1.not only... but (also)...在句中常用来连接两个对等的成分，also可以省略。如：
他不但在学英语，而且还在学法语。
He is learning _______ English _______ French.
2. not only... but (also)... 用来连接两个主语时，谓语动词的单、复数遵循“就近原则”，即和but (also)后的名词或代词的数一致。如：
Not only Zhou Xia but also her parents _______(be)fond of watching football matches. 不但周霞，而且她的父母都喜欢看足球比赛。
Not only you but also he _____(be)tired of having one examination after another.不但你，而且他也讨厌一次接一次的考试。
3. not only... but (also)... 连接两个分句，当not only位于句首，第一个分句中的主语和谓语要部分倒装来表示强调，而but (also)后的分句仍用陈述语序。如：
Not only is the teacher himself interested in foreign films，but also all his students are beginning to show an interest in them.
不但老师自己对外国电影感兴趣，就连他所有的学生也开始对外国电影感兴趣了。
Not only does Miss Li like music, but (also) she likes sports. 李小姐不但喜欢音乐，而且还喜欢体育。
【注意】使用中注意两点：
1、就近。指谓语形式取决于离它近的主语。
Not only the students but also the teacher _____(read) English every day.
Not only the students but also the teacher ____(be)against the plan.
Not only the teacher but also the students _____(be)against the plan.
2、一致。not only 与 but also后面所接的词类要一致。
She can not only sing but also dance.
【用法小结】
1. not only … but also 应连接两个相对称的并列成分。例如：
Not only Mr Lin but also his son joined the Party two years ago. （连接两个主语）
I not only play tennis but also practice shooting. （连接两个谓语动词）
He plays not only the piano but also the violin. （连接两个宾语）
They speak English not only in class but also in the dormitory. （连接两个地点状语）
