〜ことになると
Formation
N2TopicNeutralConversation
Variations
〜こととなると
Meaning
An expression used when a person's attitude or emotional state suddenly changes when talking about a certain topic. Usually followed by a clause describing a change in behavior or mindset.
Examples
彼は仕事のことになると、急に顔つきが変わる。
When it comes to work, his facial expression suddenly changes.
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Related Grammar
N4