713 复习
sad 伤心的，难过的，令人遗憾的
I'm so sad (that) you can't come. 你不能来，我很遗憾。
He's feeling sad because his pet died. 他很伤心，因为他的宠物死了。
I was sad to hear that they'd split up. 听说他们分手了，我很难过。

upset
难过的，沮丧的，失望的，生气的 

I'm upset that you didn't call.
你没（给我）打电话，我很失望。

reply 回复，回应，回答
I'm upset that you didn't reply (to my messages).
你没给我回复（信息），我很失望。
message(s) 信息，短信，消息

She's very upset because her father passed away last week.
她非常难过，因为她父亲上周去世了。
pass away 去世