At a glance
～とみると means "on judging that something is the case, someone immediately acts". The main clause is the reaction of the person who made the judgment. It is mostly found in writing and narration.
Verb / い-adj (plain form) + とみると
Noun / な-adj + だ + とみると
猫はえさがもらえるとみると、すぐに近寄ってきた。 As soon as the cat saw it could get food, it came right over.
How to form it
とみると follows plain forms, non-past or past, affirmative or negative:
| Attaches to | Form | Example |
|---|---|---|
| Verb (non-past) | plain form | えさがもらえるとみると |
| Verb (past) | た-form | 雨が降り出したとみると |
| Verb (negative) | ない-form | 間に合わないとみると |
| い-adjective | plain form | 相手が弱いとみると |
| な-adjective | + だ | 形勢が不利だとみると |
| Noun | + だ | チャンスだとみると |
Politeness goes at the end of the main clause, not before とみると.