not only... but also ~
Expresses 'not only A, but also B', emphasizing that B is even more remarkable given A.
This pattern compares two things or aspects, stating that the first is already significant, but the second is equally or more so. It is used in formal or written contexts, often in essays, speeches, or news. The structure is: Noun1 + もさることながら + Noun2. For example, 彼は成績もさることながら、スポーツも得意だ means 'Not only are his grades good, but he is also good at sports.' The second part often contains an evaluation or additional information that the speaker finds noteworthy.