Questions & Answers about Перед уроком я достаю тетрадь из сумки.
Перед can mean before in time or in front of in space. In this sentence it means before.
After перед, Russian normally uses the instrumental case, so:
- урок = lesson
- уроком = instrumental singular
So перед уроком literally means before the lesson.
Russian does not have articles like a or the.
So урок can mean:
- a lesson
- the lesson
The exact meaning is understood from context. In this sentence, English often translates it as before the lesson, but Russian does not need a separate word for the.