- 1.
开始，起初；起点 -
• at the beginning of the year 年初 -
• the beginning of the road 道路的起点 - 2.
起因，开端；起源 -
• the beginning of a quarrel 争吵的起因 -
• A good beginning is half done. 良好的开端是成功的一半。 - 3.
开始的部分 -
• the beginning chapters of a novel 一本小说的开头几章
用法说明
beginning
at the beginning既可表达时间概念(意为“在开始时刻”)，也可表达空间概念(意为“在开始的地方”)，而in the beginning仅可表达时间概念(意为“开始时”或者“起初”)。试比较：
He started his lecture at the beginning of the period.时间一到，他就开始上课了。
Put a title at the beginning of your com-position.给你的作文加个标题。
In the beginning, I didn't understand geometry, but later on, it became clear.起初，我不懂几何学，可是后来就懂了。