Pride comes before a fall．骄兵必败。
Amiss is as good as a mile.差之毫厘，失之千里。
Two is company,but three is none。两个和尚抬水吃，三个和尚无水吃。
Walls have ear.隔墙有耳。
Enough is as good as a feast．知足常乐。
Two can play the game.孤掌难鸣。
Newbroom sweeps clean.新官上任三把火。
Speak of the devil,and he appears.说曹操，曹操到。
The grass is greener on the other side of the hill．这山望着那山高。
Putting the cart before the horse.本末倒置。
Money talks.钱能通神。
参考资料：搜狐教育