Conditional Sentences: Types and Examples

Conditional sentences connect a condition with a result. The verb forms help express general situations, real possibilities or hypothetical alternatives.

Conditional sentences are 'IF-THEN' sentences. They show cause and effect, possibilities, and dreams! There are 4 types, from real facts to impossible wishes. 🌈

Zero Conditional: Facts & Always True

Use this for scientific facts and things that are ALWAYS true. If A happens, B ALWAYS happens.

Formula: If + present simple, present simple

If you heat water, it boils.

💡 Scientific fact - always true!

If it rains, the grass gets wet.

💡 Natural result - always happens

If you mix red and blue, you get purple.

💡 Fact about colors

First Conditional: Real Possibilities

Use this for REAL future possibilities. Things that might actually happen!

Formula: If + present simple, will + base verb

If it rains tomorrow, I will take an umbrella.

💡 Real possibility - might rain!

If you study hard, you will pass the exam.

💡 Likely result of studying

If she calls, I will answer.

💡 Real future possibility

Second Conditional: Unreal/Imaginary Present

Use this for imaginary situations or things UNLIKELY to happen. Dreams and wishes!

Formula: If + past simple, would + base verb

If I had wings, I would fly to school.

💡 Imaginary - I don't have wings!

If I won the lottery, I would buy a house.

💡 Unlikely but dreaming!

If I were you, I would study more.

💡 Giving advice (use "were" for all subjects)

Third Conditional: Unreal Past (Regrets)

Use this for imagining DIFFERENT PAST outcomes. Things that DIDN'T happen. Often for regrets!

Formula: If + past perfect, would have + past participle

If I had studied, I would have passed.

💡 Regret: I didn't study, so I didn't pass

If she had left earlier, she would have caught the bus.

💡 She didn't leave early, missed the bus

If they had invited me, I would have come.

💡 They didn't invite me, so I didn't come

Quick Summary Table

Type	If Clause	Result Clause	Used For
Zero	Present Simple	Present Simple	Facts, always true
First	Present Simple	Will + verb	Real future possibilities
Second	Past Simple	Would + verb	Imaginary present, unlikely
Third	Past Perfect	Would have + past participle	Imaginary past, regrets

Continue learning

Future Simple with Will: Rules and Examples · Past Perfect: Rules and Examples

Practice in the 30 Days English Challenge: Day 8: Would, Should, Could and Might: Uses and Examples · Day 22: English Conjunctions: Connect Ideas with And, But and Because · Day 28: English Conditionals: Real and Imagined Situations