1.Strick while the iron is hot.
趁热打铁．

2.There is nosmoke without fire.
无风不起浪．

3.Many a little makes a mickle.
积少成多．

4.Many hnds makes light work.
人多力量大．

5.Bitter pills may have wholesome effects.
良药苦口．

6.When in Rome,do as Romans do.
入乡随俗．

7.The early bird gets(/catches) the worm.
捷足先登．

8.Kill two birds with one stone.
一箭双雕．

9.Well begun is half done.
好的开头是成功的一半．

10.Talk of the devil and he will appear.
说曹操曹操就到．

11.You'd better play the man a little more.
你应该多一点男子汉气概。

12.It's the hature of beasts..
本性难移。

13.Let things run their course.
听其自然。

14.As you brew so you must drink .
自作自受。

15.Don't cross the bridge until youcome to it.
不要杞人忧天。

16.Money burns a hole in his pocket.
钱烧口袋漏，一有就不留。

17.Better late than never .
迟做总比不做好。

18.Set a bagger on horseback and he'll ride to the devil.
叫花子发财忘乎所以然。

19.The child is father of (/to)the man.
３岁订到老。

20.Birds of a feather flock together.
鸟以群分，物以类聚。