使い方・接続
Verb + ん(1) + だ
[い]Adjective + ん(1) + だ
[な]Adjective + な + ん(1) + だ
Noun + な + ん(1) + だ
(1) の
詳細
表現
助動詞
一般
「~んです・のです」の情報
のです is a construction with several different forms, each meaning roughly the same thing. This expression behaves similarly to だ and です by themselves (asserting that something is true). However, the addition of の strengthens the relationship being highlighted. Due to this, it will come across a bit like 'it is a fact that (A)' in English.
In these sentences, we can think of the ん, or の as simply adding emphasis to the statement. Due to の adding emphasis, this expression will be heard very frequently in explanations.
Caution
There is no real difference between ん and の. Only の is considered 'correct Japanese', but ん evolved to make things easier to say. ん is the most common form in spoken Japanese, and the use of の could be considered a bit formal, or 'stiff'.
While both the だ and です forms are equally as natural, only the です form will be used if adding か to the end ~んですか. This construction shows that the speaker is looking for an explanation about something.
トピック
Context is King
N5 Topic
In this Topic, we're going to learn about a new use of の (often shortened to ん in speech). We'll see how it is used to explain and give contextual reasons for things. As an extension of this, we'll also see how it works with questions.
関連
単語 網羅率
このアイテムに記載されているすべての単語。
例文
--:--
いいんですか。
Is it good?
赤がいいんですか。
Is red good?
いいのですか。
Is it good?
これがいいのですか。
Is this good?
川があるんです。
There is a river.
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プレミアムユーザーは全文法ポイントに含まれる12個の例文にアクセスすることできます。
自作の例文
オンライン
~んです/~のです- Japanese Grammar
Japanization
Explanations and expectations
Tae Kim's Guide to Learning Japanese
Explanatory のだ (んだ)
Wasabi
When and how to use ん
Maggie Sensei
オフライン
[DBJG] A Dictionary of Basic Japanese Grammar
Page 325
[DBJG] A Dictionary of Basic Japanese Grammar
Page 322
Genki I
Page 230
Genki I 2nd Edition
Page 270
Genki I 3rd Edition
Page 276
Marugoto Elementary 1 (A2) Rikai
Page 154
Tae Kim's Japanese Grammar Guide
Page 73
みんなの日本語 II
Page 12 [CH 26]
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「~んです・のです」に関する文法ディスカッション
最近の返信 (合計40件)

PapaYeti
Thanks!

AshleyAutumn
So I’m a bit confused about one of the review questions for this topic. It has the word "覚える” - “to remember” and I always get it wrong because I’m used to it as a verb but in this case it’s conjugating with ”です” like a noun or adjective. Is this because it’s more like a state of being for the speaker than an active action? Or is the there something special about "ん・の” connector?

Pablunpro
Hi! 初めまして!
I guess you are referring to the example sentence ‘覚えるんです’. If you look at it closely, you will see that 覚える still works as a verb and that んです (the subject of this grammar point) is attached to the verb to give emphasis to the statement ‘覚える’ (I will remember), adding the nuance ‘it is a fact that I will remember’ or ‘The thing is that I will remember’.
In fact, this is the exact same usage as the last example, ‘忘れるのです’ (‘it is a fact that I will forget’).
HTH!