No composer was considered worthy of the name until he had written an opera.

作曲家直到写出一部歌剧来才被认为是名副其实。

《牛津词典》

He had written letters on official notepaper to promote a relative's company.

他用官方信纸写信推荐一个亲戚的公司。

《柯林斯英汉双解大词典》

By the time John turned 33, people were reading what he had written.

约翰33岁时，人们在阅读他写的东西。

youdao

In eighteen fifty-eight, he sent Darwin a short study he had written containing ideas about evolution.

VOA: special.2009.12.01

He published a treatise that he had written earlier on grammar, inventing his own system for the understanding and the learning of the Latin language.

发表了一篇他之前写的关于语法的论文，在这篇论文中他创建了自己的一套理解和学习,拉丁文的体系。

耶鲁公开课 - 弥尔顿课程节选

You remember Sonnet Seven, "How Soon Hath Time," the sonnet that he had written on the sad occasion of his twenty-third birthday.

你们记得《十四行诗第七首》么，“时光飞逝,弥尔顿写给自己23岁生日那个悲伤的日子的十四行诗。

耶鲁公开课 - 弥尔顿课程节选

Earlier on Tuesday, he had written on his blog a critique of the same-sex marriage bill.

BBC: Man kills himself inside Notre-Dame cathedral in Paris

Mr. Alibekov said he had written a long report for the CIA about this program.

CENTERFORSECURITYPOLICY: Freedom Flame 2013

He had written safety rules on a whiteboard: Never point your gun at anyone.

NEWYORKER: Battleground America