这里是什么语法现象,即：什么从句呢?Buteventhoughhehadwoneverythingitwaspossibletowininhissport.此处everything与其后的itwaspossibletowin是什么关系?

Question

这里是什么语法现象,即：什么从句呢?
But even though he had won everything it was possible to win in his sport.此处everything 与其后的it was possible to win 是什么关系?

Answer 1

it was possible to win in his sport这句话是定语从句部分,修饰先行词everything,其实,定语从句的引导词that被省略了,因为它在定语从句中作win的宾语,（注意that不能换成which,因为先行词是不定代词everything）,即But even though he had won everything （that）it was possible to win in his sport.
另外说一下,你给的这句话应该是不完整的,因为这只是 even though引导的让步状语从句的部分,缺少主句,所以翻译出来的意思也是不完整的.
句意：但即使他是已经赢得了在自己运动项目上所能赢得的一切.