Were it not for your help,I wound never be a good teacher.“要不是你的帮助”,应该指的是与过去事实相反,为何从句使用的是与现在事实相反的句型?

Were it not for for your help 与 with your help区别例句：were it not for his help ,i would have failed the exam If it had not been for与If it were not for有什么区别? 请问,该怎么理解were it not for Were it for their help,we(not overcome)__the difficulties )______ not for your help,I would be in trouble.　　A.It was B.Was it 　　C.It were D.Were it要说明为什么选择那个啊 谢拉 were it not for two factors不懂,成分 This might be a plausible hypothesis were it not for two factors. Were it not for friction ,we were not able to walk on this earth of ours.were,for friction,were not able to,of ours哪个错了. 求翻译下下面的短文I would liken you to a night without stars were it not for your eyes I would liken you to a sleep without dreams were it not for your songs .Is it beatiful ,dear? the star remind me of your eyes .We are young .there are lo were it not for your apparent fascination with knocking me to the ground意思是什么with在这怎么用啊 It not good for your eyes ____in the sun. ____(not smoke) It's bad for your health it is not good for your什么（健康）. 翻译for your information only,believe it or not if it had not been forIf it had not been for your help,i could not have done it.这个句子里有2个it前面这个做主语的it指什么(后面的it不用讲了)?若你是高手,请多举几个包含有if it were / if it had been的例子帮 一个虚拟语气的辨别Were he to come,tell him to ring me up.Were it not for your help.为什么两个都是虚拟语气的倒装 第一句要加个to _____ the clouds ,you would find the airplane in the sky easily.A Had it not been for B If it were not C If it had not been for D Were it not for选什么?为什么? were it not for the sun中for怎么解释啊