2019考研英语作文经典框架：第一个理由段主题句

考研网

　　第一个理由段主题句
        　　The first reason that can be seen by every person is that _____.
        　　The main reason why ____ is that ____.
        　　The first and most important reason is that ____.
        　　One of the most evident reasons is that____.