No. 8,441 in Russian
настолько
"So much" or "to such an extent."
In a sentence
Эта идея настолько интересна, что я не могу перестать о ней думать.
This idea is so interesting that I can't stop thinking about it.
The word 'настолько' is used here to emphasize the following adjective 'интересна', indicating a high degree of interest.
Я не был настолько занят, чтобы не ответить на твой звонок.
I was not so busy that I couldn't answer your call.
In this sentence, 'настолько' sets a limit to the state of being busy, implying not being busy to such an extent.
Чтобы прийти к этому результату, нужно быть настолько внимательным, насколько это возможно.
To achieve this result, one needs to be as attentive as possible.
Here, 'настолько' is paired with 'насколько' to form a comparative phrase expressing the highest degree of attentiveness.
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