have been at

• conj. 到过(去过)

have been at的用法和样例：

例句

1. I have been at sea for four lousy weeks in this tub.
   我已经乘这条老爷船在海上航行了四个倒霉的星期。
2. All her clothes have been at pawn.
   她所有的衣服都已典当了。
3. Look at the time! We shall have been at the theatre ten minutes ago.
   瞧都什麽时候了！十分钟前我们就该到戏院了。
4. If the lights were on, they must have been at home.
   如果灯亮着，那么他们一定在家