“If it weren't for” 和“If it hadn't been for”一样吗?

“If it weren't for” 和“If it hadn't been for”一样吗? if it hadn't been for your timely help,I___. if it hadn't benn for your help,中的had been for是固定用法吗?for在这里什 if it hadn't been for love中的it做什么成分 if it hadn't been for your paticipation,this project wouldn' 英语翻译if it hadn't been for an awful spell of no business.(第一句 that tree looked as if it hadn't been watered for a long tim If it hadn’t been for the determined captain,all the passeng If it hadn t been for the accident,we would have had __durin if it hadn't been for the rain 改写 ______ ______the rain If it hadn't been for the captain,the ship would have sunk. 跪求Adele的专辑里面的If it hadn't been for love的歌词!