“Ago”是一个表示时间的副词,用于表示从过去的某个时间点到现在的时间间隔。在使用“ago”时,句子的时态取决于想要表达的时间关系。
以下是一些例子:
1. 过去时态:
I bought a new car two years ago.(我在两年前买了一辆新车。)
They finished the project three months ago.(他们在三个月前完成了项目。)
2. 过去完成时态:
He said he had finished his homework an hour ago.(他说他在一个小时前就完成了作业。)
We had already eaten dinner by the time you arrived.(当你到达时,我们已经吃过晚饭了。)
3. 现在时态:
He left the company three months ago and hasn‘t come back since.(他三个月前离开了公司,从那以后就没有回来过。)
They have been living in this apartment for two years ago.(他们在这间公寓里住了两年了。)
4. 未来时态:
The conference will be held two weeks ago.(会议将在两周后举行。)
We’ll have finished the assignment by tomorrow.(我们将在明天之前完成作业。)
在使用“ago”时,请确保时态与上下文保持一致,以便清晰表达时间关系。