What's the structure of this lyric sentence? 「置いてかなくちゃいけないのかな」


The sentence is:

> [明日]{あした}の[入]{い}り[口]{ぐち}に、[置]{お}いてかなくちゃいけないのかな？

Now I know the former part is "tomorrow, at the entrance (of our school)", and
the following phrases:

おく ーー 置いて, to put,

かな ーー is it so?

but I have no idea how to split the remaining of the latter part into pieces.

[置]{お}いて / **かなくちゃいけないの** / かな




First, 明日の入り口 probably translates literally (and somewhat poetically) to
“tomorrow’s entrance.” Second, I think that the line breaks up into 置いて + か +
なくちゃいけない + の + かな, with なくちゃいけない meaning “have to do” in this case. So the
line translates roughly to, “I guess that we have to leave [these things]
behind at the entrance to tomorrow.”

(I assume that this lyric is from 天使にふれたよ by HTT.)




First, 明日の入り口 probably translates literally (and somewhat poetically) to
“tomorrow’s entrance.” Second, I think that the line breaks up into 置いて + か +
なくちゃいけない + の + かな, with なくちゃいけない meaning “have to do” in this case. So the
line translates roughly to, “I guess that we have to leave [these things]
behind at the entrance to tomorrow.”

(I assume that this lyric is from 天使にふれたよ by HTT.)

