议论文写作模式
一论述观点。
Different people have different ideas with regard/respect /reference to 主题词或主题句.Some people argue that 肯定的观点，宾语从句。While some other people claim that 否定的观点，宾语从句。As far as I am concerned ,I appreciate the former's idea.There are a number of reasons which can account for this.
二论述原因
There is no doubt that people' attitude toward 名词varies widely from individual to indiv-idual. But nowadays it's generrally accepted that 观点（同上文段肯定过的）。In the first place ,原因一，in addition, 原因二 and what's more important, 原因三。As a consequence,小结。
三结论
From what has been discussed above ,we may safely come to a conclusion that 同位语从句。