记忆方法
双解例句
小知识
Occasion means something special––that happens seldom or is notable when it does. On occasion, we sit down together as a family, but not every day, and never for dinner. When Great Aunt Mabel visits, however, we rise to the occasion and stage a large family meal.
Occasion can also mean a designated time or reason something happens, or it can be an event in itself. I'm giving you your grandmother's ring on the occasion of your graduation from high school. I haven't had occasion to look at it since she died. It's valuable, so only wear it on special occasions.
实用短语
常用短语
单词用法
chance:侧重指偶然或意外的机会,有时也指正常或好的机会。
opportunity:侧重指有利或适合于采取行动,以达到某一目的或实现某种愿望的最佳时机或机会。
occasion:指特殊时机或良机,也指时节。
situation:指情形;情势;处境
special occasion特别的时刻;特别的场合
on the occasion of值此…之际
on occasion有时;偶尔
词根词缀
词根: cas
1. =fall,表示”落下,降临”; 2. 引申为偶然发生
adj.
casual 偶然的cas落下,降临+ual……的→落下的→不是安排好的→偶然的
n.
cascade 小瀑布cas落下+cad落下+e→落下再落下→瀑布
case 事, 病例, 案例, 情形, 场合cas落下,降临+e→[某事]降临,发生→事, 病例, 案例, 情形, 场合
casualty 事故;灾难casual偶然的+ty表名词→[突然]落下的事→事故
occasion 发生;时机oc使+cas落下+ion表名词→使……落下→事情发生
同义词辨析
这些名词均含”机会”之意。
- chance: 侧重指偶然或意外的机会,有时也指正常或好的机会。
- opportunity: 侧重指有利或适合于采取行动,以达到某一目的或实现某种愿望的最佳时机或机会。
- occasion: 指特殊时机或良机,也指时节。
同义词
adventure / incident / occurrence / happening / episode / observance / event / affair / service
instance / conjuncture / situation / case / condition / spot / circumstance / time
season / opportunity / stage / chance / opening
justification / explanation / motivation / inducement / excuse / rationale / mainspring / motive / determinant / source / fountainhead / ground / cause / incitement / reason / warrant / origin / impulse / incentive