there had been certain gains.求翻译

If there had not been 改成 had not there been 是had not there been 还是had there not been? there had been certain gains.求翻译 We had never been there before翻译 she had't been there before 与 she had nver been there before 有什么区别? there have been怎样用?there have beenthere had beenthere has been有心向求学 there has been a time和there had been a time有什么区别? 翻译：The clues had been there from the start. Everything he_____away from him before he left there.A.had been taken B.had had been taken had been The meeting ___when I got there.A has begun B has been on C had begun D had been on .there had never been any sounds like that.请问had been 怎么讲啊.被动语态吗》? certa vision什么意思? I’d have noticed something （） wrong if I had been there.(a) had been (b) was (c) has been (d) is ______for the leadership of the Party,we should not have succesedA Had not it been B Had it not been C There was D Is there .There _______ great changes in my hometown by the end of 2000.A.have been B.were C.had been D.had had 请问下过去完成时的用法have you been there?yes ,i have just been there.i had never been there before.请问i have just been there.为什么这句不能用过去完成时而后句又为什么要用过去完成时? what had been done had been done. That man knows a lot about New York.I heard he ()beforeA.had gone to the cityB.had been in the thereC.had been there D.had been New York