о проблеме

about the problem

→ о
phrase Rare #29,988
about the problem О is followed by the prepositional case; проблеме is the singular form of проблема.
RU: Мы поговорили о проблеме.
EN: We talked about the problem.

Вам говорили о проблеме?

Have you been told about the problem?

Как давно Том уже знает о проблеме?

How long has Tom known about the problem?

Я знаю о проблеме.

I know about the problem.

У Тома было много времени, чтобы подумать о проблеме.

Tom had plenty of time to think about the problem.

Я ничего не знаю о проблеме Тома.

I don't know anything about Tom's problem.

Тому уже сказали о проблеме.

Tom has already been told about the problem.

Тому нужно рассказать о проблеме.

Tom needs to be told about the problem.