英语语法：过去完成进行时

 　　过去完成进行时(The Past Perfect Continuous¹ Tense)：表示过去某时前一直在进行的动作，由“had been+现在分词”构成：

　　I asked him what he had been doing．

　　我问他一盲在干什么。

　　He had been working all day and was very tired．

　　他干了一天的活很累。

　　She showed me the book she had been reading．

　　她把她看的书拿给我看。

　　He told her that he had been thinking of her all the time．

　　他告诉她他一直在想她。

　　Jane had been doing the work for a year before I took over the job．

　　在我接手这工作前Jane干这工作干了一年。

　　I had been waiting for you for one hour when she came in.

　　她进来时我已经等了你1个小时。

1 continuous   

adj.继续的，连续的，持续的，延伸的

参考例句：

• She finally got in after 10 years'continuous effort.坚持不懈地努力了十年后，她终于当选了。
• We must be continuous to study.我们必须不断学习。