We will respond to the question with ～んです and an answer of our own design.

The ～んです form, like は and が before it, can be somewhat hard to know when to use properly. Naturally, what is an explanation and what is a statement of fact can be subjective. You will very often hear this form used in casual (and formal) speech with sentences that do not obviously seem to be explanations. The better way to think about the ～んです form is to consider that it gives an air of explanation to a statement and less that it turns something into an explanation. In this way, the ～んです form can be combined with other phrases and sentence structures to express anything ranging from apology to explanation to deductions and so on.

As we learned in the textbook, you can use の instead of ん in ～んです constructions. This is more common in written Japanese, and it is more formal to use の than the abbreviated ん.

This question is asking us why we do a part time job. We will answer that it is because we do not have much money.

あまりお金がないんです。

We will respond to the question with ～んです and an answer of our own design.

The ～んです form, like は and が before it, can be somewhat hard to know when to use properly. Naturally, what is an explanation and what is a statement of fact can be subjective. You will very often hear this form used in casual (and formal) speech with sentences that do not obviously seem to be explanations. The better way to think about the ～んです form is to consider that it gives an air of explanation to a statement and less that it turns something into an explanation. In this way, the ～んです form can be combined with other phrases and sentence structures to express anything ranging from apology to explanation to deductions and so on.

As we learned in the textbook, you can use の instead of ん in ～んです constructions. This is more common in written Japanese, and it is more formal to use の than the abbreviated ん.

This question is asking us why we skipped class yesterday. We will answer that it was because we had a date.
デートをしたんです。

We will respond to the question with ～んです and an answer of our own design.

The ～んです form, like は and が before it, can be somewhat hard to know when to use properly. Naturally, what is an explanation and what is a statement of fact can be subjective. You will very often hear this form used in casual (and formal) speech with sentences that do not obviously seem to be explanations. The better way to think about the ～んです form is to consider that it gives an air of explanation to a statement and less that it turns something into an explanation. In this way, the ～んです form can be combined with other phrases and sentence structures to express anything ranging from apology to explanation to deductions and so on.

As we learned in the textbook, you can use の instead of ん in ～んです constructions. This is more common in written Japanese, and it is more formal to use の than the abbreviated ん.

The question is asking us why we are exhausted. We will say it is because we worked a lot yesterday.

昨日、たくさん働いたんです。
（きのう、たくさんはたらいたんです。）

We will respond to the question with ～んです and an answer of our own design.

The ～んです form, like は and が before it, can be somewhat hard to know when to use properly. Naturally, what is an explanation and what is a statement of fact can be subjective. You will very often hear this form used in casual (and formal) speech with sentences that do not obviously seem to be explanations. The better way to think about the ～んです form is to consider that it gives an air of explanation to a statement and less that it turns something into an explanation. In this way, the ～んです form can be combined with other phrases and sentence structures to express anything ranging from apology to explanation to deductions and so on.

As we learned in the textbook, you can use の instead of ん in ～んです constructions. This is more common in written Japanese, and it is more formal to use の than the abbreviated ん.

This question is asking us why we are nervous. We will answer that it is because we have a test tomorrow.

明日は試験があるんです。
（あしたはしけんがあるんです。）