(1)悲哀(伤)的，(令人)难过的(not happy;feeling sorrowful;causing sorrow)：a～face/look/expression 悲伤的面容/样子/表情;～memories/stories/news/events 令人悲伤的回忆/故事/消息/事件;look/seem/become/feel～看上去/似乎/开始(变得)/感到悲伤;He's～and sorry in his heart. 他心里非常悲伤。He is～about his sister's death. 他为他姐姐的逝世感到难过。He is～when he learned of her misfortune. 他听说她的不幸时感到很难过。It made me～to think about him. 一想起他我就难过。It made me～when I thought of his death. 一想起他的逝世我就难过。His death was very～. 他的逝世使人很难过。〖同〗 miserable，unhappy;〖反〗cheerful，glad，happy，joyful，pleased;

(2)凄惨的，不幸的;懊恼的(unfortunate;regrettable)：sb's～circumstances/story某人不幸的情况/经历;What a～time/scene/day! 多么不幸的时候/情景/一天!The newly-lighted lamps looked～. 新点的灯看上去有些暗淡。It would be～to be so near the ocean and not see it. 离大海这么近，却没有去看一看，真是太糟糕了。〖同〗 grave，pitiful，unfortunate;〖反〗fortunate，lucky;

(3)糟糕的，坏的(shabby;very bad)[作attrib]：a～state of affair 很糟糕的情况;a～fact that he committed murder他杀了人这一可悲的事实;a～comment on what he had done 对他所做事情的不良评价;The place is in～shape. 这个地方情况很糟。The car is in～condition. 这辆汽车坏了。The paint-work in this house is in a～state. 这个房间粉刷得太差了。a～slut/coward 一个可耻的荡妇/懦夫;

sad to say 不幸的是，真倒霉：S～to say，my uncle is ill again. 真倒霉，我叔叔又病了。

sadder but wiser 吃苦接受教训：John finished the match a～der but wiser man having realized that he needed a lot more practice before he could win anything. 比赛结束后，约翰接受了惨痛的教训，意识到要想赢得比赛，就要进行大量的训练。

→′sadden v(使)悲哀(伤);′sadly adv 悲哀(伤)地，难过地;凄惨地，不幸地;′sadness n 悲(忧)伤的，令人悲(忧)伤的事;

【辨异】sad与depress、depressed和oppressed的区别见DEPRESS。