Susan’d have worked abroad if she’d had the chance,wouldn’t she?

题目

Susan’d have worked abroad if she’d had the chance,wouldn’t she?
she'd 后面的d 指代什么

答案

指的是had
这里用的是第三条件句,结构是
If done,would have done.
句意为：如果有机会的话 苏珊就会出国工作,不是吗?