be upset at sb 对某人感到心烦,不安
be upset about sth 对某事感到心烦,不安
eg.He was upset at his uncle about laughing all the time
be upset at 与 be upset about 有什么区别?
be upset at 与 be upset about 有什么区别?
RT
如果有例句就最好了，谢谢····
RT
如果有例句就最好了，谢谢····
英语人气：769 ℃时间：2019-08-19 04:19:46
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