After working ten years there, he ended up (as) manager of the firm.

参考译文：在那里工作了10年之后，他最终成为了这个家公司的经理。

这里的 (as) manager of the firm 是句子状语成分

end up as +名词 表示最后以“身份，职业，结局/下场”结束，最后成为，最后落得一个...下场，结局

Many end up as team leaders, which inclines them to co-operate with the bosses. 

很多人最后成为团队领袖，这使得他们易于和上司合作

 If we reuse something, it will not end up as waste.  

如果我们重复使用一件东西, 最终它就不会成为废物.

They have managed to end up as partners in their new business.  

他们最终成为了他们新业务的合作人.

Fresh pumpkins might end up as jack - o - lanterns at Halloween.  

新鲜的南瓜可能会在万圣节的时候最终变成南瓜灯.

He will end up as president someday.  

他有朝一日能成为总统.

end up的其他搭配用法：

【1】end up with 以....方式二告终其反义词为 begin with （强调方式）

 If you do that, you'll end up with egg on your face.  

 你要是做那件事，必将以耻辱告终.

The meeting ended up with a song.

会议以一首歌结束。

【2】end up in 以...结果而告终 ，以....结束，结尾（强调结果）

Wasteful people usually end up in debt.  

挥霍浪费者最后往往负债。

If you continue to steal you'll end up in prison.  

你要是继续行窃终归得进监狱.

Their effort ended up in failure.

他们的努力以失败而告终。

The word"dangerous " ends in "ous"

单词"dangerous"以"ous"结尾。

【3】end up doing sth结果是(做)……，以(做)……而告终，结果变成……，最后发展为……

We ended up sleeping around the floor. 

我们最后都在地板上东倒西歪地睡了。

You could end up running this company if you play your cards right.  

你要是处理得当, 到头来这个公司能归你掌管.

I don’t care if they end up flipping hamburgers or if they end up being President of the United States. 

我不管他们最后是卖汉堡包还上最后做了美国总统 

If we impose a uniform food pattern on people, you we end up hurting many people. 

如果我们强迫人们吃同一类型的食品，我们最后会伤害许多人。

If the feds pull their money out in order to beef up security, we'd end up creating more problems than we solve. 

如果联邦政府抽出资金以加强国家安全，我们最后造成问题比我们解决的问题还要多。

You can end up paying as much to return an item as the purchase price of the item. 

你可能最后花在上退货的费用与花在购买商品上的钱一样多

I ended up telling him everything although I tried not to.

虽然我不想说,但结果我还是把一切都告诉他了。

If you don't watch the road more carefully, you'll end up having an accident.

如果你不更加留神注视着马路,你最后总要出事故的。

I never dreamed that I would end up owning such a lot of property!

我连做梦都没想到我最终会拥有这么一大笔财产!

【4】end up +adj.

 If he carries on driving like that, he'll end up dead.  

 他照这样开车, 早晚得死於非命.

 After gaining two fortunes, he ended up poor when he died.

尽管发了两次财,他死时却很穷。

Despite his efforts, he ended up unsuccessful after all.

尽管他奋发努力,最后还是没成功。

【5】end up +Ved.

They all ended up puzzled.

最终他们都感到迷惑不解。

同意陈老师解答。end up为不及物动词，后面需接必具性状语表示以何种方式结束或主语最终的结局（状态）。这个状语可以是介词短语、现在分词短语、过去分词短语或形容词（其前省略了系词being)。

(as) manager of the form用作动词ended up的状语，表示该谓语的方式。