in the past: 在过去,例如:
In the past, people used to write letters to communicate with each other.
过去,人们通常通过写信来互相沟通。
previously: 先前,例如:
Previously, I had never visited that city.
先前,我从未去过那个城市。
formerly: 以前,例如:
Formerly, the building was used as a factory.
以前,这座建筑曾被用作工厂。
这些说法都有其自身的语法规则和用法,可能因场景和句子而有所不同。
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最佳回答 2023-02-12