Держи меня в курсе.

keep me posted

Questions & Answers about Держи меня в курсе.

Why is держи used here, and what verb does it come from?

Держи is the informal singular imperative of держать (to hold / keep).

In this expression, Russian uses the same idea English does in keep me informed:

• держать = to keep
• меня = me
• в курсе = in the know / informed / up to date

So Держи меня в курсе literally feels like Keep me in the know.

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Why is it меня and not я or мне?

Because меня is the accusative case of я.

Here, держи takes a direct object: keep whom? → me.
So:

• я = I
• меня = me (accusative/genitive form)
• мне = to me / for me (dative)

In this sentence, Russian needs the equivalent of English me, so меня is correct.

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What does в курсе mean exactly?