本集 “一分钟英语” 介绍用来说明动作发生时间的词语 —— “until” 和 “by”。虽然这两个词都可以译成 “到……时”，但它们的用法却不同。“Until” 表示某事在未来的某个时间点前持续发生；“by” 表示某事在未来某个时间或最后期限前发生。
用法总结
1. Until
Until is used to talk about doing something up to a certain point in time.
“Until” 用来表示 “在某个时间点之前，一直做某事”。
- I have to take care of my dog until 5pm.
- Until the rain stops, we can't go to the beach.
- I will be working until this evening. We can meet for dinner after that.
2. By
By is used to talk about doing something before a future time or deadline.
“By” 用来表示 “在未来某个时间或最后期限之前做某事”。
- I have to finish an essay by 5pm.
- The council expects the bridge to be finished by December.
- By the time I come back, I want this room clean.
