beginning
1.from the beginning是“从头便…”，at the beginning是“起初…”，如I was opposed to the plan from the beginning是“我从头便反对这个计划（并不是后来才反对的）”，I was opposed to the plan at the beginning是“我起初反对这计划（后来不反对了）”。
2.at the beginning和in the beginning没有一定的区别。in the beginning现在比at the beginning少用。但说世界的开端必须用in，如In the beginning there were no men nor animals nor plants。begin at the beginning里的at不可改作in。
