FOR
基本区别点:
- 用在一段时间之前。
例子:
- for 10 minutes
- for 5 years
- You've been waiting here for years.
SINCE
基本区别点:
- 用在特定时间点之前。
例子:
- since winter
- since last night
- They've been studying since 2018.
AGO
基本区别点:
- 指向动作或改变发生时的那个点。
- 可以和“since‘连用。
例子:
- 3 years ago
- 5 minutes ago
- since 3 years ago
- They've been dating since about 2 weeks ago.
网友评论