丰富的使用了长难句;文章用词太过单一,注意少数拼写错误;语言不流畅;连词使用偏少;请注意分段。
30% of the students think that it is not necessary to bring the mobile phone to the class which it is affect te students to study and it would increase the burden to their parents.but i think students can bring the cellphone to school but poewer off when u on.the times developed and don,t let the old thoughts to Constraint students.