2 否定語 + 倒置
否定を表す副詞 (語・句・節)が強調のために文頭に出ると、後ろは疑問文と同じ語順になる。
1. Never did I imagine that he would win the match.
2. Rarely does it snow in Osaka.
3. In no other animals can we see such sophisticated and elaborate use of tools
Part
4. Not until this morning did we realize our mistake.
5. Only when the door closed did I feel I was alone.