- 1.
不高兴的；忧愁的 -
• What's made you look so sad？ 什么事让你这么愁眉苦脸的？ -
• I was sad to see them go in the end. 他们最后都走了，对此我很伤心。 - 2.
(使某人感到)不幸福的， 悲伤的 -
• It is so sad that he can't go with us. 真不幸他不能和我们一块儿去。 - 3.
可悲的；可怜的 -
• He is a sad character--he nearly has no friends. 他是个可悲的角色--他几乎没有什么朋友。 -
• Sad to say,the weather here is nothing but fog all day long. 不幸的是，这里的天气整天都雾濛濛的。