Common English idiom

as easy as pie

very easy
He said it is a difficult problem, but I don't agree. It seems as easy as pie to me!

I am sick and tired of

I hate
I'm sick and tired of doing nothing but work. Let's go out tonight and have fun.

bend over backwards

try very hard
He bent over backwards to please his new wife, but she never seemed satisfied.

bite off more than one can chew

take responsibility for more than one can manage
John is so far behind in his studies. Besides classes, he plays sports and works at a part-time job. It seems he has bitten off more than he can chew.

broke

to have no money
I have to borrow some money from my Dad. Right now,I'm broke.

change one's mind

decide to do something different from what had been decided earlier
I was planning to work late tonight, but I changed my mind. I'll do extra work on the weekend instead.

Cut it out!

stop doing something bad
That noise is really annoying. Cut it out!

drop someone a line

send a letter or email to someone
It was good to meet you and I hope we can see each other again. Drop me a line when you have time.

figure something out

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

fill in for someone

do their work while they are away
While I was away from the store, my brother filled in for me.

cut the mustard

to be as good as expected or required
I didn't cut the mustard as a hockey player.

a level playing field

a situation in which everyone has the same opportunities

the cards/odds are stacked against you

you are unlikely to succeed because the conditions are not good for you

be better off

to have more money
Families will be better off under the new law.

spread the word

To tell a lot of people about something

be a double-edged sword/weapon

to be something that has both advantages and disadvantages

breathe a sigh of relief

feel happy that something unpleasant stops

wean somebody off/from something

to make somebody gradually stop doing or using something
The doctor tried to wean her off sleeping pills.

wake up and smell the coffee

to pay attention and do something about a situation
Some parents just deny their kids are having problems, and they'd better wake up and smell the coffee.

You can't have your cake and eat it.

You can't have things both ways.
I drank a whole bottle of champagne at the party last night, but now I feel sick - I've got the worst hangover ever. But I suppose you can't have your cake and eat it!

to get hitched

an informal expression meaning to get married

to brush up

to revise or improve your knowledge of something