例:only in this way can you learn French well.只有用这种办法,你才能学好法语.
only then did she understand her mother’s words.到那时她才理解她妈妈的话。
only when he got home did he realized that he had left the key in the office.当他到家,才知道把钥匙落在了办公室。
2否定副词never,hardly,seldom,little,not等或含有否定意义的短语置于句首.
例:Hardly could he believe his own eyes.他几乎不相信自己的眼睛.
No sooner had we reached the airport than the plane took off.我们刚到机场,飞机就起飞了。
Never shall I forget those days I spent with him.我永远不会忘了和他在一起的日子。
Under no circumstances will I believe her words.无论如何我也不会再相信她的话了。