〜ともなると

〜ともなると is a set expression meaning when it comes to. This is a fixed pattern or phrase commonly used in Japanese conversation and writing. Understanding set expressions helps you sound more natural and idiomatic.

This is a highly advanced pattern found mainly in literary works, formal speeches, legal documents, and academic writing. It is rarely used in casual conversation.

When to Use#

• When a change in scale or status brings certain consequences
• When something naturally accompanies an elevated situation

When NOT to Use#

• In casual conversation — this sounds literary or stiff; use a simpler expression

Example Sentences#

• 国宝展ともなると、警備体制は万全です。 — When it comes to a national treasure exhibition, security measures are thorough.
• 文化財の修復ともなると、専門知識が不可欠です。 — When it comes to restoring cultural properties, specialized knowledge is essential.
• 社会人ともなると、時間管理の重要性を実感します。 — When I became a company employee, I realized the importance of time management.

Practice#

Try reading these sentences aloud, then check the translation and vocabulary:

Common Mistakes#

1. Using 〜ともなると in casual conversation — This pattern sounds overly formal or literary in casual speech. Reserve it for formal writing, presentations, or situations that call for elevated language.
2. Direct translation from English — The concept expressed by 〜ともなると may not map one-to-one with its English translation. Focus on understanding the Japanese usage through example sentences rather than relying on the English gloss.