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causing the shutdown 现在分词作结果状语
(1)分词在句子中作状语，可以表示时间、条件、原因、结果、让步、伴随等。分词做状语时，它的逻辑主语与句子的主语一致。作状语的分词相当于一个状语从句。
Hearing the news, they all jumped with joy. Using what you know of word stems and word formations, you can make a guess at the meaning of a new word.
(2)分词在句子中作状语，使用何种分词，要取决于分词与句子主语的关系：主谓关系用现在分词，动宾或被动关系用过去分词。
Not shaving enough hands, we turned to them for help.(we don't have enough hands).
Taught by mistakes and setbacks, we have become wiser and handled our affairs better. (We are taught / teach us).
(3)现在分词或过去分词作状语时，有时可以在分词前加 while，when, once, although, until, if 等连词。
When leaving the airport, she waved again and again to us. While waiting for the train, I had a long talk with my sister about her work.
