どのくらい経ってv かを表す
過去のある時点で, 何かが起こってからどのくらい時が経過したのかを寺3
過去完了形を使って次のように表す。
s It had been 7がve ye87S S/nC6 ImY father had died.
s 万ve yeg/S had passed SnC6 「TY father had died.
s It was 7ve years since my father had died.
(私の父が亡くなって5年が過ぎていた)
since のあとの文では過去形を使ってもよい。
s 万ve years had passed SinC6 my father died.