Mother wanted to be a good provider,a role she ________ since her marriage to Father.A shoulders B shouldered C is shouldering D has been shouldering为D,因为since要加完成时态.可问题是如果选D的话该句子不就有两个动词（wanted,has been shouldring)了吗?选B不是可以刚好让shoulderd作分词吗?
Mother wanted to be a good provider,a role she ________ since her marriage to Father.
A shoulders B shouldered C is shouldering D has been shouldering
为D,因为since要加完成时态.
可问题是如果选D的话该句子不就有两个动词（wanted,has been shouldring)了吗?选B不是可以刚好让shoulderd作分词吗?
she has been shouldering做的是a role的同位语从句，has been shouldring做的是从句里的谓语，和做主句谓语的wanted没有冲突。如果选B的话从句里就没有完整的谓语了。～～～
是定语从句啊，先行词是a role,同时，a role 又做a good provider的同位语来解释说明它的。a role 后面省略了which.Since后面用完成时，根据意思选D
这个句子成分有点复杂……先来说后面这部分,a role和she之间省略了which,这个'she _______ since her marriage to Father'是用来界定a role的定语从句；而'a role……'是'a good provider'的同位语,因此,后面这部分...
朋友注意了哦！！！
a role……后面的可是定语从句呀，she has been shouldering since……是修饰a role的呀！
定语从句怎么能没有谓语呢
意思是：自从她和爸爸结婚后所肩负的角色
至于a role she has been shouldering since her marriage to father这句话嘛，做的是provider的同位语，解释provider是怎么样个角色