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一直；去過；已經（現在完成時）
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後接動詞ing形式，表示現在完成進行時
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have been的用法和樣例：
例句
- I have been away from Paris for two weeks.
我離開巴黎已經兩星期了。
- Flowers soon faded when they have been cut.
花剪下后很快就會枯萎。
- Had he not saved me, I might have been drowned.
我可能溺死了，若非他救了我。
- He is said to have been the richest man in Taiwan.
據說他以前是台灣最有錢的人。
- The three children have been sponging on their grandparent for over ten years.
10多年來這3個孩子一直靠他們的姥爺、姥姥養活。
- She is said to have been an actress about twenty years ago.
據說她在20年以前曾是一位女演員。
- More than200 films on agriculture have been released.
一共發行了200多部關於農業的影片。
- The old currency will have been phased out by 1990.
舊幣分階段至1990年將全部禁止流通。
以上內容獨家創作，受著作權保護，侵權必究
