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Must do なければなりません

Oni's picture
This is a mouthful!  But it is so useful. Learn it well

TO MAKE IT:  plain negative form - i +  ければ なりません kereba narimasen

ピーマン を 食べなければ なりません。 
[Would be 食べなfor the plain negative form ]
pi-man o tabenakereba narimasen.
(I) must eat green peppers.  (Many Japanese children don't like green peppers)

Say that 5 times fast with your mouth full!

Perhaps the most useful usage is:

~しなければ なりません
The shi is from suru (to do)

勉強 しなければ なりません
benkyou shinakereba narimasen.
(I) must (have to) study.

しなければ なりません
shinakereba narimasen.
(I) must (have to) do (it).

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Why the Double Negative

Thought I should mention as well, the reason why this form exists is because the way you say you CAN'T or SHOULDN'T do something in Japanese is by (out of a few methods) using the -te form of a verb combined with the は Particle and add either なりません、いけません、Or だめ。 だめ Is a very casual form, though. You can also make the first two more casual by treating them like regular verbs, i.e., using ならない And いけない。 So to say "you're not allowed to eat that" you could say something like "それを食べてはいけません。” So because that is describing doing an action as bad, for some reason, instead of saying doing the action is good, Japanese have decided to say that NOT doing an action is bad, therefore making it good if you DO do it, thus the double negative.

so if i want to say "i must

so if i want to say "i must not eat apples" can it b like:
watashi wa ringo o tabenakereba NARIMASU.
i hav used narimasu (which is a POSITIVE) because it will make the sentence a negative one AS A WHOLE..
am i right ?

Live to eat , don't eat to live :€

RE so if I want to say "I must not"

"I must not" would be Verb て form は いけません。
e.g. りんごを 食べては いけません。

You can also use いけません instead of なりません to make the double negative in "must"
e.g. I must study: べんきょうしなければ なりません or べんきょうしなければ いけません。

I hope that helps!

The right idea...

But in fact, you would say わたし は りんご を 食べれば なりません - (It will not do if I I eat apples -> I must not eat apples.)
The other way around - I'm not sure you can use なります but it can be done with some other positive endings,
わたし は りんご を 食べなくて いい です -> It's fine if I don't eat apples -> I -don't have to- eat apples.

(Yeah, I know, the question was asked almost a year ago, I'm really answering for anyone else coming by and reading.)

I was wondering, is there a

I was wondering, is there a difference in meaning between using ~なければならないんです and ~なければなりません?
Is the first version just a less polite version, and if it is, why is there ~んです?
I am still a beginner in Japanese, so sorry if this is a stupid question. xD

re: んです

The んです is used to add a tone of explanation to the sentence.

It would roughly translate as follows.

The thing it, ( I ) must do ( action ) rather than ( I ) must do ( action )

You'll find as you're exposed to more Japanese that this is used a LOT in the language.

の のです/んです のだ/んだ are all versions of this. This ending can also be conjugated to give a sentence such as "It isn't that I must eat" "It was that I must eat" etc.

Thank you for the information

Thank you for the information :D

what does なりません mean? is it

what does なりません mean? is it another verb or should I just remember this as a whole? and what about the いけません in てはいけません

chikara's picture

what does なりません mean?

It is the polite negative non-past form of the verb なる.

なる - to become; to get; to grow; to be; to reach; to attain;

Don't complain to me that people kick you when you're down. It's your own fault for lying there

なりません is literally will not

なりません is literally will not do
いけません is literally it cannot go

Basically making the structure "Unless someone does ......... it cannot/ will not go.

This is used as Must

Must

Hey guys,

I'm just wondering what the difference is between ~nakereba narimasen and ~nakutewaikemasen/~nakuchaikenai

Do they denote the same thing or is there a difference?

Ongakuka's picture

Must

Not really much difference between them. As you may be aware 'nakucha' is an abbreviated form of 'nakute wa' for informal use. This can be left on its own, as in 「行かなくちゃ。」

なぜなら、おまえは・・・・・・人形だ

Maix's picture

-sen = positive?

Uuum, im a bit confused, isnt -sen supposed to be negative?
If narimasu means must, then why does narimasen mean must do in this sentence?
I mean in a more specific description.
Or should I learn that its just supposed to be that way?

皆様, 始めまして! :)

re: -sen = positive?

たべます -> たべない -> たべなければ
します -> しない -> しなければ

These verbs are already in the negative form

食べなければ なりません。 
~しなければ なりません

It basically is a double negative, I cannot, not eat. This gives it the feeling of having to eat.

i got that..

okaaay....i got it now.....i was going mad thinking why narimasen has been used when its is a NEGATIVE...but WOW ..i get it now that the verb is also negative ...so the two negatives cancel each other to form a positive (sounds like maths) i.e.MUST DO...
thnx a LOT

Live to eat , don't eat to live :€

Negative form

So by adding kereba narimasen it makes the sentence negative?

Lewis :)

clay's picture

Actually the な is what makes

Actually the な is what makes it negative.

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Um...

Um... So if you say kereba narimasu will it still be correct?

Lewis :)

clay's picture

No. Sorry, I meant the な

No. Sorry, I meant the な makes the main verb negative.

たべます -> たべない -> たべなければ
します -> しない -> しなければ

So you need both.

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Link error

Hi Clay,
The link here for 'suru' gets a 'page not found'.
I think it's because the link has an additional "grammar/chapterthree/" in the url.
Cheers,
Dan

clay's picture

Thanks! Fixed now.

Thanks! Fixed now.

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