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One that's really obvious, is when almost everyone calls Katniss "the girl on fire" you could take that literally, but its meant as an idiom meaning that Katniss is full of rage and is crazy. Thats the only one i can remember from the top of my head from Hunger Games
Hunger makes the stomach sad and empty. It is an idiom when you are hungry and have nothing to eat.
This isn't a question -- nor are idioms questions, so you can't "answer" an idiom. Perhaps you mean "Soccer games aren't my cup of tea" instead -- here's a link to show you what that idiom means.
"Wolf at the door" is an idiom referring to hunger, so if you drive the wolf away, you're keeping yourself from starving.
Idiom is correct.
The Grapefruit Leagues is the food-related idiom for pre-season leagues.
what is a idiom about a cat
"To be" is not an idiom - it's a verb.
An idiom misuse is to use and idiom in a wrong way that doesn't make sense.
The idiom "apple shiner" means the teacher's pet.
The idiom for 'larger than life' is "a force of nature."
One example of a metaphor in Catching Fire is "lighting a fire under someone," used to indicate motivating or inspiring action. An idiom in the book is "the calm before the storm," conveying a sense of impending trouble or conflict.