Breakdown of Po pierwsze, musimy sprawdzić tę hipotezę, żeby ją udowodnić.
ona
she / it (f)
ten
this (m)
musieć
to have to
sprawdzić
to check
Questions & Answers about Po pierwsze, musimy sprawdzić tę hipotezę, żeby ją udowodnić.
Why does "firstly" translate to po pierwsze with an -e ending?
The phrase po pierwsze is a fixed expression. When sequencing arguments, the preposition po is followed by the neuter form of the ordinal number (pierwsze, drugie, etc.). You will use this exact same pattern for "secondly" (po drugie) and "thirdly" (po trzecie).
Why is it tę hipotezę and not tą hipotezę?
Hipoteza is a feminine noun functioning as the direct object here, so it needs the accusative case. The formally correct accusative form of ta is tę. You will frequently hear native speakers say tą hipotezę in casual speech, which is actually the instrumental form, but at a B2 level it is good to master the strict tę for writing and formal contexts.
Could I put the pronoun ją at the very end of the sentence?
Why is żeby followed by the infinitive udowodnić?