來(lái)源:網(wǎng)絡(luò)資源 2024-06-16 12:41:48
ago,before“以前”差別大
(1) ago表示“從現(xiàn)在起若干時(shí)間以前”,常與動(dòng)詞一般過(guò)去式連用,而且ago只能作副詞。如:
He left Shanghai three days ago.
他三天前離開(kāi)了上海。
(2) before表示“從過(guò)去某時(shí)起若干時(shí)間以前”,常與過(guò)去完成式連用。before可作副詞、介詞和連詞。如:
I had finished the work two days before.
兩天前我已完成了工作。(副詞)
I visited him two days ago, but he had gone to Paris five days before.
我于兩天前去訪(fǎng)問(wèn)他,可是他已于那日5天前赴巴黎去了。(副詞)
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