这个英语句子该如何正确倒装?They were all so tired (that) they could do nothing but yawn.以 so 开头,
问题描述：
这个英语句子该如何正确倒装?
They were all so tired (that) they could do nothing but yawn.
以 so 开头,
答
So tired were they that they all could do nothing but yawn.
答
（Being）So tired ,that they could do nothing but yawn.
南鲟是对的吧，我的回答虽然不错但语法上不是楼主想要的倒装。
答
So tired were they all that they could do nothing but yawn.