If the weather is nice on the weekend,
...
If I don't understand the teacher, ...
..
If I feel hungry late at night,
I will ...
If I get a sunburn,
...
If I get a low grade in your class, ...
...
If I am bored at home, ...
..
If a cashier gives me too much change, ...
...
If I travel next year, ....
...
If I meet my favorite movie star, ....
...
If I feel sick, ...
...
If I forget my homework, ...
...
If I can't sleep at night, ...
I will ...
If I get a good grade in English class, ...
..
If I meet a very beautiful girl / handsome boy, ...
...
If I feel sleepy during the day, ...
...
If I have a headache,
...
If I have a lot of money, ...
..
If I find a wallet full of money on the ground,
...