2009年12月大学英语四六级考试语法精要(三)

　　5. 分词与连词的连用

　　分词可与各种连词(如：when, while, once, until, if, unless, though, although, even if, as, as if, as though等)连用。连词+分词(短语)的结构在句中作状语，相当于状语从句。

　　She’ll get nervous when speaking in public.

　　He went on talking, though continually interrupted.

　　6. 分词的独立结构

　　分词作状语时，其逻辑主语与句子的主语应该一致;否则，分词应有自己的逻辑主语，构成分词的独立结构。独立结构一般位于句首，作伴随状语以及在科技文章中表示附加说明时，它常位于句末。分词的独立结构由名词、代词+分词构成，可以表示时间、原因、条件、方式或伴随情况等。

　　Weather permitting, the football match will be played on Wednesday.

　　Her son having been sent to school, she began to do some shopping.

　　He returned three days later, his face covered with mud and his clothes torn into pieces.

　　There were two parties yesterday evening, each attended by some students.