Updated on October 17, 2025

Zero Conditional

We use the Zero Conditional to talk about things that are always true or happen regularly. It’s used for facts, habits, rules, and general truths that do not change.

Table of Contents

Exercises

Explanation

Zero Conditional – facts, habits, and truths

Structure

If-clause

Main clause

If + Present Simple

Present Simple

Example:
If you touch fire, it burns.

Both parts of the sentence are in the Present Simple tense.

Examples

  • If you mix red and white, you get pink.

  • If it snows, the roads become slippery.

  • If people don’t sleep enough, they feel tired.

  • If I drink coffee late, I can’t sleep.

  • If dogs hear a noise, they bark.

When Do We Use the Zero Conditional?

 1. Facts and Science

  • If the sun goes down, it gets dark.

  • If you boil water, it turns into steam.

2. Daily Routines and Habits

  • If I have time in the morning, I read the news.

  • If we go to the gym, we feel better.

3. Rules and Instructions

  • If the light is green, you can cross the street.

  • If you open this app, the video starts playing.

Other Words Instead of if

Word

Meaning

Example

when

every time

When it rains, I stay at home.

whenever

each time

Whenever I see Anna, she smiles.

unless

if not

Unless you study, you don’t improve.

as soon as

immediately after

As soon as class ends, students leave.

In short

Use the Zero Conditional for facts, routines, and things that never change.
It shows what always happens when one thing happens.

Example:
If you exercise every day, you stay healthy.

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