プログレッシブ英和中辞典(第5版)の解説
a・go
/əɡóu/
a week ago today
先週のきょう
long, long ago
昔々
not (that) long ago
つい最近
a few minutes ago
2,3分前に
long [a long time, some time] ago
ずっと前に
a moment [a little while, a short while, a minute] ago
ちょっと前に
“How long ago did you see him?” “Six months ago.”
「どのくらい前に彼に会いましたか」「6か月前でした」
[原義は「行ってしまった」]