怎么是用had been啊,were不可以吗?If it ________ yesterday afternoon,I would have gone fishing.A.had not been raining B.were not rainingC.would not be raining D.should not be raining

怎么是用had been啊,were不可以吗?If it ________ yesterday afternoon,I would have gone fishing.A.had not been raining B.were not rainingC.would not be raining D.should not be raining had been done 怎么用? (Had it not been) for your help ,we'd never have been able to get over the difficulties.括号里为什么那么写啊,我知道是虚拟倒装句,但怎么读者这么别扭,可不可只填Had it not,不写been,been是为什么要写上去呢? 英语语法.动词前的have/had,have/had been,was/were都分别用在什么时候/环境啊? they talk as if they had been friends for years .这里为什么用had been而不是were?不是事态倒退么,主句是一般现在时啊,为什么从句变过去完全了啊 had been 和had 怎么用?同学说had been是去了回来了,had gone 是去了没回来,但是had been不是过去完成时被动语态吗?这到底怎么用? had have was were 怎么用 has been done 与had been done要怎么用啊 He looked at me as if I were mad. 后半句是不是应该用 as if I had been mad啊? ：The skills that i never would have thought were within me had it not been for my being open to trfor my being open 是嘛意思 怎么还可以这么用 Would you have called her up had it been possible?Yes,but I ___busy doing my homework.A.was B.were C.had been D.would be 这个题怎么选啊?为什么? What place is it?Have not you seen that we ____ back where we _____?A.were;had been B.were;have been C.are;were D.are ;are假如有个选项是are:have been,用have been表示到过的地方,也就是了解那个地方 were, had beenwhen I called you this morning, nobody answered the phone. Where____? 答案是were,不可以是 had been 吗? 请问：虚拟语气中什么时候be动词用were,什么时候用had been? why did you say that you were busy?为什么用were而不用would be或者had been wish i had been here theni wish i________here thenA.had been B.were选A.为什么不是B.是对过去的假设还是现在将来呢 if the snake bite___poisonous,you___very ill now句尾有now,是现在的虚拟.我选were,would feel不对公式不就是这个吗,从句：If 主语+过去时(Be动词用were) 主句：主语+should/would/could/might+do 怎么答案选had been,woul have/had + been/be?总是搞不懂究竟是have/has been还是had been?怎么用?在什么时候请举几个例子再问一问：Had you been to Beijing你曾想过去北京吗？）He had been to Jinan before he came.在他来之前他曾想要去