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なくてはいけない/ならない

Must do A; have to A

好

12点

主人の枕は臭いので毎日洗濯しなくてはいけない。

Since my husband's pillow is really smelly, I have to wash it every day.

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9点

何で僕がやらなくちゃいけないの。

Why do I have to do that?

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8点

だけど、明日はお客さんとも会わなくちゃいけないし・・・。

But I have an appointment with my client tomorrow.

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17点

あなたはもっと文法を勉強しなくてはいけない。

You must study grammar more.

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7点

あなたは、すぐそこに行かなくてはいけない。

You need to go there immediately.

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5点

何でこんなに早く起きなきゃいけないの？

Why do I have to wake up this early?

Getting the sentences

Construction

(Elements in parentheses are optional.)

AVerb: ない form

-い

くては

いけない/いけません

Basic Examples:

いかなくてはいけない (must go)

AVerb: ない form

-い

くちゃ

いけない

Basic Examples:

寝なくちゃいけない (must sleep)

AVerb: ない form

-い

くては

ならない

Notes

Stronger than ~なければならない.

Related Expressions

てはいけない

Where this grammar is found

Genki I: Chapter 12
Nihongo So-Matome N4 (日本語総まとめ): 第２週　１日目
JLPT N4 / Intermediate: Grammar for Jumble Quizzes

User notes

No user notes have been added. Logged-in users can add user notes.

Discussion about this grammar

aileen

Studying: JLPT 2級

Level: 1, 好 : 67

The kanji for せんたく are incorrect in the example sentence. It should be 洗濯, not 選択. (:

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2点

13 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

Fixed, thanks.

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0点

13 years ago

grstar85

Years Studied: 3
Studying: JLPT2

Level: 1, 好 : 25

I have recently heard this with the more polite ikemasen instead of ikenai.
shinakutewa ikemasen - must do it

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1点

12 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

Thanks - I went ahead and added that to the non-contracted form given above.

好

0点

12 years ago

mysticfive

Years Studied: since 2000
Studying: 自分のため、日本語教師だから

Level: 913, 好 : 4,999

in the Baic Construction, what is the bit with the VE/10?

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1点

11 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

What VE/10?? (fixed!)

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0点

11 years ago

katsukia8

Years Studied: 4
Studying: JLPT 5

Level: 1, 好 : 51

好

0点

11 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

好

0点

11 years ago

くるるぎくん

Years Studied: 11 months
Studying: This site

Level: 1, 好 : 362

Ive never really thought about it. is there a way to make this form in the past
such as "i had to go"

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0点

11 years ago

mysticfive

Years Studied: since 2000
Studying: 自分のため、日本語教師だから

Level: 913, 好 : 4,999

just like making a negative into the past tense - just drop the い and add かった - so "I had to go" would be 行かなくてはいけなかった

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4点

11 years ago

くるるぎくん

Years Studied: 11 months
Studying: This site

Level: 1, 好 : 362

thank you soo much.... sad to know ive been speaking this language forever and never...thought about this

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0点

11 years ago

テリフン

Years Studied: 3
Studying: ＪＬＰＴ　Ｎ3

Level: 1, 好 : 287

So, using くちゃ instead of くては　is more casual, right? Also, I am sorry, I know this is a terrible question, but the は is pronounced as it would be as a particle, correct? Wa, instead of Ha? Also, I have seen people write いけません as well as いけないです。Are both correct?

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0点

10 years ago (Edited 10 years ago.)

mysticfive

Years Studied: since 2000
Studying: 自分のため、日本語教師だから

Level: 913, 好 : 4,999

くちゃ is more casual than くては, and yes, the は is pronounced わ there because it *is* a particle - literally this pattern is a double negative (you can't not do such-and-such) so it might be easier to think of it as なくて　は　いけません. いけません and いけないです are both correct, but the former is slightly more formal.

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6点

10 years ago

tkalee

Level: 1, 好 : 0

Is くちゃ seen as more feminine? I seem to recall there's a version of this that is childish/girlish, perhaps くちゃう？

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0点

8 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

I don't think I've heard females using it more than males, but someone else might have a differing view.

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2点

8 years ago

まさむね123

Years Studied: Since Nov 2018
Studying: JLPT N3

Level: 1, 好 : 17

based on this https://japanesetest4you.com/f... we can also use

くてはならない ? any thoughts?

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1点

4 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

Added it, thanks! Already had the てはならない on another page on the site, so it only makes sense to add this one as well.

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1点

4 years ago

まさむね123

Years Studied: Since Nov 2018
Studying: JLPT N3

Level: 1, 好 : 17

石油は現代の工業にとってなくてはならない原料である。
Oil is an essential raw material for modern industry.

Does anybody have a better guess on how to translate this sentence? It currently doesn't have an entry in here.
let me know if I should transfer this inquiry.

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0点

3 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

essential sounds good to me! It does *kind of fit* if you think of it this way:

食べなくてはならない = we cannot have the situation where there is no eating = we must eat
なくてはならない = we cannot have the situation where there isn't (ない) = we must have it

好

1点

3 years ago

まさむね123

Years Studied: Since Nov 2018
Studying: JLPT N3

Level: 1, 好 : 17

Thanks, that clarifies things up!

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0点

3 years ago

ミチャミチ

Level: 2, 好 : 3

漢字を練習しなくてはいけない

Is ないといけない relevant or not?

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0点

2 years ago

マイコー

Site admin
Level: 110, 好 : 6,634

That works as well! There are several phrases that are almost the same.

しないといけない

しなければならない

しないと

しなくてはいけない

I'm sure I'm missing a couple more..

好

0点

2 years ago

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