2015年职称英语考试已经开始备考，本阶段应该多整理一些基础词汇和语法。为此，网校特整理了“2015年职称英语考试语法知识”供您参考，希望对您有帮助！

分词的时态

1）与主语动词同时

Hearing the news,he jumped with joy.听到这一消息，他高兴得手舞足蹈。

Arriving there,they found the boy dead.刚一到那儿，他们就发现那男孩死了。

2）先于主动词

While walking in the garden，he hurt his leg.在花园里散步时他伤了腿。

分词作时间状语，如果先与主动词的动作，且强调先后,要用having done.

Having finished his homework,he went out.

=As he had finished his homework,he went out.

做完作业后，他出去了。