has 加ed是现在完成时态。
例句
Her service has improved.
她的发球有了提高。
Vegetarianism has been mainstreamed.
素食主义已为大多数人所接受。
This fish has gone off.
这条鱼已变质了。
Alex has already gone.
亚历克斯已经走了。
The dog has worms.
这条狗体内有寄生虫。
