dead of nightという表現が一般的でしょう。in the dead of nightというイディオムは良く使われます。0:26 gone in 180 seconds. it's the dead of night. a gang (of robbers) swoop on a car parked in the owner's driveway in Sutton Coldfield. 三分間あれば十分だ。真夜中のことだった。車泥棒たちが駐車している車に群がってきた。注；gone in 180 seconds は gone in 60 seconds（自動車泥棒の映画）のもじり。
http://www.youtube.com/watch?v=QFA6llTeEVk&list=PLCD01D4FBF6DA5C1F&index=162&feature=plpp_video 0:18 vandals raided Seattle's Washington Park Arboretum in the dead of night. 真夜中に狼藉者たちがワシントン公園の樹木園を破壊した。
http://www.youtube.com/watch?v=OliSrh7RrrI 0:02 an annual tradition. thousands lined up in the dead of night.毎年の恒例行事、数千人が真夜中に行列を作った。
http://www.youtube.com/watch?v=eF3ERzblm3E 0:23 Blackbird singing in the dead of night
http://www.youtube.com/watch?v=_lXQ5QNwww4&feature=g-all-u 0:17 in the middle of the night
http://www.youtube.com/watch?v=nK7d7lmWmHI 0:23 David Whitby and his family had to flee their home in the dead of night.
http://www.youtube.com/watch?v=LaZDMjNWzzs 0:18 in the dead of night
http://www.youtube.com/watch?v=11iPuwGRiA0 1:11:31 it's the middle of the night.
参考リンク
http://www.youtube.com/watch?v=c8Nv0kqGCVY 8:41 in the dead of winter 真冬には
http://www.youtube.com/watch?v=_JKPQ0FPHcU 1:32 in the dead of winter
練習問題解答
a-6599 in the dead of night
a-7108 in the dead of night
b-2689 in the dead of night
