Describing a noun
Structure
[い]Adjective + NounExamples:
かわいい + 猫
新しい + 車
寒い + 冬
“面白い - The い is outside the kanji, so it is definitely an い-Adjective.
綺麗 - The い is inside of the kanji, so it is definitely not an い-Adjective.
There are some, but very few exceptions.
嫌い - The い is outside of the kanji, but this is actually a な-Adjective.”
So…. There are some, but very exceptions of what exactly?
Where the い is inside the kanji and it is an い-adjective? That doesn’t seem to make sense, but that is what it seems to say.
Where the い is outside the kanji, but it is actually a な-adjective? That would make sense, but if so I would suggest rewriting the section as:
“面白い - The い is outside the kanji, so it is definitely an い-Adjective.
綺麗 - The い is inside of the kanji, so it is definitely not an い-Adjective.
嫌い - The い is outside of the kanji, but this is actually a な-Adjective.
There are some, but very few exceptions, of an なーadjective where い is outside the kanji.”
I think it’s pretty clear what it’s saying.
If the “i” is outside the kanji than it’s probably an i-adjective. i-adjectives will always have the “i” outside the kanji. There are some exceptions where the “i” is outside the kanji and is a na-adjective though, so be careful. That said, less than 1% of na-adjectives are like that. So you can just assume if an adjective has “i” outside the kanji it’s an i-adjective, and just memorize the few that break that rule and are actually na-adjectives, such as “kirai”
If it’s inside the kanji it’s definitely not an i-adjective