His holier-than-thou attitude annoyed me, since I happened to know his information was wrong.
It depends on whether the statement is a complete sentence or not. If the quoted statement is a complete sentence, you would use a period. If the quoted statement is within a larger sentence, you would use a comma.
she lost her virtue in the city.
Plato is a name, so you use it in a manner consistent with how you would use any other name. As in, "Plato wrote a sentence."
She sat by the lake to contemplate her future.
The workers expressed their discontent with the new company policies by organizing a strike.
i do not know how to use embalming in a sentence. (there is the sentence)
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
use contingency in a sentence?
How do you use sedition in a sentence
use adainty as sentence
Can you use abstemious in a sentence?
use aver in a sentence
use figureatively in a sentence
use inmates in sentence
can i use polymer in a sentence
Use it in a big sentence.
.. how can use scrum in a sentence