Breakdown of Gdybyś miał lekką torbę, mógłbyś zabrać więcej butów.
Questions & Answers about Gdybyś miał lekką torbę, mógłbyś zabrać więcej butów.
Gdybyś is the combination of the conjunction gdyby (if) plus the 2nd-person enclitic -ś. It signals an unreal or hypothetical condition (the “second conditional”). A plain gdy would introduce a real or possible condition in the past or future, not a counterfactual one.
The particle -by (here with the enclitic -ś) is used to form the Polish conditional mood. It attaches either to the verb (miałbyś) or to the pronoun (ty byś miał). In Gdybyś miał, it marks the clause as hypothetical: “If you were to have…”
Polish expresses unreal/hypothetical conditions by using the past tense of the main verb plus the conditional particle. Even though the sense is “if you had (now) a light bag…,” the verb form is past imperfective: miał.