A question came up recently that made me wonder how this form is for the verb です.

I know that です has a ~たら form that is conjugated as だったら。But, does it have a ~れば form? Is it でれば? (I don't think so because that's more likely 出れば。) Is it だれば? Or is it であれば? (from である rather than です)

If it is であれば, why is that so?

I know that once I knew this but I seem to have forgotten. Help!

1 Answer 1


It is 〜であれば. This is because です is really just a contraction of であります。 So you simply take the 〜れば form of あります, which is あれば.

Similarly, the だったら you mentioned is also just a contraction of であったら, and you can see あったら is just the 〜たら form of あります.

  • Thanks for that. I knew I knew it was であれば but once I forgot why, I started questioning it and got confused.
    – psosuna
    Oct 13, 2017 at 17:42
  • Don't forget なら.
    – Sjiveru
    Oct 13, 2017 at 23:10

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