Breakdown of Давай пригласим их, их же шестеро!
они
they
давай
let's (informal)
пригласить
to invite (perfective)
же
particle (same / exactly) / but / you know (emphasis)
Questions & Answers about Давай пригласим их, их же шестеро!
Why do we use the collective numeral шестеро here instead of just шесть?
When a personal pronoun is the subject of a quantity (like "there are six of them"), Russian strongly prefers collective numerals (двое, трое, четверо... up to десятеро) combined with the pronoun. While you might hear их шесть in casual speech, их шестеро is the grammatically standard and much more natural way to say "the six of them."
Is the second их in the same case as the first их?
They look identical, but grammatically they are different cases. The first их is in the Accusative case because it is the direct object of пригласим (invite whom? them). The second их is in the Genitive case, which is required when quantifying a pronoun with a numeral like шестеро (six of whom? them).
What does the particle же add to this sentence?
Why does давай pair with the future tense пригласим instead of an infinitive?