"why did you do so"这句话有没有语法错误?是什么意思?

why did you do so这句话有没有语法错误?是什么意思? why did you do it Why did you do it? 'Why do you think so?' why do you say so? why do you so confident? Why did you come back so Why Did You Do It 歌词 Why do you so for me ----这句话是什么意思? why do you say?为什么都说 why do you say so?这算标准,还是习惯,为什么要加so? so i do so Anne does so you did why do i miss you so i do not why you think so? why do you think (so)对吗 why do you think so little missy? WHy dO yoU loVe ARril So mUch? Why do you hate him so?意思 Why do you ____ so late?