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← All Lessons 26–50

Minna no Nihongo - Lesson 35

Complete Grammar Lesson

The Japanese conditionals in one place: ~ば, ~なら, ~ばいいですか, ~ば~ほど, negative conditionals, and the differences between ~と / ~たら / ~ば.

How to use this lesson: First learn how to build the ば-form. Then learn when it is natural to use it. Finally compare it with ~たら and ~と. Do not try to memorize every example at once.

Lesson 35 at a glance

1. ~ば

If A happens / if A is true, B happens.

2. ~なら

If it is N / if you mean N / speaking of N.

3. ~ばいいですか

What / where / who / how should I...?

4. ~ば~ほど

The more A happens, the more B changes.

1. How to make the ~ば conditional form

The ば-form is often called the conditional form. Its central idea is that the first clause gives a condition, and the second clause gives the result.

Condition A + ば、Result B。

Jikan ga areba, ryokō shimasu.

If I have time, I will travel.

A word about the translation: Do not translate ば mechanically as only “if”. Depending on the sentence it can sound like “if,” “when,” or “provided that.” What matters is that A is the condition for B.

Group 1 verbs (Godan verbs)

Change the final dictionary-form u-sound to the corresponding e-sound, then add .

ます-formDictionaryば-formMeaning
きますけばif one listens / asks
きますけばif one goes
みますめばif one drinks
ありますあるあればif there is / if one has
しますせばif one pushes
いますえばif one says
しますせばif one takes out / submits
ちますてばif one waits
あそびますあそあそべばif one plays
にますねばif one dies
りますればif one takes

Sound map: う→えば, く→けば, ぐ→げば, す→せば, つ→てば, ぬ→ねば, ぶ→べば, む→めば, る→れば.

Group 2 verbs (Ichidan verbs)

Remove from the dictionary form and add れば.

ます-formDictionaryば-form
べますべるべれば
れますれるれれば
つけますつけるつければ
あげますあげるあげれば
ますれば

Irregular verbs

Real-life example:

If you make a reservation, you do not have to wait.

い-adjectives

Remove the final and add ければ.

Special case: いい
いい does not become いいければ. Use its older base よい:

な-adjectives and nouns

For the affirmative condition taught in this lesson, use なら.

2. Negative conditional forms: ~なければ

Do not build this form directly from the dictionary form. Go through the plain negative first, then swap the final ~ない for ~なければ.

~ない → ~なければ
Build it in two steps




Once you can produce the plain negative, the conditional is always the same final change: ない → なければ.

Negative verbs

NegativeConditionalMeaning
かないかなければif one does not go
べないべなければif one does not eat
まないまなければif one does not drink
しないしなければif one does not do
ないなければif one does not come

Negative い-adjectives

~くない → ~くなければ

If you are not busy, may I talk to you for a moment?

Negative な-adjectives and nouns

Formal/neutral form:

Conversational form:

Which form to learn: Both forms are used. For careful study, remember でなければ as the standard structure and じゃなければ as a common spoken equivalent.
Real-life examples

If it does not arrive today, I will call the store.


If it is not clean, please wash it again.


If it is not free, I will not apply.

3. Basic use of ~ば: condition → result

Use ~ば when the first clause presents a condition that makes the second clause possible, true, or likely.

Example 1: Natural change

Aki ni nareba, ki no ha no iro ga kawarimasu.

If autumn comes, the leaves change color.

Example 2: Condition makes life easier

If the road is completed, life in the village will become more convenient.

Example 3: Possibility

If you eat it, you might come to like it.

Example 4: Meeting a deadline

If everyone comes early, we will make the 9 o'clock train.

Example 5: Adjective condition

If the answer is correct, please mark it with a circle.

Example 6: いい → よければ

If the weather is good, you can see Mt. Fuji from the rooftop.

Why the two halves connect: Notice that in many of these examples, B is not a random action. B is logically connected to A. If the weather is good, visibility improves. If the road is completed, transportation becomes easier. This cause/condition relationship is what makes ~ば feel natural.

4. ~なら: “if it is...” and “if you mean...”

~なら has two closely related uses in this lesson.

Use A: Simple noun / な-adjective condition

If this method is no good, let's try another method.

If it is about 25 meters, I can swim it.

Use B: Taking up the other person's topic

This is one of the most useful conversational meanings of なら.

Noun + なら、comment / advice / information

It often feels like:

  • If you mean N...
  • If you are talking about N...
  • As for N...

If you're talking about hot springs, Hakuba is good.

If you're staying for one week, I think Palawan or Cebu would be good.

Real-life conversation

A:
I want to eat ramen in Tokyo. Where is good?

B:
If you're talking about ramen, there are many famous shops in Shinjuku.

5. Question word + ~ばいいですか: asking what to do

This pattern asks for instructions, advice, recommendations, or the correct action.

Question word + Vば + いいですか
Natural English: Although the literal structure looks like “If I do X, is it good?”, translate it naturally as “What should I do?” “Who should I tell?” “Where should I go?”
JapaneseMeaning
What should I do?
Where should I go?
What should I buy?
Who should I ask?
When should I go?
What should I bring?

Situation: Copier is out of paper

The copier is out of paper. Who should I tell?

Situation: Going to a funeral

I'm going to a funeral. What should I bring?

Situation: Friend is getting married

My friend is getting married. What kind of thing should I give?

Useful at work:

Who should I contact if this error appears?


Where should I save this file?


By what time should I send it?

6. ~ば~ほど: “the more..., the more...”

This grammar expresses a proportional relationship: as A increases or continues, B also changes.

How the form is assembled
The same verb appears twice — once in the ば-form, once in the dictionary form — and ほど closes it.





+ +

= the more you eat

Memory hook: Vば + same V + ほど. If you can say the ば-form, you already have the whole pattern — just say the verb again and add ほど.

Verbs

Vば + same verb dictionary form + ほど

the more you eat...

the more you listen...

the more you use...

The more you eat Filipino food, the more you want to eat it.

The more you listen to this song, the more you like it.

The more garlic you add, the stronger the flavor becomes.

い-adjectives

Aければ + Aい + ほど

The cheaper it is, the better it sells.

The fewer buttons a machine has, the better.

な-adjectives

Aなら + Aな + ほど

The quieter the room is, the better.

The simpler the operation is, the easier it is to use.

What ほど adds: ほど means degree, extent, or limit. In ~ば~ほど, imagine the degree of A increasing step by step. B changes along with it.

7. ~と vs ~たら vs ~ば

These three conditionals overlap in meaning, but they are not interchangeable. The table below shows what each one actually signals.

FormMain feelingTypical use
~とWhenever A happens, B automatically / naturally happensMachines, directions, habits, natural results
~たらIf/when A happensVery flexible; requests, commands, intentions, one-time situations
~ばIf condition A is satisfied, B followsLogical conditions, requirements, general possibilities

~と: automatic result

When you press this button, the card comes out.

This sounds natural because the result is automatic.

~ば: condition

If you press this button, the card will come out.

This is also possible because pressing the button is the condition required for the result.

~たら: flexible hypothetical condition

If I do not have time, I will not eat.

If I do not have time, I will not eat.

Both can work here.

Important restriction with ~ば: When the first clause describes an intentional action by the same person, ~ば can be awkward before a command, request, invitation, or another strongly volitional expression. In these situations, ~たら is often safer and more natural for beginners.

Natural:
If you don't understand, please ask.

For Lesson 35 study, remember that ~ば is not simply interchangeable with ~たら in every sentence.
Practical beginner rule:
• Machine / automatic result → think ~と.
• Request / command / “when that happens, do...” → ~たら is often easiest.
• Logical requirement / condition → ~ば is very common.

8. Common mistakes

Mistake 1: いいければ

❌ いいければ

よければ

Mistake 2: Group 1 verb formation

くれば

けば

Mistake 3: Using ~ば everywhere ~たら can be used

They overlap, but ~たら is more flexible with commands, requests, invitations, and one-time future situations.

Mistake 4: Forgetting なら with nouns / な-adjectives

9. Real-life mini conversations

A:
What should I do after this task is finished?

B:
If you have time, please check this document too.

A:
If we're talking about spicy food, what do you recommend?

B:
If you like spicy food, I recommend this curry.

A:
If I'm going to Kyoto, when should I go?

B:
If you prefer fewer people, weekdays are good.

10. Practice

A. Change into the ば-form

  1. く → ______
  2. む → ______
  3. はなす → ______
  4. つ → ______
  5. べる → ______
  6. る → ______
  7. する → ______
  8. る → ______
  9. たかい → ______
  10. いい → ______
Show answers
  1. けば
  2. めば
  3. はなせば
  4. てば
  5. べれば
  6. れば
  7. すれば
  8. れば
  9. たかければ
  10. よければ

B. Make the negative conditional

  1. かない → ______
  2. べない → ______
  3. いそがしくない → ______
  4. たかくない → ______
  5. 無料むりょうではない → ______
Show answers
  1. かなければ
  2. べなければ
  3. いそがしくなければ
  4. たかくなければ
  5. 無料むりょうでなければ

C. Translate into Japanese

  1. If the weather is good, I will go.
  2. If it is not expensive, I will buy it.
  3. What should I do?
  4. Who should I ask?
  5. If you're talking about hot springs, Hakuba is good.
  6. The more you study, the more you understand.
Show sample answers
  1. 天気てんきがよければ、きます。
  2. たかくなければ、います。
  3. どうすればいいですか。
  4. だれけばいいですか。
  5. 温泉おんせんなら、白馬はくばがいいですよ。
  6. 勉強べんきょうすればするほど、よくかるようになります。

11. Final memory sheet

GrammarPatternMeaning
Verb conditionalく → けばif one goes
Group 2 conditionalべる → べればif one eats
Irregularする→すれば / る→ればif one does / comes
い-adjectiveたかい → たかければif it is expensive/high
いいいい → よければif it is good
Negative~ない → ~なければif not...
Noun / な-adj.N / A + ならif it is... / speaking of...
Advice question疑問詞ぎもんし + Vばいいですかwhat/how/where should I...?
Proportional changeVばVるほどthe more..., the more...