This page is a hub for the hypothetical form 仮定形. It describes how to conjugate verbs and adjectives to their hypothetical form. The hypothetical form is a kind of stem form of both kinds of word, which can be used to compose a conditional form by appending ば.
形容動詞 and nouns
Append であれば to the adjective.
- If this town is busy today, shall we go to the countryside?
The ある here is actually the inanimate existence verb. So a literal meaning could be if there is busyness.
Drop the い (from the attributive form) and append けれ.
- If the film is interesting I'll watch it again.
Replace the trailing る with れば.
- If you eat this mushroom, you'll become taller.