英语语法精粹：现在分词的完成式

 　现在分词的完成式主要用在状语中，表示这个动作在谓语所表示的动作之前完成。

　　【例如】

　　Having succeeded in the last examination, she was more confident of another success in the coming one.

　　Having found the cause, they were able to propose a remedy.

　　Having finished his homework, the boy went to play computer game.Notshavingsmade adequate preparations, they thought it better to postpone¹ the excursion till next week.

　　独立结构中也可以用现在分词的完成形式。

　　【例如】

　　His parentsshavingsdied, the orphan² is now taken care of by the government.

　　The guestsshavingsleft, they resumed their discussion.

1 postpone   

v.延期，推迟

参考例句：

• I shall postpone making a decision till I learn full particulars.在未获悉详情之前我得从缓作出决定。
• She decided to postpone the converastion for that evening.她决定当天晚上把谈话搁一搁。

2 orphan   

n.孤儿；adj.无父母的

参考例句：

• He brought up the orphan and passed onto him his knowledge of medicine.他把一个孤儿养大，并且把自己的医术传给了他。
• The orphan had been reared in a convent by some good sisters.这个孤儿在一所修道院里被几个好心的修女带大。