This means 'not only A, but also B'. You use it to add new information. The new information (B) is often more important than A.
Noun + だけでなくPrimary
Verb [dictionary form] + だけでなく
い-Adjective + だけでなく
な-Adjective + な + だけでなく
This means 'not only A, but also B'. You use it to add new information. The new information (B) is often more important than A.
このアプリは、時間を記録するだけでなく、日々の活動を分析してくれる。
This app not only records time, but also analyzes your daily activities.
北海道の冬は寒いだけでなく、雪も多い。
Winter in Hokkaido is not only cold, but there is also a lot of snow.
彼女は綺麗なだけでなく、心も優しいです。
She is not only beautiful, but also kind-hearted.
会議に出席しなかったのは、山田さんだけでなく、部長もでした。
The ones who didn't attend the meeting were not only Mr. Yamada, but the department head as well.
我が社は国内市場の縮小に直面しています。だけでなく、海外との競争も激化しています。
Our company is facing a shrinking domestic market. Not only that, but competition from overseas is also intensifying.
Think of 'も' like a little helper word. It adds a feeling of "and also this!" It makes your sentence sound more natural. You can leave it out, but it is usually there.
This grammar is like "not only A, but also B." It is a common way to say this. "ばかりでなく" means almost the same thing. "ばかりか" is similar, but it shows more surprise. "のみならず" is a formal way to say it. "はもちろん" is different. It means A is already known, and then B is added.
Use this when you want to say "not only A, but also B." You use it to add more information. The second part (B) is often more important. It can also be more surprising or bigger.
Contrasts with(1)
Less formal alternatives(3)
Dialect / slang variants(1)
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