Whatever you do, do with your might; Things done by halves are never done right.不论做什麽事要尽力去搞；事情做得不彻底，就不能算好.

What's bred in the bone will come out in the flesh.生就的本性，总会暴露的.

What's done by night appears by day.若要人不知，除非己莫为.

What's done cannot be undone¹.生米煮成熟饭了。

What's done can't be undone.无可挽回. 泼水难收？

What's learnt in the cradle lasts till the tomb.小时学过的，至死不忘记.

What's lost is lost.流水落花春去也.

What's more miserable² than discontent?有什麽比不知足更为痛苦？

What's up your sleeves?你又在变什么戏法?

Whatsoever³ ye would that men should do to you, do ye ever so to them.己所欲，施于人.

Whe angry, count ten before you speak; if very angry, a hundred.怒时数十再说话，大怒数百方开言.

When a dog is drowning everyone offers him drink.落井下石.

When a friend asks, there is no “tomorrow”.朋友之求不可怠。

When a friend asks, there is no tomorrow.朋友的要求不要拖.

When ale (or drink or wine) is in wit is out.贪杯丧智.

When all men speak no man hears.人人都讲话，无人去听它.

When an opportunity is neglected, it never comes back to you.机不可失，时不再来.

When anger blinds the mind, truth disapears.怒火中烧瞎心眼，真理在前看不见.

When everybody's somebody then nobody's anybody.人人都伟大，世间没豪杰。

When flatterers meet, the devil goes to dinner.马屁精会面，魔鬼去赴宴.

When fortune knocks, open the door.运气来时，莫错过。

When Greek meets Greek, then comes the tug⁴ of war.龙争虎斗.

When guns speak it is too late to argue.待到炮声响，辩论已莫及.

When in doubt do nowt.心中无数，不可行动。

"When in doubt leave out."有疑问则驻笔。

When in doubt, play trumps⁵.举棋苟不定，何妨将一军.