At a glance
もしも～なら means "if (by any chance)" or "suppose". It sets up a possible situation, and the second half usually gives advice, a request or the speaker's plan for that case.
もしも + [verb / い-adj plain form] + なら、～
もしも + [な-adj / noun] + なら、～
もしも行くなら、傘を持って行ってください。 If you're going, please take an umbrella.
How to form it
Put もしも at the start of the condition and なら at the end of it.
| Attaches to | Form before なら | Example |
|---|---|---|
| Verb | Plain form (dictionary or ない form) | 行くなら, 行かないなら |
| い-adjective | Plain form | 寒いなら, 寒くないなら |
| な-adjective | Stem, no だ | 静かなら |
| Noun | Noun, no だ | 学生なら |
Register: もしも～なら is neutral. The end of the sentence shows politeness: 来て (casual) or 来てください (polite).