`-` Đồng ý quan điểm. 

   As countries progress, there is an increasing number of smart device applications being created, attracting a large user base, with adolescents being the majority. Therefore, it is necessary and crucial to restrict the usage time of devices for teenagers. Firstly, when parents do so, it will help teenagers have time for other activities such as studying, exercising, socializing with friends, and personal development. Secondly, it helps them avoid negative content on the Internet. For instance, when they are exposed to violent content online, it can have negative effects on their mental and behavioral well-being. Thirdly, it reduces the prevalence of gaming addiction among teenagers, which is a highly significant benefit. Nowadays, with the strong development of online gaming platforms, they can have detrimental effects on children's awareness. As you know, excessive electronic gaming can lead to addiction, negatively impacting the health and academic performance of teenagers. Teenagers are the future, but there is no bright future for them if they abuse electronic devices. Therefore, parents need to limit teenagers' use of electronic devices to help them develop holistically.

`-` `-` `-` `-` `-` `-` `-` `-` 

${\text{Giải thích: }}$

`+` Therefore: vì vậy (chỉ nguyên nhân `->` kết quả) 

`-` will + V0: sẽ làm gì..

`-` For instance ~ For example: Ví dụ

`-` need + to V0: cần làm gì.. 

`+` Khai triển với 3 ý kiến được nêu:

`-` Giúp thanh thiếu niên có tgian cho hoạt động khác

`-` Tránh những nội dung bạo lực trên mạng

`-` Giảm bớt tình trạng nghiện game ở các thanh thiếu niên.