倒装知识有讲到：
so...that/such...that结构放在句首时,句子需要用到装.
所给句子正好含有【so...that 结构】,因此就用了倒装.
例如：
【So 】amazing was the movie 【that 】we were all deeply moved by it.
该结构中,经常按照句子表达需要,加形容词或副词.
再如：
So hard are they working that we should praise them and learn from them.
祝你开心如意!O(∩_∩)O~~