1. Overview:
Zero conditionals are used to talk about things that are always true. They describe facts, general truths, or situations that are always the same. They are often used with "if" and the present simple tense.
Structure:
If + present simple + present simple
2. Cases of Usage:
Case 1: To express general truths.
Example: If you heat ice, it melts.
Case 2: To explain scientific facts.
Example: If it rains, the ground gets wet.
Case 3: To describe habits or routines.
Example: If I eat breakfast, I feel good.
3. Exceptions or Things to Pay Attention To:
Zero conditionals only use the present simple tense. Do not use other tenses like past or future.
Example: Incorrect: If I will go outside, I see the stars. (Correct: If I go outside, I see the stars.)
4. Additional Notes:
Remember, zero conditionals are not about possibilities or future events. They are about facts. A common mistake is to mix zero conditionals with first conditionals, which talk about possible future situations.