First, read about first conditionals below. Then, when you are ready, try these first conditional practice exercises.
Using the first conditional

First conditionals talk about a possible future situation and its result.
If you go out, you'll have fun.
Careful! The first half looks like the present simple, but it's a possibility in the future.
We often use this form to make promises or threats, or to negotiate.
I'll buy you a present if I go on holiday. (promise)
I'll hit you if you do that again! (threat)
If you lend me £5, I'll buy you a drink later. (negotiation)
How to make the first conditional
If + present simple (for the future situation), will/won't + verb (for the result).
If you don't help me, I won't finish my work.
Things to remember:
- It doesn't matter if you say the situation or the result first.
I'll help you if you want = If you want, I'll help you. - You can use unless to mean if (you) don't.
I won't go shopping if I don't have time.
= I won't go shopping unless I have time.
First conditional: advanced points
You can use present simple, continuous or perfect to give the possible situation.
You can use any expression which talks about the future for the result.
A possible situation:
- If he works too hard ...
- If he's still working at midnight ...
- If he hasn't finished by midnight ...
... and its result:
- ... he's going to be tired.
- ... he might be tired tomorrow.
- ... please tell him to go home.
Now, test yourself with these first conditional practice exercises.