You probably won't be able to. You can identify them as idioms because they won't mean anything in the context in which they are used. You can try to puzzle out the probable meaning, but you'll probably just have to ask someone what they mean.
For example, in the sentence, "It was coming on to rain," you might be able to determine that "coming on to" means that rain seemed imminent, but you'd be better off asking to be certain.
Idiomatic Expressions are sayings that are commonly used but their meanings cannot be determined by the individual words in the saying itself. Below you will find an alphabetical list of idiomatic expressions
Give me 1 example of idiomatic expression
26 L in the A
Listening with interest.
C*nt
Quit horsing around is an idiomatic expression. It begins with the letter Q.
English has many idiomatic expressions, which are phrases that don't mean exactly what they say. Some phrases using fruits include "going bananas" and "the apple of my eye."
He's head over heels about her.
***MERGE THIS QUESTION*** should be with "What are some examples of idioms" - see Related Question link below
Some idiomatic expressions that begin with the letter o:Off the top of my headOn a soap boxOn pins and needlesOn the back burnerOut of gasOut of the frying pan and into the fireOut to lunchOver my head
It means you will be very successful.
di ko alam