When cellphone became popular among students many years ago, many teachers were so worried about students’ attention in the class would be distracted, so they forbid students to bring cellphone in the classroom.

When cellphone became popular among students many years ago, many teachers were so worried about students’ attention in the class would be distracted, so they forbid students to bring cellphone in the classroom. As the time went by, though it has been admitted to use cellphone in the classroom, the schools still try to find a way to limit it.
很多年前，当手机在学生中流行起来的时候，许多老师都担心学生在课堂上的注意力会被分散，所以他们禁止学生带手机进课堂。随着时间的流逝，尽管学生得到许可可以在教室里使用手机，但是学校仍然试图想办法限制手机的使用。

Cellphone seems to be the teachers’ enemy in the classroom. When they are teaching knowledge, they find most students are lowering down their heads to play cellphone. It must frustrate teachers so much. In order to focus students’ attention, they figure out all the ways. Recently, it has been reported that the students’ cellphones were handed in and then destroyed in a college. Surely, the public condemned the school’s extreme regulation, which is not a wise choice to do it.
手机在课堂上似乎是教师的敌人。当他们在传授知识时，发现大多数学生都在低头玩手机。教师肯定会感到很沮丧。为了集中学生的注意力，他们想尽一切方法。最近，据新闻报道，一所高校的学生被迫交出手机并且被学校摧毁。公众肯定会谴责学校这种极端的做法，这并不是明智的选择。

Cellphone has been part of our life. Even the teachers can’t live without cellphone, let alone to grab it from students. The way to catch students’ attention is to make their lessons vivid and interesting. At the same time, it is important to let student realize what they will miss if they can’t focus attention. 
手机已成为我们生活的一部分就算是教师也无法离不开手机，更不用说从学生身边抢走手机。吸引学生注意力的方法是使课堂生动，有趣，与此同时，让学生意识到他们不集中精力听课玩手机将会错过什么知识也是很重要的。