毎日ジムに行く夫に対して、1週間ジムにいってなかったのでいいたかったフレーズです。You haven’t been to the gym in one week right? You go there quite often.so,It’s been so long since you’ve been there hasn’t it?自然なフレーズになるように教えて下さい。
You haven't missed going to the gym like this for a long time.
It's been a while since you had such a long gap between workouts at the gym.
この場合は、次のような言い方ができますよ。
ーYou haven't missed going to the gym like this for a long time.
「こんなふうにしばらくジムに行かなかったことはないよね」
to miss going to the gym「ジムに行きそこねる」
for a long time「長い間」
ーIt's been a while since you had such a long gap between workouts at the gym.
「ジムでトレーニングの間がこんなに間隔が開くのは久しぶりだね」
to have such a long gap between workouts 「トレーニングの間にこんなに長い間隔がある」
ご参考まで!