i have not had it.这句话语法对吗?如何翻译啊?

i not have it!这句语法不对吧?是不是应该为i have not had it.对嘛?或是i do not have it? I have had it. i have not had it.这句话语法对吗?如何翻译啊? 一般过去式的问题I had left it on a chair beside the door adn now it wasn't there!这句应该是过去完成时吧那 I had not got my bag 对 还是 I had not get my bag 我的意思 就是 如果上2句是一般过去时 是不是 have 和 i did not understood the problem until he had explained it.这句可以改成i had not understood the problem until he explained it.这样 为什么 请问此句中的I'd 是would还是had?——though I’d had reason enough in the last few months——but even if I had,I would not have imagined it like this. had i known it ,i would have..HAD在句首? 关于这句英语句子的结构I've discovered i posses a large number of different talents and skills that i never would have thought were within me had it not been for my being open to trying new opportunities.had it not been for .这里的几个 Had it not been for your knowlege I should have been lost这个是句型是啥样的句型,倒装句还是虚拟语气的 59.The picture exhibition bored me to death.I wish I ________ to it.A) have not goneB) did not goC) had not goneD) should not have gone ______ 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 这句英语的结构是啥啊?If it had not been for your timely assistance in giving me first aid,I fear that the consequences might have been much serious.it had not been for your timely assistance in giving me first aid这句话的语法结购是 Had it not been for the free tickets,I would not have gone to the film so often.这是倒装,把这句话改成一般语序 请问下面这句英语怎么理解以及句子中的相关知识点I dont suppose I should have done so had I not known this legend. I wish it had not...啥意思? I would't have succeeded___for his help then.A.hadn't it beenB.were it notC.had it been notD.had it not been谢. I have had a letter for TOM 这句 have 与had if it had not been for ..句型对吗if it had not been for your timely assistance in giving me first aid,I fear that the consequences might have been much serious.这句话的开头：if it had not been for...,是if it is not 的过去完成时?