彼は行方不明になったと思われた。の英語

He was counted as lost.

He appeared to be in straitened circumstances.

He felt lonely.

He thought he himself was suffering from dementia.

He scented that trouble was brewing.

He nearly went mad with vexation―（他動詞構文にすれば）―Vexation nearly drove him mad.

He felt like a fool.

he found himself in straitened circumstances

He felt very lonely.

He seemed to have been struck by a feeling of deep admiration.

He soon sank out of sight.

I fear for his reason.

I thought that he was very suspicious.

He wasn't exactly a stranger.

he felt leanings toward frivolity

He was there physically, but not mentally.

He had an intuition that there was something wrong.

He felt his flesh crawl

I felt that he was dreadful.

He was lost in the crowd.

He was aware of being watched.

I thought that he was very young.

I thought he must be mad

I concluded him to be mad.

He had a general feeling of weakness.

He couldn't penetrate the mystery.

He failed to appear on the occasion.

He passed by me without taking notice of me.

He felt alienated from society.

He had a sensation of dizziness [fear].