1. If he works hard, he will achieve great progress. I
If he worked hard, he would achieve great progress. II
If he had worked hard, he would have achieved great progress. III
2 If they don't go to Moscow, they will not hear famous musicians.
If they didn't go to Moscow, they wouldn't hear famous musicians.
If they hadn't gone to Moscow, they wouldn't have heard famous musicians.
3 My father will have more free time if he doesn't read so many newspapers.
My father would have more free time if he didn't read so many newspapers.
My father would have had more free time if he hadn't read so many newspapers.
4 If you are not busy, you will come to our party.
If you were not busy, you would come to our party.
If you hadn't been busy, you would have come to our party.
5 I will translate the text if you will give me your dictionary for a couple of days.
I I would translate the text if you gave me your dictionary for a couple of days.
I would have translated the text if you had given me your dictionary for a couple of days.