skuteczną

In a sentence

• Potrzebujemy skuteczną strategię.

  We need an effective strategy.

  Here, 'skuteczną' is the feminine singular accusative form of the adjective 'skuteczny,' agreeing with the noun 'strategię' (strategy), indicating an objective that is effective.

• Znaleźliśmy skuteczną metodę nauki.

  We found an effective learning method.

  In this context, 'skuteczną' modifies the noun 'metodę' (method), which is in the feminine singular accusative case, describing the method as effective.

• Wprowadzenie skutecznej terapii jest kluczowym elementem leczenia.

  Implementing an effective therapy is a key element of treatment.

  'Skutecznej' is used here as the feminine singular genitive form of 'skuteczny' to agree with 'terapii' (therapy) in a genitive phrase following the noun 'Wprowadzenie' (Introduction/Implementation).