Winners do not dedicate their lives to a concept of what they imagine they should be

问题描述:

Winners do not dedicate their lives to a concept of what they imagine they should be
这里是定语从句吧 concept后面为什么要加个of 这种定语从句我一直搞不零清

介词短语of what they imagine they should be做名词concept的同位语,全句意为“获胜者没有终生追求某种观念,即设想自己该是什么样子”.
提醒:what不能引导定语从句,这里的what从句是介词of的宾语从句.