英语中last表示上一个，所以
往往是一般过去时的标志。
例如
The teacher as well as the students went to the Great Wall last year.
What did you do last Sunday?
I can remember the last time when I was punished by the teacher.
此外last还可以作动词，意思是持续，后面加段时间。
The big fire lasted four hours.
The meeting has lasted two hours.
