ともなると (tomo-naru-to): When it comes to; once reaching
～ともなると (tomo-naru-to)
Meaning
When it comes to; once reaching
Formation and usage
N／V dictionary + ともなると
Notation: N = noun; V dictionary = dictionary-form verb; V stem = the stem before ます; plain clause = plain-form clause; negative stem = the form before ない. Follow the attachment shown above.
Explanation
Introduces a notable stage or scale at which circumstances change significantly.
Examples
全国規模の会議ともなると、準備に時間がかかる。
When it is a nationwide event, the meeting, preparation takes time.
全国規模の試験ともなると、準備に時間がかかる。
When it is a nationwide event, the exam, preparation takes time.
全国規模の研修ともなると、準備に時間がかかる。
When it is a nationwide event, the training session, preparation takes time.
全国規模の発表会ともなると、準備に時間がかかる。
When it is a nationwide event, the presentation event, preparation takes time.
全国規模の面接ともなると、準備に時間がかかる。
When it is a nationwide event, the interview, preparation takes time.
How related patterns differ
に至るまで extends a range even to a final detail; から～にかけて gives a broad span. に次いで marks the next position. 暁には anticipates a milestone, とあれば assumes a special condition, and ともなると reaches a notable stage or scale.