have是一般现在时态。
have
vt.有;持有;占有;由…组成;显示出，带有(性质、特征)。
aux.与过去分词连用构成完成时。
第三人称单数 has.
现在分词 having.
过去式 had.
过去分词 had
The two groups of children have quite different characteristics.
这两组儿童具有截然不同的特点。
Now she won't have to go out to work any more.
现在她不必再出去工作了。
There have been many changes in recent years.
近几年发生了许多变化。
Call me if you have any problems regarding your work.
你如果还有什么工作方面的问题就给我打电话。
No new SARS cases have been reported in the region.
该区没有新增非典型肺炎病例。
温馨提示：
