Мы обсуждаем приставку «по-» на уроке.

we

Breakdown of Мы обсуждаем приставку «по-» на уроке.

• на: in
• урок: the lesson
• обсуждать: to discuss

Questions & Answers about Мы обсуждаем приставку «по-» на уроке.

What is the grammatical form of обсуждаем, and what does it tell us?

Обсуждаем is the 1st person plural, present tense, imperfective form of the verb обсуждать (to discuss).
It literally means “we discuss / we are discussing.”

• Person/number: мы обсуждаем = we discuss
• Tense: present
• Aspect: imperfective (focus on the process or repeated action, not on the result)

So this form tells us who is acting (we), when (now, in general or at this time), and that the focus is on the ongoing/repeated action, not on completion.

Why is it приставку, not приставка, in this sentence?

Приставку is in the accusative case, singular, feminine.

The noun’s base form (nominative) is приставка (a prefix), but обсуждать кого? что? takes a direct object in the accusative.
Feminine nouns ending in -a in the nominative usually change -a → -у in the accusative singular:

• приставка → приставку
• книга → книгу
• комната → комнату

So обсуждаем приставку means “(we) discuss the prefix.”

Why don’t we say обсуждаем о приставке по-? In English we say “discuss about…”

In Russian, is a and takes a :