They have announced that they will invite only three of us to the party.
问题描述:
They have announced that they will invite only three of us to the party.
要求主句转为被动语态:
That they will invite only three of us to the party has been announced.
It has been announced that they will invite only three of us to the party.
第一句如果错了,错在哪了?
答
都对.第一和第二句是等效的,第二句只是用了形式主语it来替代了逻辑主语that从句而已.