First, accordingto the author, ...... Whereas the professor argues that ….
Second, thepassage claims that …. Nevertheless, the professor immediately points out that …...
Finally, about……, theprofessor again argues against the passage. While the author points out that……,the professor reveals the truth that….
细节部分常用句型及短语：
For the sake of
It is illogicalthat...
...., whichperfectly explains the reason why/the assumption that...
Be contradictedto
This seeminglyconvincing argument is weakened by the professor’s statement that....
This is properlyexplained by the assumption that...
The professorreveals the fact that...