考试前急问，主语一致的问题，谢谢

如果句子结构为，

Like +n,  从句（譬如once从句），主句。

那么从句的主语是否需要和like后的n平行，还是只需要主句平行就可以。

原题是prep-1-120

Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its core, it
expands into a red giant, eventually ejecting its outer envelope of gases to become a white dwarf.

(B) Like any star of similar mass, once the hydrogen in the Sun's core is exhausted, then it expands
into a red giant and eventually ejects

以b选项为例，那么hydrogen是否需要和star平行。（不考虑其他问题）

谢谢

恩，主语是太阳。

不过我想问的是从句的主语需要和like引导的star一致吗，谢谢

......

hydroge is not 从句的主语, it is "bin yu" of exhausted...

被动语态，所以应该还是主语吧

就像hydrogen is exhausted单独的句子，如果h是宾语，那岂不是没有主语。。。

我想知道需要一致吗，明天就考拉