Pattern: If + Present Simple → will + V. Use when the condition can realistically be fulfilled in the future.
How it’s formed
- Condition (if‑clause): Present Simple — If it rains
- Main clause (result): will + V — I will stay at home
If it rains, I will stay at home.
If it rains, I will stay at home.
Clause order
You can swap the two parts. If the if‑clause comes first, use a comma.
If you study, you will pass.
You will pass if you study.
Negation and questions
- Negation: If he doesn’t call, I won’t go.
- Question: What will you do if it snows?
Other ways we use it
- Imperative in the result clause: If you feel tired, have a rest.
- can/may/might/should instead of will: If it’s late, we should take a taxi.
- With temporal conjunctions instead of if: when, as soon as, unless.
Common mistakes
| ❌ If it will rain, we will cancel. | ✅ If it rains, we will cancel. |
| ❌ I won’t come if he won’t call. | ✅ I won’t come if he doesn’t call. |
| ❌ Comma always: You will pass, if you study. | ✅ Comma only if the if‑clause comes first. |
More examples
If I have time, I will call you.
If I have time, I will call you.
If you achieve your goal, we will celebrate.
If you achieve your goal, we will celebrate.
If they are late, we will start without them.
If they are late, we will start without them.
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Structure: If + Present → will + V
Realistic, likely situations
No will after if/when/unless