なら (nara) - If (contextual) | Japanese Grammar Documentation

What is なら Conditional?

なら expresses conditions based on given information or context. It means "if (that's the case)," "if it's about," or "speaking of." It's used for giving advice, making suggestions, or adding information based on what was just said.

A: 東京に行くんだ
   "I'm going to Tokyo"

B: 東京なら、いいレストラン知ってるよ
   "If it's Tokyo, I know a good restaurant"

日本語を勉強するなら、毎日練習したほうがいい
"If you're studying Japanese, you should practice daily"

Formation

Pattern: Plain form + なら

With verbs:

行く → 行くなら (If you're going)
食べる → 食べるなら (If you're eating)
した → したなら (If you did)

With adjectives:

い-adjectives: 安い → 安いなら (If it's cheap)
な-adjectives: 便利 → 便利なら (If it's convenient)

With nouns:

学生 → 学生なら (If you're a student)
東京 → 東京なら (If it's Tokyo)
明日 → 明日なら (If it's tomorrow)

Basic Usage

Giving advice based on context

A: 日本に行きたい
   "I want to go to Japan"

B: 日本に行くなら、春がいいよ
   "If you're going to Japan, spring is good"

Making suggestions

A: お腹空いた
   "I'm hungry"

B: お腹空いたなら、何か食べたら？
   "If you're hungry, how about eating something?"

Adding information

A: これ、どこで買える？
   "Where can I buy this?"

B: それなら、駅前のお店にあるよ
   "If it's that, there's some at the shop in front of the station"

Key Characteristics

Based on given information

Responds to what someone just said
"If that's what you're saying..."
"If it's about that topic..."

Not for hypothetical futures like たら

Topic-oriented

Tokyo → About Tokyo
Student → As a student
That → If it's that

Focuses on the topic, not hypothetical

Cannot express discovery

Wrong: 家に帰るなら、猫が寝ていた ❌
Right: 家に帰ったら、猫が寝ていた ✓
"When I got home, the cat was sleeping"

なら is not for unexpected discoveries

Common Conversations

Example 1: Giving Advice

A: 日本語、難しいな
   "Japanese is difficult"

B: 難しいなら、先生に聞いたほうがいいよ
   "If it's difficult, you should ask a teacher"

A: そうだね
   "You're right"

Example 2: Making Suggestions

A: 明日、時間ある？
   "Do you have time tomorrow?"

B: 明日なら、午後は空いてるよ
   "If it's tomorrow, I'm free in the afternoon"

A: じゃあ、会おう
   "Then, let's meet"

Example 3: Topic-based Response

A: いいカフェ知らない？
   "Do you know a good cafe?"

B: カフェなら、駅の近くに新しいのができたよ
   "If it's a cafe, a new one opened near the station"

Common Mistakes

Mistake 1: Using for hypothetical future

Less natural: 明日雨なら、中止 ⚠️
More natural: 明日雨だったら、中止 ✓
"If it rains tomorrow, cancelled"

Use たら for hypothetical future!

Mistake 2: Using for discoveries

Wrong: ドアを開けるなら、誰もいなかった ❌
Right: ドアを開けたら、誰もいなかった ✓
"When I opened the door, no one was there"

なら can't express unexpected results!

Mistake 3: Wrong context

Unnatural: 春になるなら、桜が咲く ⚠️
Natural: 春になると、桜が咲く ✓
"When spring comes, cherry blossoms bloom"

なら is for contextual, not natural consequences!

なら vs Other Conditionals

なら - Based on context

A: 東京に行く
B: 東京なら、知ってる
"If it's Tokyo, I know about it"

Responding to given information

たら - Hypothetical

東京に行ったら、教えて
"If/when you go to Tokyo, let me know"

Future hypothetical

ば - General condition

東京に行けば、楽しい
"If you go to Tokyo, it's fun"

General conditional

と - Natural consequence

東京に行くと、人が多い
"When you go to Tokyo, there are many people"

Automatic result

Common Patterns

～なら、～ほうがいい (Advice)

勉強するなら、静かな場所のほうがいい
"If you're studying, a quiet place is better"

買うなら、この店のほうがいい
"If you're buying, this shop is better"

それなら / そうなら (If that's the case)

A: 疲れた
   "I'm tired"

B: それなら、休んだら？
   "If that's the case, how about resting?"

Very common response pattern!

だったら (Casual form)

暇だったら、来てね
"If you're free, come over"

行くなら → 行くんだったら (more casual)

Giving Recommendations

Based on topics

寿司なら、あの店がおいしいよ
"If it's sushi, that shop is delicious"

映画なら、これがおすすめです
"If it's movies, I recommend this one"

旅行なら、京都がいいと思う
"If it's travel, I think Kyoto is good"

Offering Help

Based on ability/knowledge

日本語なら、教えられるよ
"If it's Japanese, I can teach you"

パソコンのことなら、分かります
"If it's about computers, I understand"

料理なら、得意です
"If it's cooking, I'm good at it"

なら in Different Contexts

明日なら、大丈夫です
"If it's tomorrow, it's fine"

来週なら、行けます
"If it's next week, I can go"

午後なら、空いてます
"If it's the afternoon, I'm free"

日本なら、行ったことある
"If it's Japan, I've been there"

この辺なら、詳しいよ
"If it's around here, I know it well"

図書館なら、近くにある
"If it's a library, there's one nearby"

彼なら、知ってるはず
"If it's him, he should know"

先生なら、教えてくれる
"If it's the teacher, they'll teach you"

Casual Spoken Forms

んだったら (Casual)

行くなら → 行くんだったら
"If you're going"

忙しいなら → 忙しいんだったら
"If you're busy"

More conversational

だったら alone

A: 疲れた
B: だったら、休めば？
"If so, how about resting?"

Very casual, "if so"

Expressing Conditions for Advice

なら + should/had better

痩せたいなら、運動したほうがいい
"If you want to lose weight, you should exercise"

成功したいなら、努力しなきゃ
"If you want to succeed, you have to make an effort"

日本に住むなら、日本語を勉強すべきだ
"If you're living in Japan, you should study Japanese"

Contrasting with Other Options

A なら A で、B なら B で

行くなら行くで、早く決めて
"If you're going, then going is fine, but decide quickly"

やるならやるで、ちゃんとやって
"If you're doing it, then do it properly"

なら with Questions

Asking based on context

日本に行くなら、どこに行きたい？
"If you're going to Japan, where do you want to go?"

勉強するなら、何を勉強する？
"If you're studying, what will you study?"

Negative なら

If not

行かないなら、教えて
"If you're not going, let me know"

要らないなら、捨てるよ
"If you don't need it, I'll throw it away"

分からないなら、聞いてね
"If you don't understand, ask me"

Polite Forms

Formal なら

お時間があるなら、ご説明いたします
"If you have time, I'll explain"

ご質問があるなら、お答えします
"If you have questions, I'll answer"

Common Set Phrases

もし～なら (If)

もし暇なら、手伝って
"If you're free, help me"

もし分からないなら、聞いて
"If you don't understand, ask"

Adds emphasis to condition

～というなら (If you say)

そう言うなら、信じる
"If you say so, I'll believe it"

行きたくないというなら、無理に行かなくていい
"If you say you don't want to go, you don't have to force yourself"

Responding to Statements

Natural responses with なら

A: 明日、買い物に行く
   "I'm going shopping tomorrow"

B: 買い物に行くなら、これも買ってきて
   "If you're going shopping, buy this too"

Based on what A said

Emphasis Patterns

それならば (Formal)

それならば、お手伝いいたします
"If that's the case, I'll help"

More formal than それなら

When なら Works Best

Use なら for:

✓ Responding to given information
✓ Giving advice/suggestions
✓ Talking about topics
✓ "If it's about X..."
✓ "If that's the case..."
✓ Offering help based on ability

Don't use なら for:

✗ Hypothetical future events (use たら)
✗ Natural consequences (use と)
✗ Discovery/unexpected results
✗ Scientific facts
✗ Sequential actions

Comparison Summary

Quick decision guide

Given info/advice → なら
"You said Tokyo? If it's Tokyo, I know..."

Hypothetical future → たら
"If it rains tomorrow..."

General condition → ば
"If you study hard..."

Natural result → と
"When spring comes, flowers bloom"

Practice Sentences

Basic

東京なら、知ってるよ
"If it's Tokyo, I know about it"

暇なら、手伝って
"If you're free, help me"

それなら、大丈夫です
"If that's the case, it's fine"

Intermediate

日本語を勉強するなら、毎日練習したほうがいいですよ
"If you're studying Japanese, you should practice every day"

痩せたいなら、もっと運動して、
食事にも気をつけたほうがいい
"If you want to lose weight, you should exercise more
and pay attention to your diet"

時間があるなら、ゆっくり話しませんか
"If you have time, won't you talk leisurely?"

Advanced

もし本気で成功したいなら、今の生活を
見直す必要がある。そして、目標に向かって
毎日努力し続けなければならない。
"If you seriously want to succeed, you need to
review your current lifestyle. And you must
continue to make efforts every day toward your goal."

日本で働きたいというなら、まず日本語を
マスターすることが最優先です。それから、
日本の文化やビジネスマナーについても
学ぶべきでしょう。
"If you say you want to work in Japan, mastering
Japanese is the top priority first. After that,
you should also learn about Japanese culture
and business manners."

たら conditional - Hypothetical/sequential
ば conditional - General condition
と conditional - Natural consequence
Conditionals overview - All conditional forms
それなら - If that's the case
だったら - Casual conditional