First conditional sentences are used to describe possible or likely future events. Unlike zero conditionals, which express universal truths or rules, first conditionals talk about realistic scenarios that may happen. For this reason, they are sometimes called “realistic conditional sentences.”
⚠️ Be careful: First conditional sentences are not for absolute truths—they are for situations that are possible in the future.
Grammar Rules for First Conditional Sentences
There are four possible structures for first conditional sentences:
- If + present simple, present simple
- If + present simple, future simple (will + verb)
- Present simple + if + present simple
- Future simple + if + present simple
Examples of First Conditional Sentences
- If it rains, I get wet. (present simple → present simple)
- If it rains, I will buy an umbrella. (present simple → future simple)
- I stay indoors if it rains. (present simple → present simple)
- I won’t go to work if it rains. (future simple → if + present simple)
As you can see, all four structures are valid and can be used depending on the context.
Practice First Conditional Sentences
Try creating your own sentences using these templates:
- If I ________, I ________.
- I will ________ if ________.
- If ________, I will ________.
Practicing these sentences will help you talk about realistic future possibilities clearly.
Frequently Asked Questions About First Conditional Sentences
Q: What are first conditional sentences?
They are sentences used to talk about possible or likely future events, often called realistic conditional sentences.
Q: How are they formed?
- Pattern 1: If + present simple, present simple
- Pattern 2: If + present simple, future simple
- Pattern 3: Present simple + if + present simple
- Pattern 4: Future simple + if + present simple
Q: How are they different from zero conditional sentences?
- Zero conditional: describes universal truths or rules (If you heat water, it boils).
- First conditional: describes possible future events (If it rains tomorrow, I will take an umbrella).
Final Thoughts
First conditional sentences are essential for expressing possible events and realistic future outcomes. By practicing with examples and templates, you can communicate hypothetical but likely situations effectively.
Don’t forget to check the Grammar Page for more English grammar lessons.
