See eye to eye: Đồng ý với ai đó.

Ex: "They finally saw eye to eye on the business deal."

To cost an arm and a leg: Thứ gì đó quá đắt

Ex: "Fuel these days costs and arm and a leg."

Behind the times : lỗi thời, hết thời  

Ex: "My friend never likes using smart phones. She's so BEHIND THE TIMES."

Be in/get into deep water : trong tình thế nguy hiểm/khó khăn (  to say that you are in trouble or in a dangerous situation )

Ex: ''He has not submitted his dissertation so he's IN DEEP WATER.''

To be up in arms about something (informal): tức giận, buồn bực vì điều gì đó  

Ex: ''She has been UP IN ARMS about the rent increase."

Bend over backwards : rất cố gắng ( có trường hợp quá sức) (try very hard to do something good or helpful)

Ex: "He bent over backwards to please his new wife, but she never seemed satisfied."

Sleep on it: suy nghĩ (trước khi quyết định)  

Ex: "Ex: That sounds like a good deal, but I'd like to sleep on it before I give you my final decision."

Figure something out : hiểu được vấn đề gì  

Ex: "I don't understand how to do this problem. Take a look at it. Maybe you can figure it out."

In the nick of time: xíu nữa, 1 lúc nữa

Ex: "I got to the drugstore just in the nick of time. I really need this medicine! " 

Go back to the drawing board = làm lại từ đầu

Unfortunately the plans didn't work out. We'll have to go back to the drawing board.

Make a fresh start / make a clean break = bắt đầu lại việc gì đó

Let's put the problems behind us and make a fresh start.