I just had my birthday a week before, and my father had bought me a new violin.

一个星期前我刚过完生日，我爸爸给我买了一把新小提琴。

youdao

Mother told me in a phone call that she had written to me a week before, but I haven't received anything.

妈妈在电话里告诉我，她一个星期前给我写过信，但我什么也没收到。

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We had to wait a week before we got the results.

我们不得不等候一个星期才拿到了结果。

《柯林斯英汉双解大词典》

They announced their new album only a week before it went on sale to avoid the usual publicity created by critics.

VOA: special.2009.02.06

Their memory improved significantly, so their intelligence level as taking by tests before and after compared to control group improved significantly after a single week.

他们的记忆力有明显改善，他们的智力水平,在实验前后进行测试，再与对照组相比,在仅仅一周后就有明显改进。

哈佛公开课 - 幸福课课程节选

Guests were not told where the wedding was to be held until a week before the event.

VOA: special.2010.08.09

It was a week before lower Manhattan was even close to being open for business.

FORBES: 9/11 Stories: 'No One Talks About That'

Obama's trip comes a week before the start of the Democratic National Convention in Denver, Colorado.

CNN: McCain questions Obama's ability to be commander in chief

Federle made a vow a week before he turned 30 to write a novel.

CNN: 'Idol' fans will love 'Better Nate Than Ever'