CONDITIONALSType 0 If + present simple, present simple • If you arrive early, you get a better seat general or scientific facts • Water boils faster if you don’t put salt in it. we can use an imperative structure in the result clause • If you change your mind, give me a ring.Type 1 If + present simple, will + bare infinitive • If we run, we won’t be late. real or likely situation in the present or future and • If you leave now, you won’t miss the bus. their results. • If you don’t wear a coat, you’ll feel cold. • If Mary studies hard, she will pass the test.Type 2 If + past simple, would/could/might + bare • If we had enough money, we would buy a new bike.infinitive • If I were you, I would take the job. impossible or unlikely situations in the present or • Would you be happier if you were a millionaire? future and their results. • If we knew her address, we could visit her.Type 3 If + past perfect, would/could/might + have • If John hadn’t been tired, he’d have gone to the party.+ past participle • If I had taken a raincoat, I wouldn’t have got so wet. unreal situations in the past and their unreal past results • If Peter had studied, he might have passed the exam. We only use unless in real situations for things that could really happen. I won’t do the cooking if you don’t help me unless you help me. When we start the sentence with if, we separate the situation and the result with a comma. When we start the sentence with the result, we don’t use a comma. We won’t be late if we run. / If we run, we won’t be late.