2012大学英语四级语法：分词（三）

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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。
  @3 E6 B% B3 s　　She’ll get nervous when speaking in public. 中华考试网(www．Examw。com)
　　He went on talking, though continually interrupted.
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. 中华考试网(www．Examw。com)
$ u: W) {: e3 R4 Q& H9 j　　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.