结构：
Part1: As we all know，… is becoming more and more…,different people have different opinions on it/every coin has two sides.
Part2: The advantages of it are(on the one hand)…First of all… what’s more…  besides…   last but not least….. The disadvantages of it are(on the other hand )…To begin with,… next…  finally… 
Part3: In my opinion， …= To my mind， …= As far as I am concerned， …= I am of the opinion that  in short; briefly/ in brief ; generally speaking, in a word,
加分句子：
Shopping on the internet is becoming more and more popular among the middle school students.
In my opinion，it’s not wrong to follow the fashion， but the most important thing is how to use the mobile phone in a right way and do not disturbed others.