比如Compare the advantages and disadvantages of three of the following as media for communicating information. State which you consider to be the most effective. " comics " books " radio " television " film " theatre
开头点明你要陈述哪种媒介,并且认为哪种most effective,这就是点题。
中间开始介绍这三种的优缺点,这就需要用到你平时的语言积累,比如书是数千年文化传承的主要载体,记录了人类数千年文明发展史,但是近年来有了更多轻便的信息承载载体,书籍相比电视和无线电,已经不能作为最重要的媒介了。巴拉巴拉,陈列你的观点,适度延伸,展示你的英语功底。
最后再总体对三种媒介做一个点评,并强调xx媒介的确是most effective。