一、表达我认为：

　　I hold the opinion that...

　　I cling to the idea that...

　　As far as I am concerned ...

　　二、表达原因理由：

　　所以/结果：hence, thus, therefore, thereby

　　因为/由于：because of, owing to, due to

　　三、表达转折：Conversely, Nevertheless, Unfortunately, Whereas, Yet, Instead, In comparison，By contrast, On the contrary

　　四、表达总结归纳：

　　As a result, Consequently, Accordingly, Generally speaking，Briefly speaking

　　五、能使作文层次清晰的连接词：

　　第一：In the first place, First and foremost, Above all, On the one hand, For one thing第二：In the second place, Besides, In addition, What is more, Furthermore, Moreover, On the other hand, For another第三：Finally，Last but not least, More importantly, Even worse.