意味の違い教えてください
意味の違いがわかるように和訳をお願いします
1-1 I hope you are strong and healthy.
1-2 I wish you were strong and healty.
2-1 If you help him,he will be happy.
2-2 If you had helped him , he would have been happy.
3-1 If he had started yesterday, he would be in time.
3-2 If he had started yesterday, he' have been in time.
4-1 Two more days would be enough for the work.
4-2 In another week, I would have been back at home.
よろしくお願いします