问一个英文句式The cave might never have been discovered had not the

问一个英文句式The cave might never have been discovered had not the 请分析这句英语的语法The cave might never have been discovered had not 英语翻译The incident might have been brushed aside had it not fo 英语翻译1.If the rules of perspective had not been discovered,no it might have been prevented had he received the care.中had是个 英语翻译,有奖哦.I might never have had the chance to feel the deep this is the story of a champion that might never have been.请 had he gone to the doctor right away ,he might have been ali over the years the cave wall had been shaped by 为什么用过去完成时 i would have been there on the spot had it not been for the 英语翻译I might have been skeptical had I not been used to respo Had it not been for the alarm clock she wouldn't have been l