不管张三李四。
Every Tom, Dick and Harry

一波未平一波又起。
Out of the frying pan into the fire

舍名求实。
I live to eat

瞎猫碰上了死耗子。
Every dog has his day

说曹操，曹操到。
Speak of the devil

情人眼里出西施。
Love is blind

一举两得。
Kill two birds with one stone

不闻凶讯便是吉。
No news is good news.
光阴似箭。
Time flies

时间就是金钱。
Time is money

百艺不如一艺精。
Jack of all trades, master of none

三思而后行。
Look before you leap

百闻不如一见。
Seeing is believing

无风不起浪。
There is no smoke without fire

诚实总是上策。
Honesty is the best policy

晚做总比不做强。
Better late than never

男孩子就是男孩子嘛!
Boys will be boys

知识就是力量。
Knowledge is power

冰冻三尺非一日之寒。/罗马不是一天就建成的。
Rome was not built in a day

入乡随俗。
When in Rome, do as the Romans do

熟能生巧。
Practice makes perfect

历史总在重演。
History repeats itself

祸不单行，福无双至。
When it rains, it (always) pours

功夫不负有心人。
Where there's a will, there's a way

行动比语言更响亮。
Actions speak louder than words

血浓于水。
Blood is thicker than water

有其父必有其子。
Like father, like son

恋爱和战争都是不择手段的。
All's fair in love and war

美貌不过一张皮。
Beauty is only skin deep.

东西总是人家的好。
The grass is always greener on the other side (of the fence).

不劳则不获。
You cannot make an omelet without breaking eggs

流水不腐，户枢不蠹。
A rolling stone gathers no moss

患难见真情。
A friend in need is a friend indeed.

只会工作不会玩的人是没意思的人。
All work and no play makes Jack a dull boy

事实胜于雄辩。
The proof of the pudding is in the eating.

岁月不待人。
Time and tide wait for no man

越快越好。
The sooner, the better