How to use n desu

by Cathy

How to use ~んです?

How to use ~んです?

How to use the sentence pattern "n desu"?


Hi Cathy, I believed you are asking about the usage of the following expressions:

Plain form のですか
Plain form のです

Note: Plain form means it can be plain form of verb, adjective and noun. But for plain form of both na-adjective and noun, instead of ending with だ (da), it need to change to な (na). Plain form 「だ」 → Plain form 「な」.

In general, while in conversation the above sentence pattern will change to:

Plain form んです

That means when talking, native Japanese normally use 「~んです」 instead of 「~のです」.

This sentence pattern is used when the speaker explains to the listener the reason for his own words and deeds, while an interrogative sentence in this form is used when the speaker is asking for an explanation of what the listener has done.

A: あなたはビールを飲まないんですか
anata wa bi-ru wo nomanai n desu ka
Meaning: Don't you drink beer?

B: ええ、きらいなんです
ee, kirai na n desu
Meaning: No, I don't like it.

To use this sentence pattern "n desu", something should be obvious, something you have seen or heard. For the above example, it's obvious that the speaker noticed that the listener is not drinking beer and ask the question. And this sentence pattern always shows the speaker's curiosity or interest in the question.

Actually it's not a mistake if you omit ん (n) or の (no) in the above case. But it's just not natural for native Japanese.

Thanks for asking this question. I will probably explain it in more details in one of the intermediate lesson I will be doing.

Related Pages
Refer to this page for Japanese plain form.
Intermediate lesson 3: Japanese Sentence no desu.

Hope this helps,
Kia Leng

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New Intemediate Japanese lesson on no desu
by: Kia Leng

A new intermediate lesson on Plain form のです (Plain form no desu) was just added.

Here is the link:
Japanese sentence Plain form no desu

Question for the use of んです form
by: Anonymous

Does the conversation in んです form have to start by a question? Can I not simply start with a statement?
For ex. : 今日はとっても寒いんですね。

Question for the use of んです form
by: Kia Leng


while んです is commonly used in the form of question, I think it's fine to start with a statement as this will make the statement more explanatory and emphasize more on what you want to say.

Best Regards,
Kia Leng

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