An idiom is a speech form or an expression that is peculiar to itself grammatically or cannot be understood from the individual meanings of its elements. Example: You’re the apple of my eye.
Originally it means the central aperture of the eye. Figuratively it is something, or more usually someone, cherished above others.
Some idioms to make your conversation more natural…..
“I need a shoulder to cry on.”
If someone needs a shoulder to cry on, they need someone who can provide them with emotional support.
“You’re very nosey.”
If someone is nosey, he/she tries to find out about private things of others which shouldn’t concern them.
“It cost me an arm and a leg.”
It means I paid an extremely high price.
“It’s not advisable to change horses in midstream.”
It means it might be unwise or at best a very risky thing to do if people make new plans in the middle of an important activity.
“I have to cash a check and make a payment on my bank loan. I’ll kill two birds with one stone by doing them both in one trip to the bank.”
It means to complete two tasks with one process or action.