1、一般过去时其标志性词语主要有yesterday、the day before yesterday、yesterday morning/afternoon/evening、last Friday、last week、last month、last summer、last year等。
2、现在完成时其标志性词语主要有:already、just、never、ever、yet、since+具体时间以及for+一段时间系列,例如:since five years ago、for five years等。
He has done a lot of work in the past two years.
在过去两年中他做了许多工作
I have been in the army for more than 5 years.
我在部队已经呆了五年多了。
You’ve learnt surfing from him, haven’t you?
你从他那里学的滑水,不是吗?
My mother was at work yesterday afternoon.
昨天下午我的妈妈在工作。
Did you have a good time last summer?
去年夏天你过的好吗?
I did my homeword yesterday.
我昨天做了家庭作业。