1.If Alex studies, she will pass the exam. -- If Alex could study, she would pass the exam.
2.If he has any free time, he will phone me. -- If he had nay free time, he would phone me.
3. When I am older, I am going to buy a dog. -- If I were older, I would buy a dog.
4. If the meeting starts on time, I'll be home in two hours. -- If the meeting started on time, I wouid be home in two hours.
5. If Mr. Smith accepts my homework, I'll be very happy. -- If Mr. Smith could accept my homework, I would be very happy.
Первое предложение по 1 типу, а второе по 2 типу