"This man is Torg."
Translation:torgh ghaH loDvam'e'.
When optional, -'e' is used to give focus to a particular noun, whether a respectful focus or not.
HeS torgh. Torg commits crime.
HeS torgh'e' It's Torg who commits crime.
But as David says, in this particular sentence, -'e' is not optional. It's an idiomatic pattern, so you can just memorize that to say NounA is/are [a/the] NounB you say B 'oH/ghaH/chaH/bIH A'e'
You can also use -'e' to talk about a noun without otherwise giving it a grammatical role in the sentence.
Sajmey'e' targh vImaS When it comes to pets, I prefer the targ.
The use of -'e' is a complex subject and this course doesn't really address the full complexity. We only teach and demonstrate two uses of -'e'. We teach it with pronouns acting like a "to be" verb (like this sentence) because that's the one time it is absolutely required. And we also teach the optional use of -'e' to disambiguate which noun is the head noun of a -bogh clause.