Zero Conditional

Facts and General Truths

Sections
Introduction

1. Definition & Core Meaning

Zero Conditional is used for facts, scientific truths, and habits.

Structure:
If + Present Simple, ... Present Simple

Examples:

  • "If you heat ice, it melts." (Science fact)
  • "If I am tired, I go to bed." (Habit)
  • "When it rains, the grass gets wet." ('When' can replace 'If')

What is it?
Facts and General Truths

2. Use Cases

  1. Scientific Truths: "If you heat ice, it melts."
  2. General Habits: "If I get home early, I go for a run."
  3. Common Knowns: "If you mix blue and yellow, you get green."
  4. Instructions: "If the light turns red, stop."

3. When to Use It (Time Expressions/Signals)

  • Whenever/Every time: Can be replaced with "When" or "Whenever" (When you heat ice...).
  • Always True: Used when the result is 100% certain and consistent.

[!NOTE]
Review the examples and rules closely to understand the context.

4. How to Use It (Rules)

  • Use Present Simple in BOTH parts.
  • Describes things that are ALWAYS true.
  • You can use "When" instead of "If".