2. First conditional
If + present simple + future will
If I sleep less I will be tired on the morning
3. If + past simple revision
If I drink this. If he doesn’t give me a present.
Verb to be
Am /is/ are
Am not/ isn’t /aren’t
There is/ there are
There isn’t /there aren’t
Normal verb+3rd person
Negative
don’t /doesn’t+ infinitive