[语法初识]

原句感知 自主探究 ①I had already heard that George didn't like being kept waiting.

②As we drew closer, I could see a whale being attacked by a pack of about six other killers.

③The meeting being held now is very important.

④He dislikes being interrupted in his experiment.

⑤Having been warned about typhoon, the fishermen sailed for the nearest harbour.

⑥I appreciated having been given the chance to study abroad two years ago. (1)如果动词­ing形式的逻辑主语与所表示的动词是被动关系时，动词­ing形式要用被动语态。

(2)动词­ing形式分为一般式和完成式：

一般式由"being＋动词的过去分词"构成，表示一个被动的动作正在进行或与谓语动词所表示的动作同时发生，如例句①、②、③、④。

(3)完成式由"having been＋动词的过去分词"构成，表示的动作发生在谓语动词所表示的动作之前，如例句⑤、⑥。 　　

[语法剖析]