範囲の広がりの意外性を強調するEmphasize the surprising breadth of the range
例：
1. 赤ん坊が泣くと、私まで泣きたくなる。
When a baby cries, I even feel like crying.
2. 借金までして高い車を買わなくてもいい。You don't have to go so far as to take on debt to buy an expensive car.
3. 会ったことがない人にまで年賀状を出した。I even sent New Year's cards to people I had never met.