it doesn‟t matter what you do.这里what you do 做什么成分补语还是定语

Question

As long as you‟re happy，it doesn‟t matter what you do.

Answer 1

it doesn‘t matter what you do.你做什么都没关系。
it 是形式主语， what you do.是真正主语。

Answer 2

这里what you do 是名词性从句作真主语，是主语从句。前面的it是形式主语。

Answer 3

what you do是主语从句，是真正的主语，前面的it是形式主语。