英语就是这样(12) Present Perfect Continuous Tense

从英语的现在完成式(PRESENT PERFECT TENSE)和现在完成进行式(PRESENT PERFECT CONTINUOUS TENSE)的字体来看，这两个文法的差异是(CONTINUOUS)进行.

CONTINUOUS 意味着动作在进行，在持续中。如 I am reading. (我还在阅读着。)

现在完成进行式(PRESENT PERFECT CONTINUOUS TENSE)是讲解某一个动作完成后，又进行着。什么意思？你会不会因此迷茫迷糊，被弄糊涂了？

现在完成式(PRESENT PERFECT TENSE)的用意是表达当事人在他描述的时刻对某件事做了多久，做了多少。

例子：I have waited two hours. 至今我已等了两个小时。

I have lived here since year 2000. 我从2000年就住在这儿。

须注意的是上例子并没有明确的，清楚的交代当事人（1）在等了两个小时后，会不会持续的等 ？（2）从2000年住在这里至今，会不会持续的住下去？

如果，（1）当事人在等了两个小时后还要持续等，那么，他就要用现在完成进行式(PRESENT PERFECT CONTINUOUS TENSE)来表达了。I have been waiting for 2 hours.

(2) 虽然从2000年就在这里住，我还会续的住下来。I have been living here since year 2000.

想一想，下例的句子有什么不同？

1. He has worked as an accountant for 20 years.

1a. He has been working as an accountant for 20 years.

2. She has written many articles for the press.

2a She has been writing many articles for the press.