Auxiliary (used in writing and formal speech only) (Intermediate ㊥ 599)
An auxiliary verb that expresses the writer's conjecture about some potentiality or his certainty about a given state of affairs.
Equivalent: Probably; likely; must be; should; ought; naturally
| (i) Vvolitional | V: non-controllable verb | |
| 書けよう | Someome (probably) can write something | |
| 出来よう | Someone (probably) can do something | |
| (ii) Noun+particle | V: non-controllable verb | |
| 目も覚めよう | It is natural that one wakes up | |
| 日本語が分かろう | Someone probably understands Japanese | |
| (iii) Adjective な stem | であろう | |
| 便利であろう | Something is probably/must be convenient |
