I'm not a native speaker. Also, I play video games. :P When the video game Left 4 Dead came out I thought the phrase was just a cool but largely meaningless title that hinted at the game being about zombies.
I, since then, found out it was a real phrase, but I'm still unsure as to what it really means. For example, the phrase "They were left for dead", does it mean something like this...
- "They were left to die [because there was no hope for them]", or maybe...
- "It was assumed they were dead by then." (ie. highly unlikely that they were still alive), or...
- "They were left there on purpose so they would die."
Also, another form of the phrase is "let die", which I first heard in Green Day's song "21 Guns":
When it's time to live and let die,
And you can't get another try,
Something inside this heart has died,
You're in ruins.
Here it sounds more like it has a similar meaning to "give up [on life?]".
Could someone explain this phrase and its various forms to me?