Breakdown of Vi måste ge oss av innan det blir mörkt.
det
it (neuter)
vi
we
måste
to have to, must
innan
before
Questions & Answers about Vi måste ge oss av innan det blir mörkt.
Why does oss come right after ge instead of at the end of the verb phrase?
This is the core rule for reflexive particle verbs. In Swedish, when a verb has both a reflexive pronoun (like oss) and a particle (like av), the pronoun must always be sandwiched exactly between the verb and the particle. You must say ge oss av, never "ge av oss".
Does ge oss av have a different nuance than just saying åka or gå?
Yes. While åka or gå simply mean "go" or "leave", ge sig av emphasizes the moment of departure or setting out on a journey. It feels closer to the English "head off", "set out", or "take off".
Why does the adjective mörkt have a -t at the end here?
It is agreeing with the formal subject det (it). Just like in English, Swedish uses "it" as a dummy subject for general environmental conditions or weather. Since det is a neuter pronoun, the adjective describing it must take the neuter -t ending (mörkt instead of mörk).
If I wanted to emphasize the time and start the sentence with Innan det blir mörkt, what happens to the rest of the words?