some students even have no ideal of ^_they are studying ,so they waste much time playing
为什么用why 而不是what
人气：495 ℃ 时间：2019-11-21 09:48:19
解答
后半句说了“所以他们（学生）浪费很多时间去玩耍.”
根据意思可以推断出来前半句是说学生不理解为什么要学习.
如果用what,学生不理解在学什么,跟后半句不符,也不符合常识.
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