Conditionals: zero, first and second

Conditionals: zero, first and second

Do you know how to use the zero, first and second conditionals? Test what you know with interactive exercises and read the explanation to help you.

Look at these examples to see how zero, first and second conditionals are used.

If you freeze water, it becomes solid.
If it rains tomorrow, I'll take the car.
If I lived closer to the cinema, I would go more often.

Try this exercise to test your grammar.

Grammar test 1

Conditionals 1: Grammar test 1

Read the explanation to learn more.

Grammar explanation

Conditionals describe the result of a certain condition. The if clause tells you the condition (If you study hard) and the main clause tells you the result (you will pass your exams). The order of the clauses does not change the meaning.

If you study hard, you will pass your exams.
You will pass your exams if you study hard.

Conditional sentences are often divided into different types.

Zero conditional

We use the zero conditional to talk about things that are generally true, especially for laws and rules.

If I drink too much coffee, I can't sleep at night.
Ice melts if you heat it.
When the sun goes down, it gets dark.

The structure is: if/when + present simple >> present simple.

First conditional

We use the first conditional when we talk about future situations we believe are real or possible.

If it doesn't rain tomorrow, we'll go to the beach.
Arsenal will be top of the league if they win.
When I finish work, I'll call you.

In first conditional sentences, the structure is usually: if/when + present simple >> will + infinitive. 

It is also common to use this structure with unless, as long as, as soon as or in case instead of if.

I'll leave as soon as the babysitter arrives.
I don't want to stay in London unless I get a well-paid job.
I'll give you a key in case I'm not at home.
You can go to the party, as long as you're back by midnight.

Second conditional

The second conditional is used to imagine present or future situations that are impossible or unlikely in reality.

If we had a garden, we could have a cat.
If I won a lot of money, I'd buy a big house in the country.
I wouldn't worry if I were you.

The structure is usually: if + past simple >> + would + infinitive. 

When if is followed by the verb be, it is grammatically correct to say if I were, if he were, if she were and if it were. However, it is also common to hear these structures with was, especially in the he/she form.

If I were you, I wouldn't mention it.
If she was prime minister, she would invest more money in schools.
He would travel more if he was younger.

Do this exercise to test your grammar again.

Grammar test 2

Conditionals 1: Grammar test 2

Language level

Average: 4.1 (373 votes)
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Submitted by Amir__760__ on Tue, 09/05/2023 - 16:59


Hello support team
I hope you are doing well.
Which of the sentences below is grammatically correct?

She seems as if she had seen a ghost.

She seems as if she saw a ghost.

Thank you

Hi Amir__760__,

Thanks! Hope you are doing fine as well.

Sentence 1 uses the past perfect ("had seen"), which should be used when the action happened before another past event. Sentence 1 does not mention any other past event, so there is no reason to use the past perfect and it is incorrect. However, "She seemed as if she had seen a ghost" is correct.

Sentence 2 is fine. However, the speaker's use of the present simple ("seems") shows that the action ("saw a ghost") probably happened just moments ago, it would be good to use the present perfect ("She seems as if she's seen a ghost"). Using the past simple ("saw") refers to a defined past moment or time, but if the event has only just happened then the present perfect would be preferred. 

I hope that helps.


Submitted by OstapBen on Tue, 02/05/2023 - 12:03


"Don't talk to me as if I were a child".
Please help me to understand is it "a mixture of the first and second type of conditional sentences" or "the verbal construction "as if" requires only the past tense after itself", or something else?

If a mixture of the first and second types of conditional sentences exists, then please send me a link to the material where this is clearly described

Hello OstapBen,

The structure here is an imperative followed by 'as if' plus a clause. 'as if' is being used to speak of an imaginary situation and so we use a past form to show that it is imaginary.

Hope that makes sense.

All the best,
LearnEnglish team

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Submitted by Ahmed Imam on Fri, 21/04/2023 - 11:02


Hello Team. Could you please tell me if the following sentence is correct or not? Why? I can't find anything wrong, although I met it in a "find the mistake exercise."
- When you arrive too late, you are not allowed to take the exam because they don’t accept late enrolment.
Thank you.

Hi Ahmed Imam,

I would prefer to use "If" instead of "When" here, since I assume it is talking about one particular occasion (i.e., a particular upcoming exam).

However, "When" is fine if you are talking about a repeated situation (i.e., exams in general), or every time that this occurs. It's possible that this sentence is about that, but to me it seems more likely to be about a particular exam.


LearnEnglish team

Profile picture for user Ahmed Imam

Submitted by Ahmed Imam on Tue, 18/04/2023 - 20:21


Hello. Could you please tell me whether the following sentence is correct or not? Why?
- Had I enough money, I’d buy a car.
Thank you.

Hello Ahmed Imam,

Yes, that is correct. It's possible to use inversion instead of 'if' to express a second conditional idea, though it's rather formal, so it's not used very often in writing and hardly ever in speaking.

Soon we'll be publishing a C1 grammar section and there will be a page called 'Inversion' where you can read more about this. I'll try to remember to let you know once it's published.

All the best,
LearnEnglish team