3)动名词的完成式动名词的完成式所表示的动作发生在谓语动词表示的动作之前。

I regret having been unable to write to you earlier.我很抱歉未能早点写信给你。

His leg showed no symptom of having been injured.他的腿不像受过伤。

We were overjoyed at the news of China haying launched another man-made satellite.我们听到中国又发射了一颗人造卫星时都很高兴。

动名词的被动语态

动名词有两种被动语态形式：

一般式being written

完成式having been written

例：

This picture shows a child being beaten by a Japanese soldier.这张照片上一个孩子在遭到日本兵毒打。

The meeting was put off without his having been consulted.会议延期并未和他商量。

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