finish是延续性动词还是短暂性
finish是瞬间动词，也叫非延续性动词。have finished并非是延续。而是指过去动作对现在造成的影响或结果。
finish
v.完成;做好;(使)结束;吃完，喝光，用尽(所剩之物)
n.最后部分;结尾;结局;末道漆;抛光
例句：
Pressure was brought to bear on us to finish the work on time.
我们得按时完成工作，没有回旋余地。
I need about an hour to finish off this report.
我需要一小时左右结束这篇报告。
As a matter of interest, what time did the party finish?
我想知道，晚会是什么时间结束的？
I didn\'t finish the test ─ I ran out of time.
我没答完试卷，我的时间不够了。
I went home directly I had finished work.
我一干完活就回家了。
