...to be accepted by Penny's peers
is BASED on your desire to ensure...
The Big Bang Theory Season 3, Episode 6
But it seems pretty accurate,
considering who you BASED it on.
The Big Bang Theory Season 11, Episode 15
Based on your academic record,
any number of things, I would imagine.
The Big Bang Theory Season 2, Episode 16
Based on this pep talk,
I'd say you're still doing it.
The Big Bang Theory Season 9, Episode 17
It's BASED on the premise
The Big Bang Theory Season 7, Episode 3