Zero Conditional: General Truths
Use zero conditional for things that are always true — scientific facts and general rules. Form: if + present simple, present simple.
First Conditional: Real Future Possibilities
Use first conditional for real and possible situations in the future. Form: if + present simple, will + base verb.
Second Conditional: Unreal Present/Future
Use second conditional for imaginary or unlikely situations in the present or future. Form: if + past simple, would + base verb.
Third Conditional: Unreal Past
Use third conditional for imaginary situations in the past — things that didn't happen. Form: if + had + past participle, would have + past participle.
🎤 Practice Speaking
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Exercise 1 of 5
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Conditionals describe what happens if something else is true. The zero, first, second, and third conditionals cover facts, real futures, hypotheticals, and imaginary pasts.
Zero and First Conditional
Zero conditional (If + present, present) states facts: 'If you heat water, it boils.' First conditional (If + present, will + verb) describes real future possibilities: 'If it rains, I will stay home.' These are the workhorses of daily plans and warnings.
Second and Third Conditional
Second (If + past, would + verb) is hypothetical: 'If I had time, I would help.' Third (If + past perfect, would have + past participle) is unreal past: 'If I had studied, I would have passed.' These two let you talk about regrets and dreams, common in natural conversation.
Unless, In Case, and Mixing
'Unless' means 'if not': 'I'll go unless it rains.' 'In case' prepares for something. Sometimes real and unreal mix ('If you had taken the train, you will arrive by now'). Practice saying full conditional sentences aloud to make the patterns automatic.
Common Mistakes to Avoid
The classic error is wrong tense pairing ('If I will go' instead of 'If I go') and mixing first and second conditionals so the likelihood gets muddled. Learners also add 'will' inside the 'if' clause, use double conjunctions ('If because'), and confuse 'unless' with 'if not' in subtle cases. Keeping each conditional's fixed pairing (e.g. present + will, past + would) is what makes your hypotheticals clear to the listener.
Try This: A Quick Practice
Write and say one of each: zero ('If you heat water, it boils'), first ('If it rains, I will stay'), second ('If I had time, I would help'). Feel how the verb form signals how likely the situation is. Then start one with the result: 'I would help if I had time'. SpeakNow's conditionals exercise repeats full sentences aloud so the patterns stop needing conscious thought.
Frequently Asked Questions
What are the four types of conditional?▼
Zero (facts), first (real future), second (hypothetical present), third (unreal past). Each pairs a specific 'if' tense with a result tense.
What is the difference between first and second conditional?▼
First is a real future possibility ('If it rains, I will stay'). Second is imaginary ('If I were rich, I would travel'). The verb form signals how likely it is.
Can I start a conditional with the result?▼
Yes: 'I will stay home if it rains.' No comma when the 'if' clause comes second. SpeakNow drills both orders aloud.