Were it not for youth is short,and who would want to still time..

Were it not for 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 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. _____ 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 ------------for the heavy rain.i should have been here earlier A if it were not B were it notC had it not been D if it wasn't ____ the sun,nothing could live on the earth.A.Were it for B.Were it not forC.It were for D.If it is not for请说明原因, __,man could not live at all.A.were it not for the sun B.had it not been for the sun were it not for him是怎么翻译成如果没有他的? B___ it or not ,we were left waiting in the rain for two hours if it were not for protection we get from insect-eating animal是什么意思 It was not easy for us to understand that( ) when we were young Were it not for youth is short,and who would want to still time.. If it were not for… If it had not been for … but for… 有什么关系和区别,请高手详细讲解,谢谢 If it _ for the rain,we _ the picnic yesterday.A were not; could have hadB were not; could haveC had not been; could have had