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which connotation gives to a phrase ending with "na" instead of "ne"? is it
more informal or what?

Particulary saying,

"soo da naa" instead of "so desu ne"
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2016-08-05T18:46:43.780
38244
2016-08-06T01:38:48.710
9878
question
particles sentence-final-particles particle-な particle-ね
ending na instead of ne, when to use it?
`「な」`and `「ね」` seem to be more rough sound and generally applies to the male
gender but is not necessarily restricted to only males. You can think of it as
"huh". e.g.

> 洋介：今、図書館に行くんだよ **な** 。

Yousuke: You are going to the library now **huh**?

or

> ボブ：日本語は、たくさん勉強したけど **な** 。まだ全然わからない。

Bob: I studied Japanese a lot, **right**? But, I still don't get it at all.

In your case, `「そうだな」` or `「そうですね」` would roughly mean "Is that so, huh?"
CC BY-SA 3.0
2016-08-06T01:38:48.710
38257
2016-08-06T01:38:48.710
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38244
answer