not only … but also意思是“不但…而且…”用于连接两个表示并列关系的成分，着重强调后者，连接两个并列主语时，
谓语动词的单复数根据
就近原则，also通常可以省略，当notonly放在句首，连接一个句子时，该句应使用倒装语序，而but also后面的句子仍用陈述语序。
not only … but also用法举例
not only … but also连接两个主语
例句：not only you but also he needs this book.不但你需要这本书，而且他也需要。
Not only the students but(also) the teacher is active in sports and games.不但学生，就连老师都积极参加体育运动。
Not only you but also he is going to the park this morning.今天早上不但你打算去公园，而且他也打算去。
Not only he but also we are going to the cinema this evening.今天晚上不但他要去电影院，而且我们也要去。
连接两个宾语
例句：He plays not only the violin but also the piano.他不仅拉
小提琴，还弹钢琴。
He can speak not only English butalso French.他不但会说英语，还会说法语。
not only放在句首连接一个句子时，该句应使用倒装语序。
例句：Not only did I see a film,but also cleaned my room.我不仅看了一场电影，还打扫了我的房间。
Not only can Mary speak French but also he can speak English.玛丽不但会说法语，而且还会说英语。
also可以省略
例句：Xiaoming is famous not only in China but (also) in the whole world.小明不仅闻名中国，而且闻名全球。