现在完成进行时是英语语法中的一个时态，它表示正在进行的动作自过去某一时刻开始一直延续到现在，并且可能会继续进行下去。下面是一些常用的现在完成进行时例句。
- 我们一直在等待这个机会，我们已经等了两个小时了。
We have been waiting for this opportunity and we have been waiting for two hours.
- 她一直在学习法语，已经学了三年了。
She has been studying French and she has been studying for three years.
- 他们一直在计划这次旅行，已经计划了几个月了。
They have been planning this trip and they have been planning for several months.
- 我们一直在等待他的回信，已经等了一个星期了。
We have been waiting for his reply and we have been waiting for a week.
- 我们一直在思考这个问题，已经思考了很长时间了。
We have been thinking about this problem and we have been thinking for a long time.
现在完成进行时可以用来描述一个正在进行的动作，同时也可以用来描述一个延续的状态或情况，如上面的例句中所示。这个时态在日常交流和商务英语中都非常常用，掌握它的用法和例句对于提高英语表达能力非常有帮助。
