Я не отключу интернет до тех пор, пока не отправлю отчёт начальнице.

Breakdown of Я не отключу интернет до тех пор, пока не отправлю отчёт начальнице.

я
I
не
not
интернет
the internet
отправить
to send
отчёт
the report
отключить
to turn off
начальница
the boss
до тех пор, пока
until
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Questions & Answers about Я не отключу интернет до тех пор, пока не отправлю отчёт начальнице.

Why is there double negation: Я не отключу ... пока не отправлю?

Russian regularly uses double negation in sentences like this. The main clause is negative (не отключу = I won’t turn off), and the subordinate clause after пока is also typically negative (пока не отправлю = until I send).
It doesn’t “cancel out” like in some logical interpretations of English; it’s simply the normal Russian way to express “not until”.

What’s the difference between отключу and отключаю here?

Отключу is perfective future (a single completed action in the future): I will turn it off (once).
Отключаю would be imperfective, usually meaning either a repeated/habitual action (I turn it off) or a process (I’m turning it off), which doesn’t fit this “one-time future after a condition” idea as well.

Why is отправлю used (perfective), not отправляю / буду отправлять?

Because the meaning is “until I finish sending / successfully send the report.”
Отправлю (perfective future) focuses on the completion of the sending.
If you used imperfective (буду отправлять), it would lean toward “until I’m in the process of sending,” which is usually not what you mean in this type of deadline/condition structure.

How does до тех пор, пока work? Is it one expression or two?

Functionally it’s a paired construction meaning “until (such time as)”:

  • до тех пор = up to that time
  • пока = while / until
    Together they make a stronger, more explicit “until.” In many contexts you can shorten it to just пока не:
    Я не отключу интернет, пока не отправлю отчёт. (same core meaning, slightly less formal/emphatic)
Why is it пока не отправлю and not пока отправлю?

With the “until” meaning, Russian commonly uses пока + не + perfective verb to mean “until X happens / gets done.”
Without не, пока more easily reads as “while” (simultaneous action), which would change the sense.

Could the word order be different? For example: Пока не отправлю отчёт, я не отключу интернет.

Yes, that’s a very normal alternative. Russian allows flexible word order:

  • Я не отключу интернет, пока не отправлю отчёт начальнице. (main clause first)
  • Пока не отправлю отчёт начальнице, я не отключу интернет. (condition first; often more emphatic/organized)
    Meaning stays essentially the same.
Why is интернет in the accusative with no visible ending?

Интернет is an inanimate masculine noun. In Russian, inanimate masculine accusative = nominative in form, so it stays интернет.
You can still think of it as the direct object of отключу (turn off what? the internet).

Why is отчёт also unchanged in form?

Same reason: отчёт is masculine inanimate, so its accusative looks like nominative: отчёт.
If it were animate (like a person), you’d often see a different accusative form.

Why is начальнице in the dative case?

Because отправить commonly takes:

  • what is sent = accusative (отчёт)
  • recipient = dative (начальнице = to the (female) boss)
    So отправлю отчёт начальнице literally means “I will send the report to the boss.”
What does начальнице tell me about the boss?

The ending here is dative singular, and the base form is начальница (female boss/supervisor).
So the sentence implies the boss is female. If the boss were male, you’d typically say начальнику (dative of начальник).

Is интернет always used without an article, and can it mean the internet vs my internet?

Russian has no articles, so интернет can cover what English expresses with the internet / internet access / the Wi‑Fi depending on context.
In everyday speech, отключить интернет often means “turn off the internet (connection)” in some practical sense (router, mobile data, office connection), not “destroy the global internet.”

What’s the role of до in до тех пор? What case follows it?

До is a preposition that requires the genitive.
In this fixed phrase, тех is the genitive plural form of тот (“that”), and пор is genitive plural of пора (“time/occasion”). So до тех пор is literally “until those times,” i.e., “until then.”

Where is the stress in the tricky words: отключу, отправлю, отчёт, начальнице?

Common stress patterns:

  • отключу́ (stress on the last syllable)
  • отпра́влю (stress on пра́в)
  • отчёт (stress on -чёт)
  • нача́льнице (stress on ча́ль)