表示心情沮丧、灰心丧气时，老外偏爱frustrated这一词。我们喜欢是sad, lose one's heart等表达法。
没说过frustrated一词三次以上的，那么英语还不算入门(别骂我啊，我只可是考虑再三才说滴，没说过的话，现在说也来得及)。
用法特别简单。当你觉得灰心丧气时，forget about "sad", use this word instead.
例句：
1、没有一个女孩子给我写过信，我真是沮丧极了。
I'm so frustrated that no girls wrote me.
2、公司业绩总是不好，总经理真是心灰意懒。
Chinglish: The total manager is very sad because the achievement is not good.
Revision: The general manager is so frustrated for the poor performance of his company.
If, if lots of people come and shout to me:"Coolmax, your English is so poor and limited!" I'll be extremely frustrated :_))
再说一遍，以后要常说 frustrated哦!说多了，你就有老外的感觉了。
总评：
使用频率：★★★★
造句功能：★★
西方思维：★★★★★