の答えは、The quick answer is yes...the more accurate answer is 'it depends'.
どっちも文法的には正しいですが、状況にもよる、ということですね。"I have no idea" is a very common phrase that could also be said as "I don't have
any idea" which means you don't know the answer/what something means.
I have no idea. やI don't have any idea. は「分からない」という意味。"I don't have an idea" is a more situation-specific phrase that requires more information: "I don't have an idea for the school play."
I don't have an idea. は for a school play など「なんの」アイデアか特定して使う、ということですね。
それでは、I have no + 物 のような使い方も出来るのでしょうか？umbrella や ticket で説明してもらいました。
As for 'I have no umbrella/ticket,' technically you can do it this way, though it isn't the most common way.
言えなくも無いけど、一般的ではない。It really depends on the noun that follows it. Normally you would use "I don't have a ticket/umbrella", but the common usage for pride would be "I have no pride".
結局、名詞の性質によります。チケットやカサの場合は、I don't have a ticket.
I don't have an umbrella.
pride (誇り）の場合は、
I have no pride.
I would say that the best rule of thumb to use would be to use "I don't have a" and then a physical object, but use "I have no" for something intangible like pride, heart, feelings, etc.
I don't have a 〜 は、物理的なモノに使いIhave no は、目に見えないもの
に使えばまず間違いない、ということです。
勉強になりました！
