Structure
[い]Adjective[い]+ ければ
[な]Adjective + なら(ば)
Noun + なら(ば)
Verbs:
[る1]Verb → 見る + れば
[る5]Verb → 座る + れば
[う]Verb → 歌う + えば
[く]Verb → 歩く + けば
[す]Verb → 話す + せば
[つ]Verb → 打つ + てば
[ぬ]Verb → 死ぬ + ねば
[ぶ]Verb → 飛ぶ + べば
[む]Verb → 休む + めば
[ぐ]Verb → 泳ぐ + げば
Exceptions:
する → すれば
くる → くれば
Negative Forms:
Verb[ない]+ なければ
[い]Adjective[ない]+ なければ
[な]Adjective + で + なければ
Noun + で + なければ
Détails
Niveau de langue
Standard
À propos de ば
There are several different ways to express 'if' in Japanese. One of these is through using the conjunction particle ば. ば presents hypothetical situations (possibilities), and pairs with verbs using an う to え sound-change conjugation method on the terminal (last) kana. Let's examine this with a few verbs first.
As we can see with these verbs, the final kana will change to an え sound, from its original う (る to れ, う to え, く to け, す to せ, etc.) before adding ば. It is important to practice these, to not get them mixed up with verbs that use れる, and られる. Unlike with these verbs, the base form of する and くる will not change when using ば.
To conjugate い-Adjectives with ば, the い will be replaced with けれ, one of the standard い-Adjective conjugation forms. After this, just add ば.
For な-Adjectives, and nouns, なら (another standard conjugation form of these words) will be added, before attaching ば.
In the negative form (using ない), both the auxiliary verb ない, and the い-Adjective ない will conjugate in the same way. Simply replace い with けれ, and then add ば.
Fun Fact
The なら in ならば is often used by itself to mean 'if', and is an abbreviation of the classical auxiliary verb なり 'to be'. In its hypothesis form, なり will become ならば. However, なり is very irregularly used by itself in modern Japanese, with なら, and ならば being far more common.
Caution
So that you do not mix up the conjugation rules for ば, and passive verbs, remember that the last kana of the verb will change to an あ sound, before adding れる with passive verbs. However, this change is to an え sound with ば.
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Exemples
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ヘルメットを被らなければ、バイクに乗れない。
If (you) do not wear a helmet, then (you) cannot ride a motorbike.
明日雨が降れば、映画を見に行くつもり。
If it rains tomorrow, then I will go watch a movie.
毎日サッカーの練習に行けば、プロのサッカー選手になれる。
If you go to soccer practice every day, then you can become a professional soccer player.
今週の金曜日までに出来なければ、来週末に終わらせなくてはいけない。
If (you) cannot do it by this Friday, then (you) have to finish it next weekend.
展覧会に行けば、色々なことを学べる。
If (you) go to an exhibit, then (you) can learn a variety of things.
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ば – Discussion Grammaire
Réponses les plus récentes (31 au total)
Jonny1
It’s not the で particle, it’s the te-form of the copula. 好き is a na-adjective, and you need で to connect a noun and a na-adjective to the negative conditional.
nekoyama
Jonny1:It’s not the で particle, it’s the te-form of the copula.
Treating で as the te-form of the copula is only a modern reanalysis. It’s about as far removed from explaining the structure of である as possible.
Jonny1
Thank you for your explanation.
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