岂但 meaning in English

not only 短语和例子
他岂但英语说得好, 就连日语也讲得满轻松自如。 not only did he speak english well, but he spoke japanese more easily. 他岂但读过此书, 还把所读的内容都记住了。 he not only had read the book, but (also) remembered what he had read