4、has/have been是现在完成时，has用于第三人称单数，had been过去完成时，跟前者相比，比前者更为过去。 2、when i met her, she had just returned from a job interview 4、he arrived in san. Official gmail help center where you can find tips and tutorials on using gmail and other answers to frequently asked questions. Have/has been done 与have/has done 的区别只在语态使用的区别，如下:
Has been 表示那人去了已经回来了 has gone 表示那人去了还没回来,还在哪儿 例如:tom has been to shanghai twice,now he is planning for another one.
'/><text x='50%' y='52%' font-family='Arial,Helvetica,sans-serif' font-size='44' fill='white' text-anchor='middle' dominant-baseline='middle'>Funy</text></svg>)
