No. 18,454 in Russian
эффективным
Effective.
In a sentence
Этот метод оказался самым эффективным для решения нашей проблемы.
This method turned out to be the most effective for solving our problem.
The word 'эффективным' in this sentence is an adjective in the instrumental case describing the noun 'метод', indicating its capability to produce the desired result.
Для достижения высоких результатов важно быть эффективным в своей работе.
To achieve high results, it is important to be effective in your work.
Here, 'эффективным' functions as a predicate adjective in the instrumental case, referring to 'быть' (to be), explaining the quality of being effective for achieving goals.
Он сделал своё выступление невероятно эффективным, так что аудитория осталась впечатлена.
He made his presentation incredibly effective so that the audience was impressed.
In this context, 'эффективным' is an adjective describing the noun 'выступление', showing the positive influence or impact of the action on the audience.
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