after what was about ten minutes,the teacher gave the students the correct answer to the question.具体为什么要用what,
问题描述：
after what was about ten minutes,the teacher gave the students the correct answer to the question.
具体为什么要用what,
答
这个题有问题，after 后直接跟时间，不用跟what was
答
题没有问题,只是另外一种说法而已.what was 在这里对意思和语法都没有影响,是口语