愚かな行為をしたのかもしれないと思い始めた。

tbd

I started to think I'd behaved foolishly.

I started to think I had behaved foolishly.

満ち潮で水没する砂浜でキャンプを張るのは、実に愚かな行為です。

tbd

Pitching camp on sand banks that go under at high tide is a truly stupid thing to do.

父は私の愚かな質問に苦しまれた。

tbd

Father was tormented by my silly question.

彼女は彼の前でたばこを吸うような愚かなことはしなかった。

tbd

She knew better than to smoke a cigarette in his presence.

彼女は彼に口答えするほど愚かではない。

tbd

She knows better than to answer back to him.

彼女はわざわざそんなおろかなことはしない。

tbd

彼女はそんなばかげた質問をするほど愚かではなかった。

tbd

She knew better than to ask such a stupid question.

彼女はずいぶん愚かな振る舞いをしたものだ。

tbd

She behaved quite foolishly.

彼女の怒りは彼の愚かな行動によって引き起こされた。

tbd

Her anger was aroused by his silly actions.

彼女の申し出を断るとは、彼は愚かであった。

tbd

It was stupid for him to turn down her offer.

It was silly of him to refuse her offer.

It was foolish for him to turn down her offer.