47.Troubles never come singly.
48.Water dropping day by day wears the hardest rock away.
49.When in Rome, do as the Romans do.
50.Where there is life, there is hope.
51.Although the sun shine, leave not your cloak at home.
52.So said, so done.
53.No weal without woe.
54.We never know the worth of water till the well is dry.
55.Sharpening your axe will not delay your job of cutting wood.
56.Where there is s will，there is a way.
57.The weather and the life are both unpredictable .
58.There is not any advantage without disadvantage.
59.You cannot have your cake and eat it too.
60.Childhood shows the man, as morning shows the day.