～はもちろん — Not to Mention
Means 'X, of course / not to mention X, but also Y.' It presents X as an obvious given, then adds Y as an additional (often less expected) item. Common and natural in both speech and writing. The second element usually takes も.
Structure
[Noun] + はもちろん(のこと) + [Noun] + も
Examples
彼は英語はもちろん、日本語も話せる。
Kare wa eigo wa mochiron, nihongo mo hanaseru.
He can speak Japanese as well, not to mention English.
英語はもちろん presents English as obvious, then adds Japanese
この店は味はもちろん、雰囲気もいい。
Kono mise wa aji wa mochiron, fun'iki mo ii.
This restaurant has great taste, not to mention a nice atmosphere.
はもちろん treats taste as a given and adds atmosphere
週末はもちろん、平日も忙しい。
Shuumatsu wa mochiron, heijitsu mo isogashii.
I'm busy on weekdays, not to mention weekends.
はもちろん marks weekends as the obvious case, adding weekdays
• Register: neutral; usable in everyday conversation. • The first item (X) is treated as self-evident; the second (Y) is the added point. • もちろんのこと is a slightly more formal variant.
Commonly confused with
The JLPT rarely asks whether you recognise a pattern — it asks which of several similar patterns fits. These are the ones ～はもちろん is tested against.
vs ～はもとより
はもとより has the same meaning but is more formal/literary; はもちろん is the everyday version.
vs ～ばかりでなく
ばかりでなく neutrally lists two items; はもちろん frames the first as an obvious given before adding the second.
More emphasis
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