"I enter the bank."
I think when we use を入る we are talking about a mean of the entering action, rather than its ultimate destination. Use of を is hence associated with things like an entrance, a door, a passage, a bridge, a landscape, etc.
This does not really "remove" the need to use に because the destination is not provided. My example only tells you I enter by a certain entrance (The bank's front entrance) but not where I enter into (of course, it's understood, and where else can it be?)
Does anyone have more context on this?
From Tae Kim's article on transitive/intransitive verbs: "The only time you can use the 「を」 particle for intransitive verbs is when a location is the direct object of a motion verb as briefly described in the previous section."
I appreciate this is the reason を can be used to 出る, despite 出る being an intransitive verb. However, I don't understand why the same doesn't hold true on 入る. Surely 入る is another intransitive verb, also describing a motion. The bank, in this case, would surely be the "direct object of the motion" and therefore could be designated with を. And yet...
(viz. Keith's suggestion, I don't think を could be used to describe the "how" of entering in this scenario. で would be the most appropriate particle for that, I would have thought.)
As I have told in other threads I am just another learner. The explanation I shared above is not my own internalization but what I have learned from other internet resources in Japanese.
Perhaps I did not express well but it is a misunderstanding if anybody would think I said を meant 'how' or had any hint associated with 'how'.
Every time I share native Japanese links directly I receive some down arrows. So I am thinking they are not welcomed. But if you want to read it I do have one about this to share. Associating 自/他動詞 with intransitive/transitive verb is a convenience for learning, but to a certain point it starts to be in our way for deeper understanding. After all these are not perfectly identical concepts.
From what I've read, ni is used for destination and for location of existence (also for time expressions). In this case, if you enter the bank, you had a destination (the bank). If you exit the bank, you don't end up anywhere, so you can't use ni. There are other explanations concerning transitive and intransitive, but the destination one works for me.
入り has sounding like 「いる」and 「はいる」 It's like 2 different words, I guess, but they are still synonyms. Check the link: https://jisho.org/search/%E5%85%A5%E3%82%8A%E3%80%80%23kanji