Zero Conditional

Zero Conditional

1. structure

   • If + subject + present simple, subject + present simple

2. Uses

   • True facts
   • Scientific laws
   • General truths
   • Give instructions

3. In this conditional

   • We can substitute
     • if by when
       • without altering the meaning of the sentence.

4. Examples

   • If you heat water to 100 degrees, it boils.
   • If public transport is efficient, people stop using their cars.
   • If you cross the line, you are in our country

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