区别就是两者用法是不一样具体的不同如下
do not 跟主语为I,You,They,We,第三人称复数搭配;They do not own the land in perpetuity.他们并不永久拥有这片土地。does not 用在主语为第三人称单数,跟he she it搭配;
Oil does not mix with water.