If he were not busy, he would come to see us.
If the girl had studied well last year, she would not have received bad marks.
If he had not broken his, bicycle, he would have gone to the country.
If he had (more) practice, he would speak English better.
If I had not had a bad headache yesterday, I should have come to see you.
If the ship had not sailed near the coast, it would not have struck a rock.
If he had been in town, he would have been present at our meeting.
If the pavement had not been so slippery, I should not have fallen and hurt my leg.
If the sea were not (so) rough, we should (could) sail to the island.
If they had not made a fire, the wolves would not have run away.
If it were not late, I should not have to go home.
If I had not expected my friend to come, I should (could) have gone to the cinema with you.
If mathematics were not his favourite subject and he did not work a lot on it, he would not always get top marks.
If I had had a dictionary, I should have translated the article yesterday.
If the night had not been pitch-dark, we should not have lost our way.
If the box had not been so heavy, (I could have carried it and) I should not have taken a taxi.