He injured his leg in a traffic accident.

I visited my friend in the hospital to ask after his health.

I happened to meet him at the street corner.

He was unfortunate enough to be involved in a traffic accident.

Unfortunately, he was late for the train.

Unfortunately, he dropped his wallet.

He was in a traffic accident yesterday.

He didn't think an incident would occur to him.

I live in a place with good transportation.

I travel along this route every day.