The role of か when 行こうか is not a question


In the sentence:

> よし じゃあ 行こうか

When the intonation of 行こうか implies an invitation and not a question, what is
the grammatical role of particle 「か」?




"か" is adding a sense of invitation to the phrase, on top of other words that
are also inviting, such as 〜う of 行こう.

行こう alone would suggest the speaker is a little more determined, and you have
a little less choice in the matter.




"か" is adding a sense of invitation to the phrase, on top of other words that
are also inviting, such as 〜う of 行こう.

行こう alone would suggest the speaker is a little more determined, and you have
a little less choice in the matter.

