If I’m late this morning, don’t wait for me.
If I don’t see you tomorrow, I’ll phone you.
Do you mind if I close the window?
When I get up in the morning, I usually drink a cup of coffee.
Have something to eat.
If you don’t eat now, you’ll be hungry later.
John is still at school. When he leaves school, he wants to go to university.
Be careful. If you aren’t careful, you’ll fall.