Sad 悲伤类情绪
初级词汇
guilty（内疚的）, ashamed（羞愧的）, depressed（沮丧的）, lonely（孤单的）, bored（无聊的）, tired（疲惫的）
高级词汇
remorseful（懊悔的）, stupid（愚蠢的）, inferior（卑微的）, isolated（孤立的）, apathetic（冷漠的）, sleepy（困乏的）
例句
I felt incredibly ashamed of myself for getting so angry.
我对自己发那么大的火而深感惭愧。
I believed Julie was totally remorseful over what she did.
我相信朱莉对她的所作所为特别懊悔。
I realised I was becoming increasingly depressed and apathetic.
我意识到自己越来越消沉、越来越冷漠了。