I had the beginnings of a headache...是什么意思？

I had the beginnings of a headache...

我有了头痛的先兆。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

beginnings

n. 开始( beginning的名词复数 )，根源，原始思想，前兆；

例句
I had the beginnings of a headache...
我有了头痛的先兆。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

headache

n. 头痛，令人头痛的事；

例句
Symptoms are a slight fever, headache and loss of appetite.
症状包括低烧、头痛和食欲不振。