JLPT N1
～たら～ところだ
if (counterfactual), then would have been
Structure / Usage
Verb (たら) + Adjective / Noun + ところだった
Example Sentences
もう少し遅かったら、大変なところだった。
If I had been a little later, it would have been terrible.
あの時気づかなかったら、危ないところだった。
If I hadn't noticed at that time, it would have been dangerous.