if
1
used to say that something happening, existing, etc. depends on another thing happening, existing, etc.
- I will go to the party if I finish my homework on time.
- I will lend you my umbrella if it starts raining.
- If he doesn't catch the bus, he will be late for school.
- We can go for a walk if you want to.
- We can go to the park if the weather is nice.
2
used to express one's opinion