你的表达能力不错!现就个人观点,结合你的表述修改如下：
As we all know,shopping on the internet is【 becoming】 more and more popular 【at present】.A majority of people 【even 】think it is a kind of fashion nowadays.
After all,【every coin has two sides谚语“凡事必有两面性”】.There are manyadvantages about shopping on the internet.For example,we can buy many things we like while we needn’t go out.What’s more,a lot of things on the internet are much cheaper than those in the shopping mall.
However,there are also some problems about shopping on theinternet.For instance,we buy some clothes or shoes on the internet while we can’t ensure 【whether the size】 is right or not.Also,【sometimes 】we may be taken in by the merchants on the internet.
In my opinion,I prefer shopping on the Internet better.In this way,I can purchase clothes,shoes,food and so on much【 less expensively】.However,we should carefully judge from the information【 what merchants provide】 before we purchase them.In a word,shopping on the internet is a irreversible trend.
祝你开心如意!