Original: I really believe that smoking is harmful to people’s health.

　　Revised: I have a profound conviction that smoking is harmful to people’s health.

　　亮点评析
　　conviction的意思是“坚定的看法或信仰”，have a profound conclusion表示对某种看法深信不疑，作文中提出观点的句子用have a profound conclusion会比用believe态度更坚决，立场更鲜明，而且believe这个词非常简单，是英语初学者就应掌握的词汇，换成have a profound conclusion立即增加了句子的复杂程度，体现了较强的语言运用能力。类似的提出观点的表达还有：
　　I hold a point of view that…
　　I hold the opinion that…