会吵的小孩有糖吃
the squeaky wheel gets the grease
No matter what table they give her, Helen generally insists on a better one and gets it--the squeaky wheel gets the grease.
　
祸不单行；不雨则已，雨则倾盆
it never rains but it pours
When troubles come together, we can say "It never rains but it pours."
　
酩酊大醉
(as) drunk as a lord; drunk as a fiddler or skunk
He came home drunk as a lord.
　
隔墙有耳
the walls have ears
Be careful what you say; the walls have ears.
　
岁月不饶人；岁月不待人
time and tide wait for no man
Let's get on with the voting; time and tide won't wait, you know.
　
预防胜于治疗；亡羊补牢不如防患于未然
prevention is better than cure
More advice is needed on how to stay healthy because, as we all know, prevention is better than cure.
　
新官上任三把火
a new broom sweeps clean
Once he takes office, you can be sure the President will replace most of the people on the staff-- a new broom sweeps clean.
　
塞翁失马，焉知非福
a blessing in disguise
Missing the train was a blessing in disguise, for if I hadn't, I wouldn't have met my future wife.
　
沧海一粟；九牛一毛
a drop in the bucket/ocean
These contributions are just a drop in the bucket; the new church wing will cost thousands more.
　
爱屋及乌
love me, love my dog
I had agreed to take my new job only on the condition that Mr. Wang remained at my right hand. "It's a case of love me, love my dog."
　
腰缠万贯
made of money
Do you think I'm made of money?
　
夸大其词
lay it on thick
He'd injured his hand slightly but he was laying it on a bit thick about how painful it was.
　
乱七八糟；七嘴八舌：众说纷纭
at sixes and sevens
We've just moved in, and the office is still at sixes and sevens.
The new college admissions tests were poorly explained, leaving the students at sixes and sevens.
　
势均力敌
neck and neck; it is even Stephen/Steven
The two are neck and neck in developing a new operating system for the computer.
The two leading candidates have an equal support rate -- it's even Stephen.
　
装腔作势
put on an act
We know you're a good swimmer -- stop putting on an act.
　
落井下石；乘人之危：雪上加霜
hit/kick a man/someone when he is down
Never hit a man when he's down.
　
微乎其微 (几乎没有)
next to nothing
She knows next to nothing about politics.
The city has done next to nothing about the parking problem.
　
脚踏实地
have/keep one's feet (set/planted) (firmly) on the ground
She is a girl who has her feet (planted firmly) on the ground.