Zero Conditional in English and How to use it

by | Jul 2, 2025 | English Grammar

Conditional sentences in English describe situation and their results. The zero conditional is the simplest form. It is used to talk about facts, general truths, or things that are always true. 

If you are learning English, understanding the zero conditional helps you describe situations that happen regularly or naturally.

The zero conditional is a sentence structure used to talk about situations that are always true when something happens. It describes real and possible conditions that lead to predictable results. 

Example:

  • If you heat water to 100 °C, it boils.

The condition (you heat water to 100 °C) always leads to the result (it boils).

Structure of Zero Conditional Sentences

Zero conditional sentences follow this structure:

If + Present Simple, Present Simple

This means both the condition and the result use the present simple tense.

Structure 

If + subject + present verb, subject + present verb.

Examples:

  • If it rains, the ground gets wet.
  • If you mix red and blue, you get purple.

You can also reverse the clauses:

  • The ground gets wet if it rains.

Tense Used in Zero Conditional

Both parts of the zero conditional sentence use the present simple tense. Even though you are talking about things that may happen in the future or regularly, the present simple is used for facts. 

Examples:

  • If people don’t drink water, they get dehydrated.
  • If you touch fire, it burns.

Frequently Asked Questions

What is zero conditional in English?

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