Breakdown of آنها خودشان این وظیفه را کامل میکنند.
آنها
they
این
this
راrâ
definite direct object marker
خودkhod
self
Questions & Answers about آنها خودشان این وظیفه را کامل میکنند.
What does خودشان add to the sentence since آنها already means "they"?
خودشان (themselves) is used here as an intensifier to emphasize آنها (they). It stresses that they will complete the task themselves, rather than having someone else do it. It is made by combining خود (self) with the third-person plural suffix شان.
Do I always need to include the subject pronoun آنها when using خودشان for emphasis?
No, you can actually drop آنها and just say خودشان این وظیفه را کامل میکنند. Because Farsi verbs already show who is doing the action with the ـند ending, خودشان is enough to mean "they themselves". Including both words just makes the emphasis even stronger.
Why does را come after این وظیفه?
را is the specific direct object marker. Because the sentence is about a specific task, این وظیفه (this task), را must follow it immediately to show that it is the exact thing being acted upon.
How does the verb کامل میکنند work here?
It is a compound verb, which is very common in Farsi. It combines the adjective کامل (complete) with the verb میکنند (they do/make). Literally, it translates to "they make complete."