All Blogs
Do You Really Need JLPT N2 for Gijinkoku Visa? Full Explanation (No Confusion) Japan Work Visa New Rules 2026: What Changed for Gijinkoku Visa? How to Renew a Japan Work Visa — How to Fill the Application Form + Complete Guide (Excel/PDF Download) Practical Guide to Landing IT Jobs in Japan Without Japanese Skills How I Found My First Web Developer Job in Japan Without Speaking Japanese Japan Work Visa Requirements: What You Need to Know The Best Cities to Work in Japan for Foreigners Hand-Cash Jobs in Japan: Timing, Risks & Visa Impact Top 10 Companies Hiring Foreigners in Japan Right Now
Menu

← All Lessons 26–50

Minna no Nihongo - Lesson 45

Complete Grammar Lesson

Conditions and contrast: ～場合ばあいは and ～のに, with furigana, natural examples, grammar comparisons, common mistakes, real-life conversations, and practice.

The two main ideas in Lesson 45 are very different:
～場合ばあいは prepares for a possible situation: “In case this happens, do this.”
～のに expresses a result that goes against expectation: “Even though this was true, something unexpected happened.”

0. Quick review from the previous lesson

Before Lesson 45, it is useful to remember the following expressions because they often appear together with the new grammar.

～すぎます

Means “too much / excessively.”

I drank too much alcohol yesterday.

～やすい / ～にくい

Means “easy to do / difficult to do.”

This application is easy to use.

～にします

Can mean “make something become…” or “choose/decide on…”.

I will make the room clean.

I'll take the single room.

Adverb form + verb

Adjectives can describe how an action is done.

Please cut the vegetables into small pieces.

1. ～場合ばあいは — “in case / in the event that”

場合ばあい literally means a case, situation, circumstance, or event.

The grammar ～場合ばあいは is used when you imagine a possible situation and explain what should happen, what someone should do, or how to deal with it.

Situation + 場合ばあいは、Action / Response
Where you meet this grammar:
Think of this grammar as an instruction manual, emergency notice, company rule, customer-service explanation, or practical contingency plan.

“If this particular situation happens, here is what you should do.”

How to form ～場合は

Type Formation Example Meaning
Verb Plain form + 場合は in case you cancel
Verb negative ない-form + 場合は in case it cannot be found
Verb past た-form + 場合は in case a fire occurs / has occurred
い-adjective い-adjective + 場合は if the fever is high
な-adjective な-adjective + な + 場合は if it is necessary
Noun Noun + の + 場合は in case of an earthquake
Remember these connectors:
な-adjective → な場合は
Noun → の場合は

Do not say: 必要の場合は when you mean the adjective . The natural form is .

Verb examples

Canceling a reservation

Yoyaku o kyanseru suru baai wa, itsudemo renraku shite kudasai.

If you need to cancel the reservation, please contact us at any time.

Emergency situation

Kaji ga okita baai wa, sugu hyakujūkyū-ban ni denwa shite kudasai.

In case of a fire, call 119 immediately.

Something cannot be found

Hanko ga mitsukaranai baai wa, dō sureba ii desu ka.

What should I do if I cannot find my personal seal?

Adjective and noun examples

な-adjective

If you need a receipt, please tell a staff member.

い-adjective

If your fever is high, please take this medicine.

Noun

In case of an earthquake, escape through the emergency exit.

More real-life examples

If you forget your password, click “Forgot your password?”

If the train is delayed, I will contact the company.

If there is a problem with the product, it can be returned.

In case of rain, the event will be canceled.

～場合は vs ～たら

Both can sometimes be translated as “if,” but they do not always feel the same.

Grammar Typical feeling Common situation
～たら General, conversational “if/when” Daily conversation and personal situations
～場合は “In the event/case that…” Rules, warnings, instructions, procedures, formal explanations

If you don't understand, please ask. normal daily conversation

If you do not understand how to operate the system, please contact support. instruction/manual style

Useful rule: if you can imagine the sentence appearing in a manual, notice, emergency instruction, company rule, FAQ, or support page, ～場合は is often a very natural choice.

2. ～のに — “even though / although / despite the fact that”

～のに connects two clauses when the second result is different from what would normally be expected from the first clause.

Expected situation + のに、Unexpected / disappointing result
The feeling behind ～のに:
～のに often carries the speaker's feelings: disappointment, frustration, surprise, dissatisfaction, or “Why did this happen?”

The basic mental pattern is: “Because A is true, I naturally expected B. But the actual result was not B.”

How to form ～のに

Type Formation Example Meaning
Verb Plain form + のに even though [someone] promised
Verb negative ない-form + のに even though [someone] does not eat
い-adjective い-adjective + のに even though it is expensive
な-adjective な-adjective + な + のに even though [someone] is skillful
Noun Noun + な + のに even though it is a day off
Important:
な-adjective → なのに
Noun → なのに

For example:
= even though it is quiet
= even though it is Sunday

Verb examples

Expected: he promised → therefore he should come

Yakusoku shita noni, kare wa kimasen deshita.

He didn't come even though he promised.

You were told not to do something, but you did it anyway

Even though I told you not to eat the cake, why did you eat it?

A usual expectation was not met

My mother usually makes me a lunch every day, but today she didn't.

Adjective and noun examples

Even though both of my parents are tall, I am short.

Even though this car was expensive, it breaks down often.

Even though she was the most skillful, she did not get first place.

Even though today is my day off, I have to work.

More real-life examples

Even though I studied a lot, I failed the exam.

Even though this is a new computer, it is very slow.

Even though it is close to the station, the rent is cheap.

Important nuance: ～のに is often used for negative/disappointing results, but the unexpected result does not have to be objectively bad. It can also express pleasant surprise.


“It's close to the station, and yet the rent is cheap.”

3. ～のに vs ～が / ～けど vs ～ても

All three can connect contrasting ideas, but the speaker's meaning is different.

Grammar Main idea Speaker feeling
～が / ～けど A, but B Usually neutral contrast
～ても Even if / even when A happens, B still happens Condition/concession
～のに Even though A is actually true, unexpected B happened Surprise, dissatisfaction, disappointment, unexpectedness

A. ～が / ～けど — simple contrast

This room is large, but it is dark.

This simply tells us two contrasting facts. A large room is not automatically expected to be bright, so が is the safest neutral connector.

B. ～ても — “even if”

Even if we add more windows, I think this room will still be dark.

～ても is especially useful for a hypothetical concession: “Even if A happens, B will still be true.”

C. ～のに — actual fact + unexpected result

Even though this room has many windows, it is dark.

The many windows are already a fact. Because many windows normally make a room bright, the darkness goes against the speaker's expectation. That is why ～のに is natural.

Compare the same basic information

This house is old, but it is beautiful/clean. neutral contrast

Even though this house is old, it is very beautiful/clean. unexpected positive result

～のに can be used here if the speaker really sees “old → probably not so clean/beautiful” as the normal expectation. That expectation is what makes the second result surprising.

4. Understanding expectation with ～のに

To decide whether ～のに is natural, ask yourself this question:

“Does the first clause normally create an expectation about what should happen next?”

Expected result: the person should keep the promise / come.

The actual result violates the expectation → natural use of のに.

Expected result: it should be reliable / good quality.

The expensive car breaks down often → unexpected → のに.

5. Real-life mini conversations

At a hotel

A: What should I do if I need to cancel my reservation?

B: Please call us by the day before.

At work

A: What do we do if we cannot log in to the system?

B: Please contact the administrator.

After buying an expensive device

A: How is this smartphone?

B: Even though it was expensive, the battery runs out very quickly.

Study situation

A: How was the exam?

B: Even though I studied every day, I couldn't do very well.

6. Common mistakes

Mistake 1: forgetting の with a noun before 場合

Wrong:
Correct:
Mistake 2: forgetting な with a な-adjective before 場合

Wrong:
Correct:
Mistake 3: forgetting な before のに with nouns and な-adjectives


Mistake 4: using のに for every sentence containing “but”

～のに is not just a replacement for “but.” There should normally be some relationship of expectation → unexpected result.
Mistake 5: confusing のに and ても

～のに: A is an actual fact, but the result is unexpected.
～ても: Even if A happens, B will still happen / be true.

7. Quick cheat sheet

Grammar Formation Main meaning
V + 場合は Plain verb + 場合は In case the action/situation happens
い-adj + 場合は い-adjective + 場合は If that adjective condition applies
な-adj + 場合は な-adjective + な場合は If that adjective condition applies
N + 場合は Noun + の場合は In the case of N
V + のに Plain verb + のに Even though A happened/is true...
い-adj + のに い-adjective + のに Even though it is...
な-adj + のに な-adjective + なのに Even though it is...
N + のに Noun + なのに Even though it is N...

8. Practice

A. Complete with ～場合は

Sample answers — other completions that fit the situation are also correct.

  1. の →
  2. な →
  3. Already correct:

B. Complete with ～のに

Sample answers — other completions that fit the situation are also correct.

  1. のに →
  2. のに →
  3. なのに →

C. Choose が, ても, or のに

  1. This room is big, but dark. Just state the two facts.
  2. Even if it rains tomorrow, I will go.
  3. I studied a lot, so I expected to pass, but I failed.
  1. が → simple contrast.
  2. ても → = even if it rains.
  3. のに → = even though I studied.

D. Translate into Japanese

  1. If there is a problem, please contact support.
  2. In case of an earthquake, use the emergency stairs.
  3. Even though this restaurant is expensive, the food is not very good.
  4. Even though I got up early, I missed the train.
  5. If you cannot log in, what should you do?

Sample answers — other natural wordings are also correct.

9. Final memory rule

“If this situation occurs, what should happen next?”

Think: rules, instructions, procedures, emergencies, possible situations.

“A was true, so I expected B — but reality was different.”

Think: unexpected result, surprise, disappointment, frustration, contrast against expectation.