third and mixed

Do you know how to use third conditionals and mixed conditionals? Test what you know with interactive exercises and read the explanation to help you.

Look at these examples to see how third and mixed conditionals are used.

We would have walked to the top of the mountain if the weather hadn't been so bad.
If we'd moved to Scotland when I was a child, I would have a Scottish accent now.
If she was really my friend, she wouldn't have lied to me.

Try this exercise to test your grammar.

Read the explanation to learn more.

Grammar explanation

Do you know how to use third and mixed conditionals?

Third conditionals and mixed conditionals

Conditionals describe the result of a certain condition. The if clause tells you the condition (If I hadn't been ill) and the main clause tells you the result (I would have gone to the party). The order of the clauses does not change the meaning.

If I hadn't been ill, I would have gone to the party.
I would have gone to the party if I hadn't been ill.

Conditional sentences are often divided into different types.

Third conditional

The third conditional is used to imagine a different past. We imagine a change in a past situation and the different result of that change.

If I had understood the instructions properly, I would have passed the exam.
We wouldn't have got lost if my phone hadn't run out of battery.

In third conditional sentences, the structure is usually: If + past perfect >> would have + past participle.

Mixed conditionals

We can use mixed conditionals when we imagine a past change with a result in the present or a present change with a result in the past.

1. Past/Present 

Here's a sentence imagining how a change in a past situation would have a result in the present.

If I hadn't got the job in Tokyo, I wouldn't be with my current partner.

So the structure is: If + past perfect >> would + infinitive.

2. Present/Past

Here's a sentence imagining how a different situation in the present would mean that the past was different as well.

It's really important. If it wasn't, I wouldn't have called you on your holiday.

And the structure is: If + past simple >> would have + past participle.

Do this exercise to test your grammar again.

Average: 4.3 (187 votes)

Hello Tony_M,

You're right, it is a bit of a mouthful! I'm not sure why Russell uses '...have been...' here, as it really refers to the present. Something like '...would have become...' or '...would have liked to be...' seem more logical as well as a bit less clumsy. However, when people are speaking freely they don't always produce standard patterns.

 

Peter

The LearnEnglish Team

Hello again Peter, 

Thank you very much. 🙏 🙏 🙏 

Are “would’ve become” and “would’ve liked to be” different?

To me they don’t mean the same thing: 

“would’ve become” indicates that the time when he could’ve become a footballer is in the past, and in the present this option is not available anymore. He made his decision a long time ago, and now he is a driver. -> “I used to say that if I wasn’t a driver, I would’ve become a footballer” (in the past before I was asked this question, essentially).

“would’ve liked to be” indicates his preferences in the past and in the present. -> “I used to say that if I wasn’t a driver, I would’ve liked to be a footballer (in the past, before the question and in the present when the question is being asked, but in both cases the situation is unreal because he became a driver and he is a driver when being asked the question).

In other words, “would’ve become” is a completed action anchored in the past, but “would’ve liked to be” is more flexible or stretched, if you will. So, “would’ve liked to be” is in the past and now, but in both cases it’s impossible/unreal because he became a driver, and he’s still one in the present. 

Is my understanding correct?

Hello again,

I wouldn't necessarily say that. Clearly, would have become describes something which can no longer be realised, as you say, but I think would have liked also suggests that the desire is anchored in the past. Otherwise, Russell would use a form like I have always wanted to be... or similar.

 

Peter

The LearnEnglish Team

Hello again, 

Thank you, Peter. 

I'm not sure that I understand the idea behind "I've always wanted to be..."

Wouldn't it be easier to use "I would be a footballer now" if he wanted to refer to a hypothetical present situation? -> If I hadn't become a driver, I would probably be a footballer now. 

Hello again Tony_M,

The phrases describe different things. I would be... is about the fact of being a footballer, whereas I've always wanted to be... is about emotion/desire, which seems closer to the original sense.

 

Peter

The LearnEnglish Team

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Submitted by MounirBr44 on Sat, 09/08/2025 - 13:22

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1-The third conditional (past / past):

Example: If I had contacted the seller directly, I wouldn't have had to pay a large amount to the middleman.

Form: If + past perfect (had+past participle) >> modal + present perfect (have/has+past participle).

The fact: I didn't contact the seller. The result: I payed a large amount.

2-The Mixed conditional

 a- (past / present):

Example: If I had watered the orange trees regularly, I would have a lot of fruit now.

Form: If + past perfect (had+past participle) >> modal + base.

Reality: I didn't water the orange trees. Result: Now, I haven't much fruits. 

3- The Mixed conditional 

b- (present / past)

Example: If the weather were beautiful, I would have gone out for a walk since the beginning of summer.

Form: If + past simple >> modal + present perfect.

Reality: The weather isn't better. Result:  I didn't go out for a walk. 

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Submitted by Tony_M on Thu, 07/08/2025 - 00:01

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Hello,

Molly’s been in New York for three years already, but due to the fact that she's turning down every job offer, she has to ask her parents to help her financially. All in all, it looks like Molly is happy, because if she wanted to change her life, she would’ve already done something that would’ve gotten her closer to financial independence.

Is it grammatically correct/idiomatic to use "would've already done" and "would've gotten" together? 

What can be used instead of "would've gotten" except for an infinitive? 

Hello Tony_M,

Yes, the perfect modal form is correct here.

 

You could use different modal verbs: could have, might have, should have etc.

As you say, you could use an infinitive instead of the that clause: ...done something to get her closer...a

You could also use a participle. Like infinitives, participles are non-finite verb forms which take their time reference from the context in which they appear: ...done something getting her closer...

 

Peter

The LearnEnglish Team

Hello again, 

Thank you very much, Peter. 

Would the simple past work?

  • If she wanted to change her life, she would’ve already done something that got her closer to financial independence.
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