I have just finished it. 與 I finished it just now. 的區別在于時態,兩者并非表示時間與現在的遠近。
用現在完成時強調影響,如可以外出了,可以把工作上交了,等等。體會:
I have just finished it, so I can go out now.
用一般過去時,只是陳述過去發生的事情。體會:
I finished it just now. It was really a difficult job.