examples: My old cassette Walkman is just gathering dust in my closet.
Dave said his old textbooks are just gathering dust, so he's going to donate them to the school library.
meaning: we should do the important tasks first
examples: First things first. Let´s take the ingredients out of the fridge before we start cooking.
You want to get married? First things first. You should ask her for a date!
meaning: an insignificant amount of money \ a very small amout of something big
examples: Dave is so rich so for him, buying a brand new car is a drop in the bucket.
Buying a house isn´t a drop in the bucket, so we need to make a decision carefully.
meaning: be the perfect solution
examples: It´s very cold out, but this woolen hat will do the trick and keep me warm.
I can replace the memory in your computer. That should do the trick. You won´t have trouble anymore.
meaning: depend on
examples: I´m counting on my students to do their homework and study hard.
Good luck on your business trip! We´re all counting on you to make the deal.
meaning: change your decision or opinion about something
examples: I was thinking of having pizza for lunch, but I changed my mind. I'm going to have salad instead.
The boss changed his mind and decided to give everyone a bonus!
meaning: an important issue
examples: Being invited to speak at our annual meeting is a big deal for Liam. All of the executives will be there.
You´ll be half an hour late? That´s not a big deal. Drive carefully.
meaning: be very successful, to achieve perfection (добиться вершин успеха)
Выражение из бейсбола, где достижения игрока в бэттинге выражаются десятичной дробью (трехзначное число после запятой). <Выбить тысячу> - абсолютно невозможное, чисто теоретическое достижение.
examples: Wow! You made another sale! That's 25 sales today! You're batting a thousand!
Every girl that Adam asks for a date says yes. He's batting a thousand.