现在分词的一般式和完成式

(1) 现在分词的一般式即现在分词的基本形式doing，也就是动词原形加上词尾-ing后所采用的形式。如：

There were some children swimming in the river. 有些小孩在河里游泳。

I didn’t talk much to the man sitting next to me. 我没和坐在我旁边的人多讲话。

The taxi taking us to the airport broke down. 送我们去机场的出租车中途坏了。

He is talking to a girl resembling Joan. 他在和一个貌似琼的姑娘谈话。

The woman washing the dishes is my aunt. 洗盘子的那个妇女是我姑妈。

(2) 现在分词的完成式为having done，也就是将动词现在完成时have done的第一个词（have）改为现在分词。如：

Having invited him here to speak, we’d better go to his lecture. 我们邀请他来这儿讲演，所以我们最好去听讲。

Having talked to the witnesses I now have a better idea (of) what happened. 我与证人谈过话，现在对所发生的事情更清楚了。

Having bought out all his partners he now owns the whole company. 他买下合夥人的全部股份，现在整个公司是他的了。

Not having received an answer, she decided to write him another letter. 由于没得到他的回信，她决定再给他写一封信。

The river having risen in the night, the crossing was impossible. 夜里河水上涨，渡河不可能了。

Having spent 25 years righting his own mistakes, he is anxious that children should not waste opportunities. 他花了25年的时间弥补自己的过失，因此他非常渴望孩子们不要错失良机。