have been

• 一直；去过；已经（现在完成时）
• 后接动词ing形式，表示现在完成进行时

have been的用法和样例：

例句

1. I have been away from Paris for two weeks.
   我离开巴黎已经两星期了。
2. Flowers soon faded when they have been cut.
   花剪下后很快就会枯萎。
3. Had he not saved me, I might have been drowned.
   我可能溺死了，若非他救了我。
4. He is said to have been the richest man in Taiwan.
   据说他以前是台湾最有钱的人。
5. The three children have been sponging on their grandparent for over ten years.
   10多年来这3个孩子一直靠他们的姥爷、姥姥养活。
6. She is said to have been an actress about twenty years ago.
   据说她在20年以前曾是一位女演员。
7. More than200 films on agriculture have been released.
   一共发行了200多部关于农业的影片。
8. The old currency will have been phased out by 1990.
   旧币分阶段至1990年将全部禁止流通。