not only but also用法
not only but also用法若连接两个成分作主语时，坚持就近原则，与靠近的主语保持一致。
1、若连接两个成分作主语时，坚持就近原则，与靠近的主语保持一致。如：
She likes not only apple but also orange. 她不但喜欢苹果而且喜欢橘子。
Not only the students but also the teacher was invited.
不仅学生们被邀请，而且那位教师也被邀请了。
2、not only放在句首，后接句子时要用倒装结构等等。
Not only are mothers not paid but also most of their boring or difficult work is unnoticed.
母亲们不仅得不到报酬，而且所干的乏味艰辛的活儿也很少被留意。
3、not only和 but also可同时使用，也可以将also省略，或者but also都省略。
She not only wrote the text but also selected the illustrations.
她不仅写了正文部分，而且还挑选了插图。
双语例句
1、She was not only intelligent but also very musical.
她不仅聪明，而且极具音乐天分。
2、Children's television not only entertains but also teaches.
儿童电视节目不仅有娱乐性而且还有教育意义。
3、In production, we demand not only quantity but also quality.
我们的产品不但要求数量多，而且要求质量高。
4、One should not only observe but also help.
不但要看，而且要帮。
5、Things here are not only inexpensive but also of good quality.
这儿的东西又便宜又好。
