由题干可知本文是一篇对比议论类的文章，作文思路如下：
开头段：提出主题

As one of the main ways of people's daily entertainment activities, _____________________________, movies should be entertaining as well as instructive.

主体段：论证主题
①First of all, _____________________________（分论点一）,Entertaining movies can _____________________________. If there is no entertainment,  _____________________________.

②Secondly, ____________________________（分论点二）+具体展开论证好电影应该具有教育意义。
结尾段：In my opinion,____________________________ 总结，重申主题：好电影既应该具有娱乐性又应该具有教育意义。