Dio (Email Removed) writes:
"What about these idioms? Are them in fashion or out of fashion?"
Most of these are not idioms. An idiom is a phrase that is not compositional. "Compositional" means you can figure out the meaning by putting together the meanings of the individual words.
Most of these are compositional, though some of them are metaphoric and others are fixed phrases with specific uses and senses in specific contexts.
"1. Sorry? I beg your pardon? I didn't quite catch that."
These are fixed phrases, and the whole thing is a fixed repair request. The last part is a metaphor ("catch" means "understand").
"2. She thought I was making fun of her."
"Make fun of" is a very mild idiom; it means "tease", and it's pretty clear. Only the "of" is unclear, but it's just there to hook the object onto.
"3. I really put my foot in it."
This is a metaphor -- "put one's foot in it" (where "it" means something you don't want to put your foot into) means to say something embarrassing or wrong or insulting or all of the above.
"4. That has nothing to do with it."
"To do with" means "related to". That is an idiom, but only because "do" has so little meaning that its constructions are always vague. "Have nothing to do with" means "be unrelated to".
"5. You've got the wrong end of the stick."
Another metaphor. Think of picking up a shovel by the flat metal part.
"6. We need something along these lines."
An idiom, meaning "similar to this".
"7. Well, if that's the way you feel about it.."
A fixed phrase to indicate grudging acceptance of someone's attitude. Can be used as a challenge or to change the subject, depending on context and tone of voice. Be careful what you follow this phrase with.
"9. I'll take your word for it."
"Give one's word" means to promise; "take one's word" means to accept as true. Words have to do with meaning. Not all that idiomatic; again, pro-verbs like "give" and "take", "do", "make", etc. figure in lots of fixed phrases.
"10. I checked in yesterday."
A phrasal verb, most of which are technically idioms, because the particle usually doesn't contribute to the meaning. This means to register at a hotel, or, informally, to visit ("drop in").
"11. I'm checking out tomorrow."
To leave a hotel and pay one's bill, or, informally, to die (another metaphor).
"12. We pride ourselves on our service."
An old expression; "pride oneself on" means "take pride in", or "be proud of", which you'd probably also consider idioms. There's "take" again.
"13. It leaves much to be desired!"
A fixed phrase. It's an understatement, and means it's awful. This does come apart OK -- if it leaves much to be desired, then one must still desire much of it, which means it is undesirable as it is. So this shouldn't be that hard to understand, since it's compositional; and it's a fixed phrase, so you can just memorize it. Leave out the bang at the end, though.
"14. Who runs this hotel?"
"To run" an enterprise means to manage it.
"15. I need it right away."
"Right away" is a very common phrase meaning "immediately".
"16. I'll do it at once."
Ditto "at once".
"17. Mind the step."
An old verb use; "to mind" means "to bring to mind, to pay attention to". "Mind the step/gap" means "watch out for it"
"18. I'll get it straight away."
"Straight away" is a British usage for "right away".
"19. Mind your head."
"Watch out for your head", i.e, don't hit it on that thing hanging down.
"20. Keep out."
Another phrasal verb; with "out", "keep" means "stay". I.e, don't come in.
"bye bye"
Another fixed phrase, which I guess you understand OK.
Look, practically everything in English usage is a fixed or semifixed phrase, and you just have to learn a lot of them. Sorry, that's the price you pay for a simple morphology. Read a lot, watch TV, and pick up the phrases. These are all very simple ones.
You might find something useful at http://www.umich.edu/~jlawler/aue
-John Lawler -- http://www.umich.edu/~jlawler/ -- UM Linguistics Dept -- "Academic integrity still plagues campus" -- Headline, University of Michigan Daily 11/12/02