re: #357 goddessoftheclassroom

For example:

Ending a sentence with a preposition is something I will not put up with.

is perfectly correct because the relative pronoun “that” is implied (before the adjective clause beginning with “I”) and THAT is the object of the preposition.

Hmmm… my answer here would’ve been that the example is correct because neither “up” nor “with” is (in this context) a preposition at all — they’re both inseparable* elements of the three-word compound verb “put up with.”

Although maybe separability is not a good test — because one can say either “turn on the light” or “turn the light on,” but in either case, “on” is an element of the compound verb.