Las oraciones del primer condicional pasar a positiva en ingles?

Las oraciones del primer condicional pasar a positiva en ingles. - if he is busy now, I will came back tomorrow. - if it is cold, you must wear warm clothes. - if he catches a fish, he will be very happy. - lisa will ve very happy, if she wins the prize - if I see sam, I will ask him to give you a call.