你每天从几点开始工作？在表达时间或时间段时，通常会用到 “for” 和 “since”。比如：要表达 “从十点开始”，应该说 “since 10 o’clock” 还是 “for 10 o’clock” 呢?
用法总结
For vs since
1. We use 'for' to describe how long an activity or a situation lasts.
介词 “for” 用来描述一项活动或一个情况持续的时间。
- I go running every day for 10 minutes.
- I have been waiting for an hour.
2. We use 'since' to describe when an activity or a situation began.
介词 “since” 用来描述一项活动或一个情况开始的时间。
- I have been recording this video since 10 o'clock.
- We haven't seen each other since 2010.
