英语分词的用法Supper finished (=After supper was finished),we started to_英语解答

英语分词的用法
Supper finished (=After supper was finished),we started to discuss the picnic.吃完晚饭,我们开始讨论野餐的事.
All the tickets having been sold out (=As all the tickets having been sold out),we had to wait for the next week’s show.所有的票都卖出去了,我们只好等着看下周的演出.
为什么会等于括号里的?还是有关独立主格,但是不理解.

人气：455 ℃　时间：2020-04-12 19:45:24

解答

对是独立主格,SUPPER FINISHED表示动作在discuss之前完成,用过去分词表示时间.All the tickets having been sold out 用现在分词的过去完成式表示已经完成的动作产生的结果.