Unit 12 (Let’s do an experiment)
Pupil’s book page 61 ex 2 (ask and answer)
The zero conditional
We can make a zero conditional sentence with two present simple verbs (one in the 'if clause' and one in the 'main clause'):
If you put metal in water, it sinks.
If + present simple, .... present simple.
This structure is used for talking about general truths — things which always happen under certain conditions.
This conditional is used when the result will always happen. .
If water reaches 100 degrees, it boils. (It is always true)
- If people eat too much, they get fat.
- If you touch a fire, you get burned.
- If they don't eat, they die