Breakdown of To jest grypa. Powinieneś spać.
to
this
być
to be
spać
to sleep
powinien
should, ought to
grypa
flu
Questions & Answers about To jest grypa. Powinieneś spać.
Why is grypa in the Nominative case here? Shouldn't it be in the Instrumental case after the verb jest?
You only use the Instrumental case when saying a specific person or thing is another noun (like On jest lekarzem - He is a doctor). However, when you use the pointing phrase To jest (This is / It is), the noun that follows always stays in the basic Nominative case.
Is powinieneś the only way to say "you should"?
No, powinieneś is specifically for a man. If you are talking to a woman, you must say powinnaś. The Polish word for "should" acts a bit like an adjective, so it changes based on the gender of the person you are talking to.
The ending of powinieneś looks like a past tense verb. Is this sentence in the past tense?
Good catch! The -eś ending is indeed the same one used for "you" (masculine) in the past tense. However, the word powinien is special. Even though it borrows past-tense endings to show who is doing the action, it means "should" right now in the present tense.
Why use the imperfective verb spać instead of the perfective zasnąć?
The speaker is giving general advice to get some rest and stay asleep for a while (spać). If they used the perfective zasnąć, it would specifically mean "you should fall asleep," which focuses only on the exact moment of drifting off rather than the ongoing process of resting.
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