Questions & Answers about kare wa jiko de ikinokotta.
は marks 彼 as the topic of the sentence: as for him...
So the sentence is presenting information about him. In English, this often still becomes a normal subject like He survived the accident, but in Japanese the topic marker は is very common.
If you used が instead, it would sound more like you are specifically identifying him as the one who survived, or introducing new information about who did it.
- 彼は事故で生き残った。 = As for him, he survived the accident.
- 彼が事故で生き残った。 = He is the one who survived the accident.
Both can be correct, but the nuance changes.
Here, で marks the situation/event in which something happened.
So 事故で生き残った means he survived in the accident / survived the accident.
This で is often used with things like:
- 火事で死んだ = died in a fire
- 戦争で生き残った = survived the war
- 病気で苦しんだ = suffered from illness
It does not mean the accident was a tool or method here. Instead, it marks the event or cause-related context.
