Spent
核心用法是消耗资源：钱、时间、精力。也可形容人“精疲力竭”（“she looked spent”）。被动 “spent on” 引出用途或去向。
- “We spent the weekend hiking in the hills.” (我们在山里徒步度过了周末。)
- “Half the budget was spent on marketing.” (一半预算花在了市场营销上。)
- “After the marathon, he was completely spent.” (马拉松之后，他彻底累垮了。)
“Spend” 源自古英语 “for-spendan”（浪费、耗尽），与拉丁语 “expendere”（支付）在语义上汇流，形成现代“花费”概念。
不规则动词 “spend - spent - spent”，无派生前缀；形容词用法可视为过去分词作定语。
消费主义讨论里，“spent” 常与信用卡账单、时间管理等话题相连；文学里形容人 “spent” 带有疲惫、燃尽的诗意。
- 固定搭配: “spent fuel” (乏燃料), “time well spent” (时间花得值)
钱包被 “spend” 之后变扁，就像能量被抽空——“spent” 就是“已经被掏过一轮”。
“They spent hours in line, only to learn the tickets were sold out.” (他们排了几个小时队，却得知票已售罄。)