you scratch my back and I'll scratch yours

 اگر محبت کنی محبتت را جبران می کنم

if you do me a favor, I'll do you a favor; let's cooperate

EXAMPLE 1: I'll help you with your homework if you do the dishes. You scratch my back and I'll scratch yours.

EXAMPLE 2: If! drive you into the city, will you pick up my dry cleaning? You scratch my back and I'll scratch yours.
 

talk into 

 متقاعد کردن

to persuade; to convince

EXAMPLE 1: Chris didn't want to jump out of the plane, but Erin talked him into it.

EXAMPLE 2: Stop trying to talk me into going to the dance club on Saturday night. I already decided that I'm going to Maria's party instead.
 

kid around

بشوخی با مسئله برخورد کردن، سربسر کسی گذاشتن

to joke around; to tease

EXAMPLE 1: Jeremy loves to kid around, so don't be offended by anything he says.

EXAMPLE 2: While they were kidding around, Tim accidentally poked Rob in the eye. He had to be rushed to the emergency room of the hospital.
 

it's a deal

معامله قبوله!

I agree (to a proposal or offer)

EXAMPLE 1: You'll make dinner every night for a month if! help you with your homework? Okay, it's a deal!

EXAMPLE 2: "If you rake up all the leaves in front of the house, I'll do the dishes." - "It's a deal!"
 

goody goody

 خود شیرین

self righteously or smugly good

EXAMPLE 1: Goody-goodies usually sit in the front row and smile at the teacher during class.

EXAMPLE 2: Samantha is a real goody-goody. She always offers to erase the blackboard at the end of class.
 

give sb the time of day

کسی را اصلاً تحویل نگرفتن

to ignore someone; to refuse to pay any attention to someone

EXAMPLE 1: Sandra never gave me the time of day back in college, but now she calls me all the time for advice.

EXAMPLE 2: Why don't you find a new stockbroker? Yours is always so busy, she barely gives you the time of day.
 

give sb the cold shoulder 

 کسی را تحویل نگرفتن

to be cold to someone on purpose; to snub someone

EXAMPLE 1: When Lisa saw Amber at the mall, she didn't even stop to talk to her. She really gave her the cold shoulder.

EXAMPLE 2: I can't understand why Joe would give you the cold shoulder. I thought you two were good friends!
 

give (sb) a run for (one's) money 

 مبارزه سختی بر خلاف انتظار داشتن

to be strong competition

EXAMPLE 1: We lost the soccer tournament, but we certainly gave the girls from Stamford High School a run for their money.

EXAMPLE 2: Tina is a good tennis player and always gives me a run for my money.
 

get or to have under one's belt 

 چیزی را بخوبی یاد گرفتن

 to have or to get experience

EXAMPLE 1:  Kristen had three years of working for a large law firm under her belt before leaving to start her own firm.

EXAMPLE 2: Ernie needs to get an MBA under his belt to get the job he wants.
 

get down to business

به کار خود چسبیدن

to get serious about a task

EXAMPLE 1: The book club members spent the first two hours of their meeting eating and drinking before finally getting down to business.

EXAMPLE 2: Our dinner guests are arriving in two hours. We'd better get down to business and start preparing.