Distinguishing between んな/な, んの/の, etc


I'm learning Japanese, but I'm still very early on in my education (Rosetta
Stone, some books and a Japanese-speaking friend). I'm pretty sure I'm
grasping the basic concepts okay, but I'm having issues when hearing other
people speak the language. Specifically, right now, hearing the "ん" sound.

When hearing a word like おんなのこ spoken, how do I know this word is written
おんなのこ and not おなのこ? To me, the pronunciation is extremely similar.

Is there a rule or any tips that will help me discern when I am hearing "んな"
(" _nna_ ") as opposed to "な" (" _na_ ")? (Also "んの" instead of simply "の",
you know what I mean.)




The difference is audible as Japanese pronunciation has a rhythm based on
[morae](http://en.wikipedia.org/wiki/Mora_%28linguistics%29):

  * Every simple kana あ, ぬ, や, etc., is one mora long. (This includes ん!)

  * The contractions りゃ, ぴょ, etc. are one mora long.

  * The long vowel mark (長音符) ー (e.g. in アート) is one mora long.

  * The small つ (っ) counts one mora.

So こんにちは is five morae long and should be pronounced that way, i.e.
/ko.ɴ.ni.tɕi.wa/ and not /ko.ni.tɕi.wa/. Similarly, おんな will be pronounced
/o.ɴ.na/, not /o.na/.

If you listen closely, you should detect the difference.

N.B. The difference between の and んの is clearly audible (the latter is
pronounced twice as long as the former). The difference between んの and んお is
much subtler: [反応]{はんのう}, [銀杏]{ぎんなん} are examples, where the etymology is
clearly んお/んあ, but the words are now written んの/んな instead.




The difference is audible as Japanese pronunciation has a rhythm based on
[morae](http://en.wikipedia.org/wiki/Mora_%28linguistics%29):

  * Every simple kana あ, ぬ, や, etc., is one mora long. (This includes ん!)

  * The contractions りゃ, ぴょ, etc. are one mora long.

  * The long vowel mark (長音符) ー (e.g. in アート) is one mora long.

  * The small つ (っ) counts one mora.

So こんにちは is five morae long and should be pronounced that way, i.e.
/ko.ɴ.ni.tɕi.wa/ and not /ko.ni.tɕi.wa/. Similarly, おんな will be pronounced
/o.ɴ.na/, not /o.na/.

If you listen closely, you should detect the difference.

N.B. The difference between の and んの is clearly audible (the latter is
pronounced twice as long as the former). The difference between んの and んお is
much subtler: [反応]{はんのう}, [銀杏]{ぎんなん} are examples, where the etymology is
clearly んお/んあ, but the words are now written んの/んな instead.

