"Będziecie pływać z nami."

Translation: You will be swimming with us.

[ADJD4]

Not 'you will go swimming with us'?

[Jellei]

Just 'you will be swimming'. Your sentence is "Pójdziecie pływać z nami".

[eannaoc]

Would I be right to say that:
"Będę pływać" = I will be swimming (on more than one occasion, every so often, etc.)
"Będę płynąć" = I will be swimming (on just one future occasion)
"Będę popłynąć" = I will swim (just once, to a specific location)?

[alik1989]

Będę pływać:

• On more than one occasion, with no specified direction.

• Once, with no specified direction and usually over an extended period.

Popływam:

• Once, with no specific direction, but usually over a shorter period.

Będę płynąć:

• On one occasion, with a specified direction, with focus on the process.

Popłynę:

• On one occasion, with a specified direction.

Popłynę is a perfective form, so it doesn't have a compound future tense, as it is already a future tense form.

[F4yY9kZj]

Is 'Popływam' also perfective?

[alik1989]

Technically, yes:

http://sgjp.pl/leksemy/#263259/pop%C5%82ywa%C4%87

But I call those verbs pseudo-perfective, because they don't necessarily denote a completed action.

https://forum.duolingo.com/comment/38149782?comment_id=43290146

https://forum.duolingo.com/comment/15038447?comment_id=40477323