Questions & Answers about Zeszły tydzień był bardzo długi.
Why use zeszły for "last" here instead of ostatni?
In Polish, zeszły specifically means "previous" or "past" when talking about units of time (like last week or last year). The word ostatni also translates to "last", but it usually means "final" (like the last piece of cake) or "the very last in a sequence".
Is tydzień a masculine noun even though it ends in a soft consonant?
Why is the word for "long" długi here instead of długie or długa?
Adjectives must match the gender of the noun they describe. Because tydzień (week) is a masculine noun, the adjective takes the masculine singular nominative form, which is długi.
Why isn't the adjective długi in the instrumental case after the verb był?