not only...but also 的倒装原则

1、not only…but also…的用法
用于连接两个表示并列关系的成分,着重强调后者,其意为“不仅……而且……”；其中的also有时可以省略.如：
She not only plays well, but also writes music.
她不仅很会演奏,而且还会作曲.
He not only writes his own plays, he also acts in them.
他不仅是自编剧本, 还饰演其中的角色.
Not only men but also women were chosen.
不仅仅是男的,女的也有被选中的.
He works not only on weekdays but on Sundays as well.
他不仅平时工作,星期日也工作.
Not only the students but also their teacher is enjoying the film.
不仅学生们在欣赏这部影片,他们的老师也在欣赏这部影片.
说明：若连接两个成分作主语,其谓语通常与靠近的主语保持一致.如：
Not only you but also he has to leave. 不只是你,他也得离开.
若连接两个句子,not only后面的句子要用倒装,如：
Not only did he speak more correctly, but he spoke more easily. 他不仅说得更正确,而且讲得更不费劲了.