always
adverb /ˈɔːlweɪz/
  /ˈɔːlweɪz/
Idioms - at all times; on every occasion
- There's almost always somebody at home in the evenings.
 - Always lock your car.
 - She always arrives at 7.30.
 - The children always seem to be hungry.
 - Success seems always to be out of reach.
 - Your ideas are always welcome.
 - It's not always easy to do the right thing.
 - We're not always this busy!
 
 - for a long time; since you can remember
- Pat has always loved gardening.
 - This is the way we've always done it.
 - This painting is very good—Ellie always was very good at art (= so it is not very surprising).
 - Did you always want to be an actor?
 
 - for all future time
- I'll always love you.
 
 - if you say a person is always doing something, or something is always happening, you mean that they do it, or it happens, very often, and that this is annoying
- She's always criticizing me.
 - That phone's always ringing.
 - Why are you always complaining about my cooking?
 
 - can/could always…, there’s always…used to suggest a possible course of action
- If it doesn't fit, you can always take it back.
 - If he can't help, there's always John.
 
 
Word OriginMiddle English: genitive case of all way, the inflection probably giving the sense ‘at every time’ as opposed to ‘at one uninterrupted time’: the difference between the two is no longer distinct.
Idioms 
as always 
- as usually happens or is expected synonym as usual
- As always, Polly was late for school.
 
 
once a…, always a… 
- used to say that somebody cannot change
- Once an actor, always an actor.