previously
以前は未知の
describes something that was not known before the time of reference
以前は知られていなかった。
以前は不可能だった
used for something that was considered not achievable in the past
過去には達成不可能と考えられていた事柄に使われる
以前は考えられなかった
used for an idea or event so shocking it could not be imagined in the past
過去には何かが想像を絶するものであったことを示します。
refers to a person who was in a marriage before but is not now
以前は気づかれなかった
indicates that something was not seen or observed before
ある時点より前に何かが気づかれなかったことを示す。
indicates a prior status of being free from an obligation or liability
to refer to something that was spoken or written about on an earlier occasion
以前に注意する
to point out or observe something that was stated before
以前に述べられたことを指摘または観察する
to show or suggest something that was pointed out before
to have had possession of something in the past
to have been real or present in a place or situation in the past