I was wondering if there was some kind of rules to differentiate them, or if it was something we have to remember, like spelling in English. The same question can also extend to お vs おう ; I learned ...
I use The Kodansha Kanji Learner's Dictionary, which describes pronunciation in romaji instead of kana. I never learned romaji in a classroom, and generally only use it when reading this dictionary. ...
Why is は used at the end of こんにちは? Is the last letter the particle は, or is there a different explanation? I suppose you could equally ask "Why is こんにちは pronounced 'konnichiwa'?" - I guess gaikokujin ...