是做状语,表示状态．这个用法为省略的用法．
例如, a boy rushed out of the room ,when he was crying.
由于状语从句的when 引导的时间状语的主语和主语主语一致,可以把从句的主语和连词省略,然后剩下的谓语动词主动用ing 被动用 ed.
于是这句话可以变成 a boy rushed out of the room , crying.
还有,(Because she was )ill, she didn't want to do anyting.括弧为省略部分.
and 引导的也可以省略.She stands here and she is smoking.
she stands here ,smoking.
你的这个题目还原就是,The sun rises from above the sea, and it is warm and brilliant.
还有你说的第二句用法相同.如,(Because the room was )about four meters long , the room served as reception hall for important person.