正方一辩开篇陈词： 　　In my opinion, I think smartphones are necessary for our school students because our world is changing very fast. Using a mobile phone can help us improve efficiency and access more useful and credible information with the help of the Internet, so that we can fit into society well.

　　Firstly, nowadays, this is an information age. Teachers use PPTs and computers for teaching, and many homework assignments also require the use of smartphones. So, it helps us improve learning efficiency. There are also many benefits with the help of phones. I think it's crucial for us to learn how to use phones in school to assist students.

　　反方一辩开篇陈词： 　　I believe that mobile phones are not necessary for middle - school students. Personally, in this age, mobile phones are everywhere. However, for middle - school students, the drawbacks outweigh the convenience.

　　For example, many students use social media during breaks or even in class. It's hard for them to resist the temptation of various applications.

　　Secondly, I think most mobile phones have a negative impact on mental health. The Internet contains a lot of complex information, and people are easily influenced by it.

　　下一环节自由辩论，正方首先发言。3，2，1，开始。

　　You have so many things in life that can distract you, just like a physical book or maybe computer games. There are so many things that can distract you when you almost want to study.

　　Yes, but today our topic is about whether the phone is useful or not, and whether it is really good for middle - school students.

　　Yes, it can help us improve learning efficiency and help us understand many hot topics. There are so many advantages.

　　But in our daily life, we can see many middle - school students spending hours on short - video applications. For example, my friend is a real middle - school student. He used to be a top student, but after he got a mobile phone, he became addicted to watching short videos. So he would stay up late at night, and as a result, his grades dropped significantly. So I think it's really terrible for a middle - school student to have a mobile phone.

　　OK, I also have many examples. Many learning apps and learning management apps can help us learn better by themselves and also improve our learning efficiency. So I think the key is not the mobile phone itself, but how you use it.

　　In fact, even though the phone can be useful for students, one thing should be noted. Most of them don't have much self - control. So the key is how to use them reasonably. I think maybe our teachers and parents need to guide them correctly. Do you think so?

　　Yes, but I think the phone can make our physical health worse. For example, if we use a mobile phone for a long time, we will have some health problems, right?

　　Ah, yes. Actually, there are so many things in our life that can distract us. Maybe it's a book, a picture, or maybe writing. There are so many things that make us not want to study.

　　Yeah, it's not just a problem with the mobile phone. And middle - school students relying on mobile phones...

　　Oh, I think if middle - school students rely on the mobile phone to look up answers for their homework, they will reduce their independent thinking ability.

　　Ah, OK. So I think the key at present is to teach students the ability and guide them to use mobile phones correctly because mobile phones are not the real problem. The key is how you use them reasonably. So I still think mobile phones are harmful to students.