《剑桥英语语法》p. 144 有这样一个例句:
He has got up at five o'clock.
如果改变一下语序,即:
At five o'clock he has got up.
请问是否仍然正确?
He got up at 5 o'clock today. 中文意思是:他在今天5点钟起床了。
起床的动作是很短暂的,不具备持续性等。所以不用完成时态。
I have been working since I got up at 5 o'clock today.
从我5点钟起床之后,就一直在工作。
工作是一个可以持续的工作,而且当说这句话的时候,时间还持续在今天。