Explaining: n da
The n/no explanatory frame in four forms: statement, question, soft lead-in and conclusion. All four share one base sentence.
n da
polite n desuit's that... (explaining)
んだ んです
Frames a statement as the explanation or background to the situation: giving reasons, sharing news, or showing you're personally involved.
atama itai n da
My head hurts, you see.
頭痛いんだ
atama ga itai n desu
I have a headache, you see.
頭が痛いんです
After nouns and na-adjectives it becomes na n da (yasumi na n da). As a question, use no? (casual) or n desu ka (polite); casual n da? sounds rough. n desu ka about someone's actions can sound like a challenge (nani shite iru n desu ka?).
no?
polite n desu kais it that...? (casual question)
の? んですか
The everyday casual question that asks about the situation or for an explanation (doushita no?, doko iku no?). It is said with a rising tone and used by everyone.
atama itai no?
Does your head hurt?
頭痛いの?
atama ga itai n desu ka?
Does your head hurt?
頭が痛いんですか?
With a falling tone (atama itai no), it is a soft, feminine-leaning statement version of n da.
Learn alongside: n da, n da kedo, wake da, n da yo (Stage 3)Learn first: n da
n da kedo
polite n desu kedothe thing is... (lead-in)
んだけど んですけど
Sets out the background and trails off so the listener can offer help. It is the soft way to open a request, a question or a new topic.
chotto atama itai n da kedo
My head kind of hurts, so...
ちょっと頭痛いんだけど
chotto atama ga itai n desu kedo
I have a bit of a headache, so...
ちょっと頭が痛いんですけど
Leave the request unsaid, because the listener fills it in. The polite form is the classic opener with clerks.
Learn alongside: n da, no?, wake da, n da yo (Stage 3)Learn first: n da, -kedo
wake da
polite wake desuso that's why / no wonder
わけだ わけです
Draws the conclusion once the reason is known ('no wonder', 'which means'). It is common as sou iu wake (so that's how it is). dou iu wake? demands an explanation (what's going on here?!); the neutral question is dou iu koto?
dakara atama itai wake da
So that's why your head hurts.
だから頭痛いわけだ
dakara atama ga itai wake desu ne
So that's why your head hurts.
だから頭が痛いわけですね
Don't confuse it with wake ja nai (it's not that...), which is a separate item.
Learn alongside: n da, no?, n da kedo, n da yo (Stage 3)Learn first: n da