@MontereyJack,
Quote:Really? What part of speech is it supposed to be?
Are idioms parts of speech? What part of speech is "kick the bucket"?
Quote:Can you use it in a sentence, as you can other idioms?
You definitely don't want to count your chickens before they hatch.
It's best that you don't count your chickens before they hatch.
Quote:How do you use it instead of some other part of speech not an idiom?
????
Quote:Can you use it to express anything other than what it says
Idiom - Don't count your chickens before they hatch, Jack.
Literal -
Farmer Jones: One, two, three, four,
MJ: Don't count your chickens before they hatch, Farmer Jones.
Quote:It's a sentence, not an idiom.
So is "Kick the bucket"; Bite the bullet; Don't bite off more than you can chew; Don't beat around the bush; Break a leg; Spill the beans; You can say that again; ... .
Quote:An idiom is an expression larger than a word whose meaning cannot be systematically derived from meanings that the parts have when used independently of each other.
The Cambridge Grammar of the English Language pg 273