had had been taken 是什么时态那解释一下两个had分别是什么作用

Everything he_____away from him before he left there.A.had been taken B.had had been taken 2.Everything he ______ away from him before he returned to his hometown.A.took B.had been taken C.had had been taken D.had taken Everything he ____ away from him before he returned to his hometown.A.took B.had been taken C.had had been taken D.had taken had had been taken 是什么时态那解释一下两个had分别是什么作用 had fallen ill还是 had been illHe has taken into hospital last week .In fact he _ill for the three months.请问中间是填 had fallen还是 had been 为什么, had been 关于had的用法问题Everything he __ away from him before he returned to his hometown.A had taken B had had been taken,why? Great changes ___ place in Hebei since 1980.A.have taken B.had been taken C.had takenD.have been taken They told us that sick boy ___to the hospital before they arrived A.has been taken B.has takenC.had taken D.had been taken If there had not been 改成 had not there been 是had not there been 还是had there not been? ______ for your advice,I would have been taken in.选项:a、Had it not been b、 Had it notc、 It had not been d、 Not had it been If he had been here yesterday,the experiment would have been successful.If you had taken your medicine yesterday,you would be better today.同样是虚拟语气,这两句话前半句都是过去完成时,为什么后半句一个是过去完成时,一 what had been done had been done. He was caught in a traffic jam and by the time he reached the airport his friend's plane ( ).A.has alread taken off B.had already taken off C.has been taken offD.had been taken off had been doing是什么是时态? had been doing是主动还是被动 34选什么,D是had been by the time it had been taken over by Oxford University这句话怎么翻译呀?