Breakdown of Он настолько занят, что не обедает.
он
he / it (for a masculine noun) / it (for a neuter noun)
обедать
to have lunch
что
that (conjunction)
занят
busy (short form)
Questions & Answers about Он настолько занят, что не обедает.
Why does this sentence use настолько ... что instead of the lesson's focus, слишком ... чтобы?
This sentence states a factual result rather than an impossibility. If you used слишком ... чтобы (Он слишком занят, чтобы обедать), it would mean "He is too busy to eat lunch" (the excess prevents the action). By using настолько ... что (so ... that), you are saying "He is busy to such an extent that he [as a factual result] does not eat lunch."
Could I just say Он так занят, что... instead of using настолько?
Yes, так and настолько are interchangeable in this context. Настолько slightly emphasizes the degree or extent of his busyness (to such an extent), while так is simply "so." Both pair perfectly with что to introduce a factual result clause.
Why use the short adjective занят here instead of the long form занятый?
Short adjectives are used to describe temporary states or conditions. Он занят means he is currently busy. If you used the long form (Он очень занятый человек), it would describe a permanent characteristic, meaning he is generally a "busy person" by nature, which shifts the focus away from his current state.
The English translation says "skips lunch," but the Russian is just не обедает. Is there a Russian verb for "skip"?