Zero conditional talks about things that are generally true. We use it for facts, rules, and routines. In this lesson, you will learn the pattern and see how it works in clear everyday examples.
Examples
Example 1
IncorrectIf people will drive too fast, accidents happen more often.
BetterIf people drive too fast, accidents happen more often.
The zero conditional is used because the sentence describes a general truth that always applies.
Example 2
IncorrectIf water reaches 100 degrees, it will boil.
BetterIf water reaches 100 degrees, it boils.
The present simple is used in both clauses to express a scientific fact.
How It Works
Meaning
The zero conditional is used to express general truths, scientific facts, and situations that are always true. It describes a cause-and-effect relationship where both clauses use the present simple tense.
Formation: if + present simple, present simple.
This structure is crucial at the B2 level for expressing certainty and factual information in both written and spoken English.
Use it when
- Describing scientific facts or laws (e.g., If you heat water to 100°C, it boils).
- Stating general truths (e.g., If it rains, the ground gets wet).
- Explaining routines or habits (e.g., If I wake up early, I drink coffee).
- Writing or speaking about cause-and-effect relationships in exams or reports.
See it
Quick rules
- Use present simple in both clauses.
- Ensure the sentence describes a general truth or routine.
- Avoid using 'will' unless referring to a specific future event.
- Check if the sentence describes something that always happens under the given condition.
Common Mistakes
Common problem 1
using future forms in a sentence that states a general truth
WeakIf students revise regularly, they will remember more vocabulary.
StrongIf students revise regularly, they remember more vocabulary.
Fix: Use present simple in both halves of a zero conditional sentence to indicate a general truth.
Common problem 2
using will when the sentence is a general truth
WeakIf people will eat too much sugar, they feel tired later.
StrongIf people eat too much sugar, they feel tired later.
Fix: Use present simple in both halves for zero conditional facts and routines.
Common problem 3
using zero conditional for one future possibility
WeakIf you study tonight, you pass the exam tomorrow.
StrongIf you study tonight, you will pass the exam tomorrow.
Fix: Use first conditional when you mean one real future result.
Practice Lab
Practice
First notice the right form. Then build it yourself. Then fix it in a full sentence.
Score: 0/3
Read for meaning first. If the meaning changes, the grammar usually has to change too.
1. Quick pick
Choose the stronger sentence for Zero conditional.
2. Build it
Put this Zero conditional sentence in the correct order.
Tap a chunk to move it down. Tap it again to send it back.
3. Final sort
Mark each sentence as correct or needing a fix.
If students revise regularly, they remember more vocabulary.
If students revise regularly, they will remember more vocabulary.
If you heat ice, it melts.
If you heat ice, it will melt.
Why It Matters
🎯 Why it matters: Mastering the zero conditional allows you to clearly express general truths and cause-and-effect relationships. This is crucial for effective communication in both spoken and written English, ensuring your intended meaning is understood in exams, professional settings, and daily interactions.
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