ago: [14] Historically, ago is the past participle of a verb. Its earlier, Middle English, form – agone – reveals its origins more clearly. It comes from the Old English verb āgān ‘pass away’, which was formed from gān ‘go’ and the prefix ā- ‘away, out’. At first it was used before expressions of time (‘For it was ago five year that he was last there’, Guy of Warwick 1314), but this was soon superseded by the now current postnominal use. => go
ago (adj.)
early 14c., shortened form of Old English agan, agone "departed, passed away," past participle of an obsolete verb ago "to go forth," formed from a- "away" (perhaps here used as an intensive prefix) + gan "go" (see go (v.)). Agone remains a dialectal variant.
实用例句
1. Mechanization happened years ago on the farms of Islay.
数年前，艾莱的农场就实现了机械化。
来自柯林斯例句
2. Rationing had put an end to a surfeit of biscuits long ago.
定量供应很久以前就结束了饼干过剩的状况。
来自柯林斯例句
3. Just a few days ago, I finished a commission.
就在几天前，我完成了一项委托创作任务。
来自柯林斯例句
4. I qualified as a doctor from London University over 30 years ago.
30多年前，我从伦敦大学毕业，取得了行医资格。
来自柯林斯例句
5. Their water was turned off weeks ago without explanation.