Let alone
We have not yet found any evidence of life on Mars, let alone footprints.
no, it hasn't even been filmed yet, let alone been in the cinemas or stores
Alone Yet Not Alone - 2013 is rated/received certificates of: USA:PG-13
Doubtful. They haven't made any bug Webkinz yet, let alone arachnids such as scorpions, spiders, and ticks.
It is yet unknown, as we haven't even explored 1% of our own galaxy, let alone the whole universe.
He's a kid, at his age he hasn't even been in love yet let alone found "the one".
She's yet another girl in your Spank Bank that you'll never meet let alone get with.
No, because they weren't Christian. Jesus wasn't even around yet, let alone the holiday of Christmas.
Not yet, in fact, PlayStation Portable 2 (or Next Generation Portable, whichever takes your fancy) isn't even out yet, let alone PlayStation Portable 3!
If you are talking about the third book, it is "brisingr" and is already out. But if you are talking about the fourth, its name is yet to be announced let alone when.
There has been rumors of a possible Indiana Jones 5, but at present, it has yet to be in development, let alone a script.
I promise not to let you go into the unknown alone.