First conditional: If we don't hurry up,we'll be late. If I work hard,I'll pass my exams. If my cheque comes,I'll buy us all a meal. You'll get wet if you don't take an umbrella. If I find your book, I'll send it to you. Second conditional: If I had more money, I'd buy a CD player. If she knew the answer, she'd tell us. If we didn't have to, we wouldn't work so hard. If I had more time, I'd help. If I were you, I'd go to bed.