动名词的完成时是什么
如果动名词的动作发生在谓语动词所表示的动作之前,通常用动名词的完成时态。
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
动名词的另外一个形式是一般式。一般式所表示的动作与谓语动词表示的动作同时发生,或在谓语动词表示的动作之后。如:
Children enjoy watching colour TV. 儿童喜欢看彩色电视。(enjoy与watching同时)