这句话怎么改下

这句话怎么改下
Manyparents believe that children should not watch TV.They have three main reasonsto support their proposal.One reason is that someviolent shows or channels in television can negatively affect children’scharacteristics Another reason is that television viewing is avery lethargic activity and it has been proved that there are some connectionsbetween television watching and childhood obesity.The last reason is that watchingtelevision can have negative effect on children’s eye.However,in my opinion,none of these three reasons is convincing.
However,in my opinion,none of these three reasons is convincing.老师说因为这篇文章的观众是父母,所以不in my opinion不好.要改成：父母的这三条原因是不成立的.应该这么说?