英语语法：现在完成进行时

 　　现在完成进行时(The Present Perfect Continuous¹ Tense)表示由过去某时持续到现在的动作，由“have(has)been+现在分词”构成：

　　It has been raining for three hours.

　　一连下了三个钟头的雨。

　　She has been working the whole morning．

　　她工作一上午了。

　　That’s the letter I have been expecting．

　　这是我一直在等的信。

　　What have you been arguing about?

　　你们在争论什么事?

　　What’s the matter with you? I’ve been here waiting for you for 3 hours!

　　你怎么回事？我已经在这里等了你3个小时了。

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。