如题所述
反方：
Do housework waste a lot of time which should be on study.浪费时间。
May hurt him self due to limited knoledge of electric machine usage.可能由于电子用品只是的缺乏而让自己受伤。
Something important may be throw out without parents' agreement.一些重要的东西可能在没有父母的允许下被扔掉。