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

主谓一致以并列结构作主语的主谓一致由and both… and连接的并列主语Both Mr. Smith and his son (has have) gone fishing.Bread and eggs (is are ) a good breakfast.The manager and secretary (is are ) not here.3) 当and 连接的名词词组有each