Hope for the best, but prepare for the worst.

　　抱最好的愿望，做最坏的打算。

　　Hungry dogs will eat dirty puddings.

　　饥不择食。

　　I cannot be your friend and your flatterer too.

　　朋友不能阿谀奉承。

　　If a man deceives me once, shame on him, if he deceives me twice, shame on me.

　　上当一回头，再多就可耻。

　　If a thing is worth doing it is worth doing well.(如果事情值得做就值得做好。)

　　If you make yourself an ass, don't complain if people ride you.

　　人善被人欺，马善被人骑。

　　If your ears glow, someone is talking of you.

　　耳朵发烧，有人念叨。

　　If you run after two hares, you will catch neither.

　　脚踏两条船，必定落空。

　　If you sell the cow, you sell her milk too.

　　杀鸡取卵。

　　If you venture nothing, you will have nothing./ Nothing brave, nothing have./ Nothing venture, nothing win.

　　不入虎穴，焉得虎子。

　　If you want knowledge, you must toil for it.要想求知，就得吃苦。

　　In a family way.

　　像一家人一样随便。

　　In at one ear and out at the other.

　　一耳进一耳出。

　　In deep water.

　　在水深火热中。

　　In doing we learn.

　　实践长才干。

　　Industry is the parent of success.

　　勤奋是成功之母。

　　In hot water.

　　处于困境。

　　In the same boat with

　　与….境遇相同

　　It is better to die when life is a disgrace.

　　宁为玉碎，不为瓦全。

　　It is easier to get money than to keep it.

　　挣钱容易攒钱难。

　　It is easy to be wise after the event.

　　事后诸葛亮好当。

　　It is easy to open a shop but hard to keep it always open.

　　创业容易守业难。

　　It is hard to please all.

　　众口难调。

　　It is never too old to learn./ Live and learn.

　　活到老，学到老。

　　It's never too late to mend.(过而能改，善莫大焉;亡羊补牢，犹未晚也。)

　　It is no use crying over spilt milk.

　　覆水难收。

　　It’s six one way, half a dozen the other.

　　半斤八两。基本上一样。

　　It is the first step that costs troublesome.

　　万事开头难。

　　It is the unforeseen that always happens.

　　天有不测风云，人有旦夕祸福。

　　It is too late to grieve when the chance is past.

　　坐失良机，后悔已迟。

　　It never rains but it pours.

　　不鸣则已，一鸣惊人。

　　It takes three generations to make a gentleman.

　　十年树木，百年树人。

　　Jack of all trades and master of none.

　　门门精通，样样稀松。/杂而不精的人。/三脚猫。

　　Judge not from appearances.

　　人不可貌相，海不可斗量。

　　Justice has long arms.

　　天网恢恢，疏而不漏。

　　Keep good men company and you shall be of the number.

　　近朱者赤，近墨者黑。

　　Kill two birds with one stone.

　　一箭双雕。 /一举两得

　　Kings go mad, and the people suffer for it.

　　君王发狂，百姓遭殃。

　　Kings have long arms.

　　普天之下，莫非王土。

　　Knowing something of everything and everything of something.(通百艺而专一长。)

　　Knowledge is power.

　　知识就是力量。

　　Knowledge makes humble, ignorance makes proud.

　　博学使人谦逊，无知使人骄傲。

　　Laughter is the best medicine.

　　笑声是最佳良药.

　　Learn and live.

　　活着，为了学习。

　　Learning makes a good man better and ill man worse.

　　好人越学越好，坏人越学越坏。

　　Learn not and know not.

　　不学无术。

　　Learn to walk before you run.

　　先学走，再学跑。

　　Leniency to those who confess and punishment to those who reject.

　　坦白从宽，抗拒从严。

　　Let bygones be bygones./Forget about the past wrongs.

　　过去的就让它过去吧。

　　Let sleeping dogs lie./Don’t wake up the sleeping dogs.

　　别惹麻烦。

　　Let the cat out of the bag.

　　泄漏天机。

　　Lies can never changes fact.

　　谎言终究是谎言。

　　Lies have short legs.

　　谎言站不长。

　　Life is but a span.

　　人生苦短。

　　Life is half spent before we know what it is.

　　人过半生，方知天命。

　　Life is not all roses.

　　人生并不是康庄大道。

　　Lifeless, faultless.

　　只有死人才不犯错误。

　　Life without a friend is death.

　　没有朋友，虽生犹死。

　　Like a drowned rat.

　　像落水狗一样。

　　Like a rat in a hole.

　　瓮中之鳖。

　　Like author, like book.

　　文如其人。

　　Like begets like./Like father, like son.

　　有其父，必有其子。

　　Like for like.

　　一报还一报。

　　Like knows like./Like attracts like.

　　惺惺相惜。

　　Like mother, like daughter.

　　有其母必有其女。

　　Like teacher, like pupil.

　　什么样的老师教什么样的学生。

　　Like tree, like fruit.

　　羊毛出在羊身上。

　　Little things amuse little minds.

　　小人无大志。

　　Live and learn.

　　活到老，学到老。

　　Long distance separates no bosom friends.

　　海内存知己，天涯若比邻

　　Look before you leap./Think twice before you do(act)./ To think twice.

　　摸清情况再行动。 /三思而后行。

　　Lookers-on see more than players.

　　当局者迷，旁观者清。

　　Look for a needle in a haystack.

　　大海捞针。

　　Losers are always in the wrong.

　　胜者为王，败者为寇。

　　Lost time is never found again.

　　岁月既往，一去不回。

　　Love at first sight.

　　一见钟情。

　　Love cannot be compelled.

　　爱情不能强求。

　　Love is blind.

　　爱情是盲目的。

　　Love is full of trouble.

　　爱情充满烦恼。

　　Love is never without jealousy.

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