Zero Conditional

Zero Conditional

1. Function

   • Are situations that always happens.

2. Grammar

   • Positive = If + subject + present simple (do/does) + subject + present simple
   • Interrogative =Do/does + subject + present simple + If + subject + present simple?
   • Negative = If + subject + present simple (don't/doesn't) + subject +present simple

3. Examples

   • If she doesn't know the answer, she keeps silent.
   • Does air become lighter if it expands?
   • If you freeze water, it turns into ice.

4. Notes

   • We can replace "if" by "when".
   • It is not always necessary to place the condition at the beginning of the sentence, it can be reversed .

5. Palma González José Valente