have现在分词是having。have主要用作助动词、动词、名词，作助动词时意为“已经”，作动词时意为“有；让；拿；从事；允许”，作名词时意为“人名；(芬)哈韦；(德)哈弗”。
一、have词态变化
第三人称单数： has
现在分词： having
过去式： had
过去分词： had
二、have短语搭配
have legs走得快 ; 有耐力
have expired已过期
have notice接到通知
They have他们有
still have还有
Have knowledge有知识
have never从来没有
Economists Have经济学家
三、have双语例句
1.We had all the usual problems attendant upon starting a new business.
我们遇到了创业时通常会出现的所有问题。
2.He had seldom seen a child with so much talent.
有如此天赋的孩子他以往没见过几个。
3.The school has a very high teacher-student ratio.
这所学校的师生比例很高。
4.All the rooms have access to the Internet/ Internet access.
所有的房间都可以接入互联网。
5.The situation has changed somewhat since we last met.
自我们上次见面以来情况有些变化。
6.Almost all homes have at least one TV set.
差不多每家都至少有一台电视机。
