knock someone's sock off
Удивить, впечатлить кого-либо.
Here’s a receipt for fish curry that will knock your socks off.
Вот рецепт рыбного карри, который тебя точно удивит.
know by sight
know someone by sight
This idiom is used when the person has been seen previously but is not known personally.
Знать кого-либо в лицо; быть поверхностно знакомым с кем-либо.
I can't say that I know Lily well, actually I know her by sight only.
Я не могу сказать, что я знаю Лили хорошо, на самом деле я знаю только как она выглядит.
I have never met our new neighbors; I simply know them by sight.
The woman said that she would know the thief by sight if she ever saw him again.
know if one is coming or going
know whether one is coming or going
To feel able to think clearly; know what to do. Usually used in the negative or with limiters.
On Monday, the car broke down; on Tuesday, Mother broke her arm; on Wednesday, the children all became ill with the mumps; by Thursday, poor Father didn't know if he was coming or going.
My cousin is so much in love that she scarcely knows whether she's coming or going.
know one in high places
To be connected with people in power.
Ted's grandfather was the mayor of Chicago so he knows people in high places.
know one is alive
Not to notice a person. Used with negative or limiting words and in questions.
She was a good-looking girl but she didn't know I was alive.
know one's ABCs
дословно: Знать чьи-либо АБВ
Знать алфавит, или самые основы, базовые вещи о чем-либо.
Знать алфавит, или самые основы, базовые вещи о чем-либо.
The students worked hard and everyone knew their ABCs very well.
Студенты учились очень усердно и все очень хорошо знали основы своей специальности.
know one's onions
know one's stuff
To have experience and skill in an activity.
Before trying to make any pottery, it is better to get advice from someone who knows his stuff in ceramics.
know one's own mind
To no hesitate or vacillate; be definite in one's ideas or plans.
It is impossible to do business with Fred, because he doesn't know his own mind.