(1)愉快(高兴，满意，幸福)的(having a feeling of pleasure of contentment，satisfaction，etc)[A (about/in/with)]：a～marriage/memory/childhood/smile 幸福的婚姻/回忆/童年/笑容;a～scene令人愉快的场面;be (feel) quite/very～是(感到)相当幸福;be～about the turn of events/business/latest unemployment statistics 对事件的转折/这项业务/最近的失业统计数字感到满意;be～in (having congenial) work 对(做合意的)工作感到满意;be～with one's life/over the settlement 对自己的生活/这种解决方法感到满意;a～event 弄璋(瓦)之喜;〖同〗glad，pleased，delighted;〖反〗sad，unhappy;

(2)(表示祝愿)愉快(快乐)的((of wishes)joyful; full of pleasure and success)[作attrib][无comp]：H～Anniversary/Birthday/New Year!周年/生日/新年快乐!Many happy returns of the day. (祝)生日快乐。

(3)(因做某事而)高兴的(willing to do sth)[作pred][A+to-inf，A+that][无comp](fml)：be～to see sb/hear of sb's engagement/be of service/work with sb 很高兴见到某人/听说某人订婚了很高兴/愿意效劳/愿意与某人一起工作;be so～that sb could come很高兴某人能来;

(4)幸运的(lucky; fortunate)[作attrib]：By a～chance，I have the key with me. 巧得很，我身上带着钥匙。〖反〗 unfortunate，unlucky;

(5)(思想，行为，言词等)恰当(巧妙)的(of ideas，behaviour，words，etc appropriately expressed)：a very～remark/thought/idea/solution/decision 十分恰当的话/想法/思想/解决方法/决定;a～choice of words/turn of phrase/way of expressing an idea 十分恰当的用词/措辞巧妙的话语/表达一种想法的巧妙方法;

as happy as the day is long/as a sandboy/as Larry 非常快乐：He's as～as the day is long. 他非常快乐。

a/the happy medium 恰到好处;折中(方法)：be/find/seek/strike a～medium 是/找到/寻求/突然想到一种折中的办法;

→′happily adv 幸福(满意)地;幸运地;恰当地;′happiness n 幸福(运);͵happy-go-′lucky adj 随遇而安(听天由命)的;无忧无虑的;

【辨异】happy与fortunate和lucky的区别见FORTUNATE。