have
英 [həv] 美 [hæv]
1).aux.
用以构成完成式及完成式的不定式，表示已经…
2).vt.
有，具有;拿，取得;从事;必须，不得不
3).n.
〈口〉有产者，有钱人;富国;〈英俚〉欺骗，诈骗
一、第三人称单数： has 现在分词： having 过去式： had 过去分词： had
二、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。