1、倒装结构可以用来表示前面所阐述的肯定情况也适用于后者。例如，So has Bob, which means that Alice has as well.
2、用so加主语加助动词／be动词／情态动词可以表示对于前面事实的肯定，意思是“的确如此”。例如，So does she, indicating that she does agree.
3、用so加形容词／副词加that来引导结果状语从句。例如，So beautiful was the scenery that it took my breath away.
4、用so加形容词／副词加that来引导比较状语从句。例如，So much taller is he than his brother.
