though和although都表示“虽然……但是……”的意思,两者可以相互替换,但前者较为普通而后者较为正式。though(although)引导的让步状语从句可以置于句首,也可以置于句末。though和although引导让步状语从句,不可与连词but连用,但可与副词yet, still连用。例如:[文章来自:考试与评价 http://www.trgroup.com.cn/te/ '&V?A?%L_Ku#)] Although they are poor they are happy. 虽然他们很穷,但很快乐。