have+been +过去分词,构成完成式被动语态。如:
All means have been used to get him to change his mind. 为了转变他的想法,所有的办法都用过了。
have的的用法例句:
1 Alex has already gone
亚历克斯已经走了。
2 When I met her, she had just returned from a job interview
我遇见她时,她刚参加完一场求职面试回来。
3 You haven't sent her away, have you?
你还没有把她送走,是吗?
4 He arrived in San Francisco, having left New Jersey on January 19th
1月19日离开新泽西后,他到了旧金山。
5 I went out and had a walk around
我出去在周围散了一会儿步。