know one's way around
know one's way about
learn one's way around
To understand how things happen in the world; he experienced in the ways of the world.
The sailor had been in the wildest ports in the world. He knew his way around.
To have experience and skill in an activity.
I’d used the library before, so I knew my way around and found the book quite quickly.
know something inside out
know what's what
To be extremely well conversant with something; be an expert in; have thorough knowledge of.
Быть экспертов в чем-либо; "знать вдоль и поперек".
Tom knows the stock market inside out.
My friend is a guide and she knows our town inside out.
Моя подруга - экскурсовод, и она знает город вдоль и поперек.
know somethng like a book
know something like an open book
Знать что-либо очень хорошо.
My mother knows me like an open book.
Моя мама знает меня очень хорошо.
know which side one's bread is buttered on
To know who can help you and try to please him; know what is for your own gain.
Знать кто может вам помочь и пытаться подружиться с ним. Знать что является вашей собственной целью.
Dick was always polite to the boss; he knew which side his bread was buttered on.
Jack never argues with his father-in-law. He knows which side his bread is buttered.
Джек никогда не спорит со своим тестем. Он знает, откуда ветер дует.
know-how
Expertise; ability to devise and construct.
The United States had the know-how to beat the Soviet Union to the moon in 1969.
know-it-all
A person who acts as if he knows all about everything; someone who thinks no one can tell him anything new.
After George was elected as class president, he wouldn't take suggestions from anyone; he became a know-it-all.
Also used like an adjective.
The other students didn't like George's know-it-all attitude.
let know
To inform.
Please let us know the time of your arrival.
let one's left hand know what one's right hand is doing
To make a show of your kindness or help to others. Used in the negative.
The Bible tells us not to let the left hand know what the right hand is doing when we give to the poor.
To let everyone taking part in something know what each is doing; encourage cooperation in working. Often used in the negative.
Tom told Fred and Bill to meet him in town, but he forgot to tell them where. Next time he'll let his left hand know what his right hand is doing.
Our team lost today because the coach and captain did not let the left hand know what the right was doing, and the players were all mixed up.