1. 后接介词时，情况比较复杂，大致原则如下：
(1) 表示对某人感到失望，通常用介词 with, in。如：
He is very disappointed in his new secretary. 他对他的新秘书感到很失望。
My parents will be disappointed in [with] me if I fail in the exam. 要是我考试不及格，我父母会对我感到失望的。
(2) 表示对某一行为感到失望，通常用介词 at, about等。如：
We are all disappointed at [about] his failure. 我们都为他的失败而感到失望。
He was really disappointed about [at] not being able to go. 他未能去成实在感到失望。
(3) 表示对某事感到失望，一般用介词 about, at, with等。
单词：disappointed的近义词、反义词、形近词辨析
glad/happy/pleased/delighted/joyful/gay/merry/sad/sorry/disappointed/upset/unrest
记忆：
1. glad [ ^lAd ] adj. 高兴的, 乐意的, 感到高兴的 How glad we are to return to our homeland!将要回到祖国了，我们好高兴啊！
2. happy [ 5hApi ] adj. 快乐的, 幸福的 Money can’t always make a happy man.钱并不能总让人快乐。
3. pleased [ pli:zd ] adj. 高兴的, 满足的 The president was pleased with the preparations for the conference to come next week.总统对下周要召开的会议的准备工作很满意。
4. delighted [ di5laitid ] de-light-ed adj. 欣喜的, 快乐的 When word came that our team won we were all delighted.当消息传来我们队赢了的时候，大家都感到欣喜。
5. joyful [ 5dVCiful ] adj. 快乐的, 兴高采烈的, 可喜的, 令人欢欣的 The joyful boy will bring a pleasant time to us.这个快乐的男孩将给我们带来一段愉快的时光。
6. gay [ ^ei] adj. 快乐的, 欢迎的 We were gay on May day.五一那天我们很开心。
7. merry [ 5meri] adj. 欢乐的, 愉快的 I wish you a merry Christmas.祝你圣诞快乐。
8. sad [ sAd] adj. 忧愁的, 悲哀的 The sad father sank to the chair, saying not a single word.悲伤的父亲坐到椅子上，一言不发。
9. sorry [ 5sCri ] adj. 遗憾的, 对不起的, 抱歉的 I’m sorry to hear that.听到这事我很难过。
10. disappointed [9dIsE`pRIntId] adj. 失望的 Mary was so disappointed that she swore she would never see him again.玛丽非常失望，她发誓不再见他了。
11. upset [ Qp5set ] vt. 颠覆, 推翻, 扰乱, 使不适, 使心烦 adj. 不适的，心烦的 The unexpected visit disturbed his plan, upsetting him a great deal.这意外的来访打乱了他的计划，他很不高兴。
12. unrest [ 5Qnrist ] n.不安的状态, 动荡的局面 When can the unrest in Iraq calm down?伊拉克的动荡局面何时能安定下来？
另类阅读：
I am glad to see they had a merry Christmas and happy New Year. My wife is also pleased to see that her parents were delighted to spend joyful days with the children. No one is disappointed or upset.
轻松一刻
Son: Mum, I got the fifth place this time.
Mum: Good boy. You have made rapid progress. I will cook you two eggs.
Son: Thanks, mum.
Mum: How many in all took part in the test this time?
Son: Five.
与单词：disappointed 相关的例句或者名人名言
The exam result disappointed him.
考试成绩让他很失望。
The disappointed losers crawled home to lick their wounds.
输者废然而返以重整旗鼓。
We are disappointed that you will not be able to come.
你不能来，我们很失望。
※Blessed is he who expects nothing, for he shall never be disappointed. 人无所求最享福，因他不为失望苦。
※Man alone is born crying, lives complaining, and dies disappointed. 只有人，生下时啼哭，活著时抱怨，去世时失望。
