3課 限定・非限定・付加 教科書 p.16〜19
Limited / unlimited / additional — only…, not only…, let alone…
接続：名・動辞書形 ＋ にとどまらず
It doesn't stop at..., but also spreads to.... The scope exceeds the original framework.
注意 / Note：The latter is often a much broader scope (the whole country, the whole world...). Writing.
比較 / Compare：〜にとどまらず（wider range）↔ 〜はおろか（negative afterword）.
よく出る形 / Common form：名・動辞書形＋にとどまらず＋（より広い範囲）も.
その影響は国内にとどまらず、世界中に広がった。
That influence does not stop at home but spreads throughout the world.
彼の活動は研究にとどまらず、教育にも及んでいる。
His activities are not only in research but also in education.
被害は農業にとどまらず、観光業にも広がっている。
The damage does not stop at agriculture but spreads to tourism.