1）连接两个主语：
Not only you but also he can speak English.不仅仅你还有他也会说英语.
2）连接两个谓语：
I can not only swim but also skate.我不但会游泳而且还会滑冰.
3）连接两个宾语：
We study not only English but also Chinese at school.我们在学校不但学英语还学汉语.