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 (374 votes)

Hello Mouha++,

Both sentences are grammatically correct. Note that these are examples of subject questions in which the question word (what) is the subject of the verb. You could also make object questions:

What does the usher do if we arrive late at the cinema?

What will the usher do if we arrive late at the cinema?




The LearnEnglish Team

Submitted by Deviljin on Sat, 11/04/2020 - 15:27

Hello Teachers. Which one is correct: 1. If you are going to market, bring me a pen. 2. If you go to market, bring me a pen. If both are correct, what is the difference in meaning. 2nd boubt: My friend told me that, in Ist conditional, we can use any tense in condition/result clause as the requirement. It this correct.

Hello Deviljin

Both of those are grammatically correct. The exact meaning depends on the context, as the continuous aspect (here 'are going' is continuous) can express many different meanings. If you follow the link, you'll see some examples.

Your friend is right in thinking that many different tenses are possible with 'if', but I'm not sure I'd say any tense works anywhere. If you have any other specific sentences you want to ask about, please feel free.

All the best


The LearnEnglish Team

Submitted by Swati on Fri, 10/04/2020 - 12:27

Hi, my query is why this answer is wrong? You don't need to print your tickets as long as you'll have the email. I used first conditional structure. Plz help and clarify my doubt why the answer is 'you have the email' not you'll have the email.

Hello Swati,

As long as performs a similar function to if in this structure, and it is followed by a present form, just as in the if-clause of a first conditional. If you want to use a modal verb like will then it should be in the other clause:

You won't need to print your tickets as long as you have the email.



The LearnEnglish Team

Thanks Peter M sir. I am glad that I got the response and it's cleared my doubt. My English is not so good but is site is very helpful. Thanks

Submitted by Gloria Pérez on Fri, 03/04/2020 - 22:39

Thank you very much Kirk. It helps me a lot ;-)!

Submitted by Lal on Fri, 03/04/2020 - 06:47

Hello Sir Are these sentences grammatically correct? When I have finished work, I will call you. When I finish work I will call you. Thank you. Regards Lal
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Submitted by Kirk Moore on Fri, 03/04/2020 - 11:38

In reply to by Lal


Hello Lal

Yes, both are correct (well done!) and they mean the same thing.

All the best


The LearnEnglish Team


Submitted by adawi on Thu, 02/04/2020 - 11:05

Hello, I have a question regarding the second conditional. I wonder whether it is grammatically OK to say I was instead of I were? Thanks.