How to express "accompaniment", like I went shopping with my mum?We use the particle "と" in this case.The structure of the phrase will be in this form:[person]と[action] = did [action] together with [person]For example:I went shopping with my mum. = watashi wa haha to isshoni kaimono shimashita. = 私は母と一緒に買い物しました。(isshoni = together with) I always quarrel with my younger brother. = itsumo otouto