Breakdown of До работы мне надо отдохнуть, а потом объяснить план.
а
and (contrastive)
работа
work, job
план
plan
потом
then
мне
to me
надо
must, need to
до
before, until
отдохнуть
to rest (perfective)
объяснить
to explain (perfective)
Questions & Answers about До работы мне надо отдохнуть, а потом объяснить план.
Why do we use the perfective verbs отдохнуть and объяснить after надо instead of their imperfective partners?
We use perfective infinitives here because the focus is on achieving a result. You don't just need to spend time in the process of resting or talking—you need to be rested and to successfully get the plan across. When a modal word like надо refers to completing a single, concrete action with a desired result, we use the perfective aspect.
Why is it до работы instead of до работа?
The preposition до, when used to mean "before" in time (or "up to" in space), always requires the genitive case. Since работа is a feminine noun ending in -а, it changes to работы in the genitive.
Why does the sentence use мне надо instead of я надо?
The word надо (need / it is necessary) is not a standard verb. It requires the person who "needs" something to be in the dative case. Literally, the structure translates to "to me it is necessary." That is why the pronoun я (I) becomes мне (to me).
The English translation says "and then", so why does the Russian use а потом instead of и потом?
In Russian, the word а is often used to show a transition to the next step in a sequence, not just a direct contrast (like "but"). While и потом is also correct and means "and then", а потом is very common and natural when outlining a step-by-step plan or schedule ("first this, and then moving on to that").
Since "the plan" is the object of the verb "to explain", shouldn't план change its ending for the accusative case?
It actually is in the accusative case! Because план is an inanimate masculine noun (a non-living thing), its accusative form looks exactly the same as its dictionary (nominative) form. A masculine noun's ending only changes in the accusative case if it represents a living person or animal.
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