Charles did what he could the scrvant ,although he himself was in dangerA resue B resued C to rescue Drescuing

Charles did what he could the scrvant ,although he himself was in dangerA resue B resued C to rescue Drescuing
Charles did what he could the scrvant ,although he himself was in danger
A resue B resued C to rescue Drescuing

Charles did what he could the scrvant ,although he himself was in dangerA resue B resued C to rescue Drescuing
C
what he could 是一个名词词组,意思是他所能做的
所以句子可以看成Charles did sth.to rescue the servant
查尔斯竭尽所能去营救仆人

C to rescue
to 表示目的