什么时候句子用having done开头

如题所述

如:Having finished our task, we went on to help them with their task. Having done 是现在分词的完成式的主动结构,表示1.和句子主语构成主动关系,2.先于句子的谓语动词而发生。Having finished our task做状语使用,也可扩为状语从句:After we had finished our task, we went on to help them with their task.
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第1个回答  2011-12-09
Having completed my homework, I went out to play.

现在分词短语(完成时)做状语, similar to:

After i (had) completed my homework, I went out to play.

just for reference,good luck
第2个回答  2011-12-09
句子的前后主语一致时 并且表示的这个动作是主动的 情况下 用 having done本回答被提问者采纳