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← All Lessons 26–50

Minna no Nihongo - Lesson 26

Complete Grammar Lesson

Everything you need for ~んです, ~んですが, ~ていただけませんか, and 疑問詞 + ~たらいいですか, with Lesson 25 review, furigana, real-life examples, common mistakes, and practice.

How to use this lesson: Lesson 26 is not mainly about making a new verb form. It is about making your Japanese sound more natural when you explain a situation, ask why something happened, introduce a problem before making a request, or ask somebody for advice.

Lesson 26 at a glance

1. ~んです

Explain a reason, situation, background, or something the listener is expected to notice.

2. ~んですが

Give background first, then make a request, ask permission, invite, or ask advice.

3. ~ていただけませんか

A very polite way to ask someone to do something for you.

4. ~たらいいですか

Ask what you should do, where you should go, what you should buy, etc.

0. Review from Lesson 25

Before the new grammar, it helps to have two Lesson 25 conditional patterns fresh in mind: ~たら and ~ても / ~でも. These are not the new Lesson 26 grammar, but understanding them is important because Lesson 26 later uses ~たらいいですか.

A. ~たら — “if / when”

Plain past form + ら、main sentence

Use ~たら when you want to say that B happens if or when condition A is satisfied.

If I had 100 million yen, I would quit my job.

When you feel better, let's have a drink.

When I get older, I want to live in the countryside.

How flexible ~たら is: ~たら is extremely flexible. You can use it for hypothetical conditions, future events, requests, intentions, suggestions, and many everyday situations.

B. ~ても / ~でも — “even if / even though”

This pattern says that the expected result does not happen, or that the result stays the same even when the condition changes.

Verb て-form + も
い-adjective: ~くても
な-adjective / noun: ~でも

Even if I study, I don't understand.

No matter how expensive it is, I will buy it for you.

No matter how convenient it is, I won't buy a smartphone.

もし is often used with conditional sentences to emphasize “if.”
いくら~ても / でも means “no matter how much / no matter how...”.
More examples:

If you have time, please call me.


No matter how busy I am, I eat breakfast.

1. ~んです — explaining a situation

This is the central grammar of Lesson 26. The full form is ~のです, but in normal conversation ~んです is much more common.

Plain form + んです
What ~んです actually signals:
~んです does not simply mean “because.” It tells the listener: “There is some background or explanation connected to what I am saying.”

Compare:
= My head hurts. This is only a statement.
= My head hurts, you see / The thing is, my head hurts. The second sentence sounds like an explanation of the situation.

How to make ~んです

Type Normal plain form + んです
Verb くんです
Verb negative かない かないんです
Verb past った ったんです
Verb past negative かなかった かなかったんです
い-adjective さむ さむいんです
い-adjective negative さむくない さむくないんです
い-adjective past さむかった さむかったんです
い-adjective past negative さむくなかった さむくなかったんです
な-adjective きれいだ きれいなんです
な-adjective negative きれいじゃない きれいじゃないんです
な-adjective past きれいだった きれいだったんです
な-adjective past negative きれいじゃなかった きれいじゃなかったんです
Noun 病気びょうき 病気びょうきなんです
Noun negative 病気びょうきじゃない 病気びょうきじゃないんです
Noun past 病気びょうきだった 病気びょうきだったんです
Noun past negative 病気びょうきじゃなかった 病気びょうきじゃなかったんです
Very important:
With a な-adjective or noun in the present affirmative, change だ → な before んです.

❌ きれいだんです
✅ きれいなんです

病気びょうきだんです
病気びょうきなんです

When do we use ~んです?

Use 1: Give a reason or explanation

Why were you late?

The train was delayed.

Use 2: Explain what is wrong

What's wrong? / What happened?

I have a headache / My head hurts.

Use 3: Give background relevant to the conversation

I'm going home early today. — neutral fact.

I'm going home early today, you see. — gives background, often expecting the listener to understand there is a reason.

Use 4: Emphasize something that explains your behavior

The thing is, I don't have time.

The thing is, my computer isn't working properly.

Real-life conversation:

A:
Why aren't you eating lunch?

B:
I'm not very hungry right now.

2. ~んですか — asking for an explanation

When you use ~んですか, you are usually not asking for a simple yes/no fact. You are asking because you noticed something, heard something, or want more explanation.

Plain form + んですか

Example: asking about someone's ability

You notice that Yamaguchi speaks English well. You may naturally ask for the background:

Did you live abroad?

Yes, I studied in America.

Example: asking where something came from

That bag is nice.

Where did you buy it?

I bought it in Harajuku.

Example: asking why something happened

Why didn't you come to the meeting?

The trains had stopped.

Here ~んですか signals that the speaker sees a situation and wants the explanation behind it.
Be careful with ~んですか.
Because it asks for background or explanation, using it without a reason can sometimes sound too direct or intrusive.

For a simple neutral fact:
= Are you going to Japan?

When there is context and you want the story/background:
= Oh, are you going to Japan? / So you're going to Japan?

3. ~んですが — giving background before your main request

~んですが is one of the most useful patterns in polite everyday Japanese. It allows you to explain your situation first and then smoothly move to what you want to ask.

Background / situation + んですが、main request / question...
Think of it like this:
“The situation is ..., so/about that ...”

English often goes directly to the request. Japanese often sounds more natural when you first give the background using ~んですが.

Pattern A: ~んですが、~てもいいですか

I don't have the money right now. Would it be okay if I pay tomorrow?

The first part explains the problem. The second part asks permission.

Pattern B: ~んですが、~ませんか

I'm going to Christina's party too. Would you like to go together?

~んですが provides the context before the invitation.

Pattern C: ~んですが、request

I don't know how to do it. Could you please show/teach me?


I left my electronic dictionary there. Could you please look for it?

Real-life example at a station:


I want to go to Shinjuku. Which train should I take?

Notice how ~んですが introduces the situation naturally before the question.

4. ~ていただけませんか — a very polite request

Verb て-form + いただけませんか

This means approximately: “Could you please do ... for me?” It is much more polite than simply using ~てください.

Why does it mean this?
いただく is the humble form of もらう, “to receive.” Grammatically, you are asking whether you could “receive the favor” of the other person doing something. You do not need to think about this literally every time; memorize the whole request pattern.

Formation

Verb て-form Polite request
おしえます おしえて おしえていただけませんか
ます ていただけませんか
さがします さがして さがしていただけませんか
きます いて いていただけませんか
ちます って っていただけませんか

Request examples

I don't know how to do it. Could you please teach me?

Could you please look at this document before I submit it?

I left my electronic dictionary there. Could you please look for it?

Politeness comparison

Expression Approximate feeling
Teach me / Tell me. Very casual.
Please tell me. Normal polite request.
Could you tell me? Polite and softer.
Could you please tell me? More respectful / polite.
Do not translate ~いただけませんか literally as a negative question. It functions as a polite request, similar to English “Could you please...?”

5. 疑問詞 + ~たらいいですか — asking for advice

Use this when you have a problem or need advice and want to ask: “What should I do?” “Where should I go?” “What should I buy?”

Question word + Verb た-form + ら + いいですか
Building the form:
Make the verb's normal た-form, add , and then add いいですか.

べる → べた → べたら → べたらいいですか

Example 1: Where should I eat?

I'm hungry. Where should I eat?

Example 2: What should I buy?

I want to buy a souvenir. What should I buy?

Example 3: What should I do?

I've lost my passport. What should I do?

Useful question words

Japanese Meaning
What should I do?
Where should I go?
What should I buy?
Who should I ask?
When should I go?
Which train should I take?
Real-life example at work:

A:
Where should I save this file?

B:
Please save it in the shared folder.

6. How the Lesson 26 patterns work together

The most important skill in this lesson is not memorizing the patterns separately. It is learning how Japanese speakers combine them naturally.

Problem → background → request

I don't know how to do it. Could you please show me?

~んですが = background
~ていただけませんか = polite request

Problem → background → ask for advice

I lost my passport. What should I do?

This is a very natural Japanese problem-solving sentence.

Observed situation → ask for explanation

What's wrong?

I have a headache.

7. Real-life conversations

At a hotel

The Wi-Fi isn't connecting. Could you please take a look?

Yes, of course.

At work

I want to send this document today. Who should I ask to check it?

At a shop

I'd like a slightly smaller size. Do you have one?

At a station

I want to go to Kyoto. Where should I buy a ticket?

8. Common mistakes

Mistake 1: using だ before んです

Mistake 2: putting です directly before んです

Use the plain form before んです, not the ます / です form.

Mistake 3: forgetting the て-form with いただけませんか

Mistake 4: confusing ~たらいいです with ~たらいいですか

What should I buy? — asking for advice.

You should buy this / It would be good if you bought this. — giving advice.

9. Master cheat sheet

Pattern Main meaning Example
~んです Explain a situation / reason / background
~んですか Ask for explanation/background
~んですが Introduce background before request/question
~ていただけませんか Could you please...?
~たらいいですか What/where/how should I...?
The four sentences worth memorizing first:


What's wrong?


I have a headache.


Could you please tell/show me?


What should I do?

10. Practice

A. Change to ~んです

B. Complete the request

1. You don't know how to use the machine. Ask politely for help.

2. You want someone to check your Japanese.

Sample answers — other polite requests are also possible.

C. Ask for advice

Turn the situation into a natural Japanese question.

1. You lost your wallet. What should you do?

2. You want Japanese food. Where should you go?

3. You want to buy a present. What should you buy?

4. You don't understand the homework. Who should you ask?

Sample answers — the question word and the verb may vary.

D. Translate into Japanese

  1. The train was delayed.
  2. What's wrong?
  3. I don't have time.
  4. I don't know how to do it. Could you please teach me?
  5. I want to buy a souvenir. What should I buy?

Sample answers — 4 and 5 in particular allow other natural wordings.

Final memory map

When you see Lesson 26, think in this order:

1. I need to explain the situation.

2. I noticed something and want the explanation.

3. I want to give background before asking something.

4. I want to make a very polite request.

5. I need advice.