真剣

彼は真剣な顔つきで話し始めた。

He started talking with a serious look on his face.

彼は卒業後の進路について真剣に悩んでいる。

He is seriously worried about his future path after graduation.

二人は数年前から真剣な交際を続けている。

The two have been in a serious relationship for several years.

彼は今日、いつにない真剣な表情をしていた。

He had an unusually serious expression today.

君達の将来について、真剣に話し合う必要がある。

We need to seriously discuss your future.

彼の話のトーンが急に真剣になった。

The tone of his talk suddenly became serious.

彼は真剣な表情で将棋の盤を見つめている。

He is staring at the shogi board with a serious expression.

仕事に対する甘えを捨て、真剣に取り組むべきだ。

One should cast aside dependence toward work and tackle it seriously.

じぶんの将来について真剣に考える。

I think seriously about my own future.