1. Some people think that …. 有些人认为…

　 　To be frank, I can not agree with their opinion for the reasons below. 坦率地说，我不能同意他们的意见，理由如下。

 　　2. I believe the title statement is valid because…. 我认为这个论点是正确的，因为… 

 　　3. I cannot entirely agree with the idea that ….我无法完全同意….这一观点的说法…

 　　4. Along with the development of…, more and more….随着……的发展，越来越多… 

 　　5 It is commonly/generally/widely/ believed /held/accepted/recognized that….它通常是认为… 

 　　6. As far as I am concerned, I completely agree with the former/ the latter.就我而言，我完全同意前者/后者的观点。