Breakdown of Сегодня вечером я буду вести вебинар по русскому языку.
я
I
быть
to be
сегодня
today
вечером
in the evening
Questions & Answers about Сегодня вечером я буду вести вебинар по русскому языку.
Why is it сегодня вечером and not сегодня в вечер or в сегодня вечером?
Сегодня вечером is a fixed, very common time expression meaning this evening.
- сегодня = today
- вечером is the instrumental case of вечер used adverbially to mean in the evening (time when something happens).
You typically don’t add в here. В вечер is not idiomatic, and в сегодня is ungrammatical.
What case is вечером, and why is it in that case?
Вечером is instrumental singular of вечер. Russian often uses the instrumental case to express time of day as an adverbial:
- утром (in the morning), днём (in the daytime), вечером (in the evening), ночью (at night).
Why does Russian include я? Can it be omitted?
Yes, я can often be omitted because the verb form already shows the person:
- Сегодня вечером буду вести вебинар… is natural and common.
Keeping я adds emphasis or clarity (e.g., contrasting with someone else).