Conditionals

Zero, first and second conditional

If people don’t drink water, they get dehydrated.

If I had a million dollars, I would buy a house.

If we save enough money, we’ll travel to Japan.

If she studies hard, she’ll pass the exam.

If a dog barks, it usually wants attention.

If we lived by the beach, we would swim every day.

Conditional clauses

Consist of two parts: the if-clause (hypothesis) and the main clause (result).

When the if-clause comes before the main clause, the two clauses are separated with a comma (,).

When the main clause comes before the if-clause NO comma (,) is needed.

If you go to the gym, I'll come with you.

I'll come with you if you go to the gym.

If there is enough time, we will play football in the park.

If I were you, I wouldn't eat so much junk food.

If you eat too much, you gain weight.

If we had a net, we could play volleyball.

If he loses weight, I'll buy him a new phone.

If you mix red and blue, you get purple.

Unless

• Means if not, except if.
• We can use unless with any type of conditional sentence.

Unless you water plants, they die.

She won’t succeed unless she works harder.

Unless she studied more, she wouldn’t pass the exam.