She felt sad when she heard the bad news about her friend's illness. （当她听到朋友生病的坏消息时，她感到很难过。）

The old man looked sad as he remembered the days of his youth. （这位老人回忆起他的青春岁月时，神情忧伤。）

Tom was sad because he failed the math exam again. （汤姆很伤心，因为他数学考试又没及格。）

The sad movie made everyone in the theater cry. （这部悲伤的电影让影院里的每个人都哭了。）

Mary has a sad expression on her face today. （玛丽今天脸上带着悲伤的神情。）

He became sad after a long argument with his parents. （在和父母激烈争吵后，他变得很伤心。）

The dog looked sad when its owner left home. （当主人离开家时，这只狗看起来很悲伤。）

They were sad to say goodbye to their old house. （他们很不舍得告别他们的老房子。）

The sad song brought back many painful memories. （这首悲伤的歌唤起了许多痛苦的回忆。）

Sarah is sad about losing her favorite toy. （莎拉因为丢了她最喜欢的玩具而难过。）

The city streets seemed sad and empty in the rain. （雨中的城市街道显得冷清又凄凉。）

His sad eyes showed how much he was hurting inside. （他悲伤的眼神透露出他内心的痛苦。）

We were all sad to hear that our teacher was leaving. （听到我们的老师要离开，我们都很难过。）

The little girl felt sad when she couldn't find her mother. （这个小女孩找不到妈妈时，感到很伤心。）

The sad story touched everyone's heart deeply. （这个悲伤的故事深深地触动了每个人的心。）

Jack was sad because his best friend moved to another city. （杰克很伤心，因为他最好的朋友搬到了另一个城市。）

The sad atmosphere in the room made it hard to breathe. （房间里悲伤的气氛让人感到压抑。）

She tried not to look sad in front of her friends. （她努力不在朋友们面前露出悲伤的神情。）

The sad ending of the book left me feeling down. （这本书悲伤的结局让我心情低落。）

He became sadder as the day went on. （随着时间的推移，他变得更加难过。

）