1、一旦
... once or twice 一两次，几次 once that 一旦…(就…) once too often 又一次(指超过限度而发生问题)；多次幸免此次遭殃；多次成功此次受挫 ...
Novelist Once Wrote That小说家曾经写道
He Once Declared That他曾经宣称
Once read that the British曾经读到过英国
Once again confirmed that再次确认
Once that had been一度
Once That Summer曾经那个夏天
Once You Say That当你说
Once I Realised That一旦我意识到
Once He Says That一旦他说那