Conditionals

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Conditionals

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.

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.

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

First Conditional

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.

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

Second Conditional

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.

Third conditional

We make the third conditional by using the past perfect after 'if' and then 'would have' and the past participle in the second part of the sentence:

if + past perfect, ...would + have + past participle

It talks about the past. It's used to describe a situation that didn't happen, and to imagine the result of this situation.

Third Conditional

If she had studied, she would have passed the exam (but, really we know she didn't study and so she didn't pass)

If I hadn't eaten so much, I wouldn't have felt sick (but I did eat a lot, and so I did feel sick).

If we had taken a taxi, we wouldn't have missed the plane