not onlybut also主语不同时用法

Not only …but also它构成的词组担任主语时，主语不同，谓语动词随but also后面的部分而定。

比如:

Not only you but also your father is coming。不但你，而且你父亲也要来。

Not only the sons but also their father likes playing computer games.不但是他的儿子们，连他也喜欢玩儿电脑游戏。