This is a mistake I habitually make, even though I know what the right form is.
Earlier tonight, I sent a mail to my friend to say:
で行こう！ 【いっしょで いこう】 (Let's go together!)
My friend sent back a mail :
... reminding me that
で is incorrect, and
に is the appropriate particle in this case.
Which I know is right, but the reason it's stuck in my head to use
で is that it makes more sense to me.
に is used to indicate direction of action(?), so I don't see how "going" can be directed at "together".
で makes sense to me, because my understanding of
で is that it means "by use of" or "by way of" or something like that.
So to me it makes perfect sense to say
一緒で行こう because with
で it means "let's go, and the way we'll go is together".
Can someone help me break this habit by making some kind of logical sense of why
に is right and