First Conditional Sentences

1. Use

It’s used to talk about things which the speaker thinks could easily come true in the future

2. Form

if clause main clause
Simple Present will-future
Modal + infinitive

3. Examples

if clause main clause
If I get a job, I will earn some money.
If you see Susan, tell her to call me.
If you are on time, we can see the early film.

The if-clause can be at the beginning or at the end of a sentence.

if clause main clause
If I get a job, will earn some money.


main clause if clause
will earn some money, If I get a job.

4. Zero Conditional and First Conditional

The zero conditional describes what happens in general whereas the first conditional describes a particular situation.

For example (zero conditional): If you touch fire, you get burned (here I’m talking about every time a person touches fire – the burning is a natural consequence of touching).

But (first conditional): If you the fire, you’ll get burned (here I’m talking about what will happen with this specific fire).

5. First Conditional and Second Conditional

The first conditional describes things that I think are likely to happen in the future, whereas the second conditional talks about things that I don’t think will really happen. It’s subjective; it depends on my point of view.

For example (first conditional): If he studies harder, he’ll pass the test (I think it’s possible he will study harder and so he’ll pass).

But (second conditional): If he studied harder, he would pass the exam (I think that he won’t study harder, or it’s very unlikely, and so he won’t pass).