时间状语: Working in the factory, he learned a lot from the workers. Having read the letter, she got very excited. 注①:现在分词作时间,原因状语:如果分词所表示的动作和谓语的动作同时发生或几乎同时发生.用现在分词的一般式.如果分词动作明显在谓语之前发生.用现分完成式. Hearing the news, they all jumped with joy. Having arrived at the factory, they immediately set to work. 注②:在作时间状语的分词前.可加连词while, when, 介词after, before, on. Be careful when crossing the street. Don’t mention this while talking to him. On arriving in London, he managed to get in touch with her. =As soon as he arrived in London. 【查看更多】
