一、有几个问题，需要给网友澄清：

1. 动词时态很重要，不可乱用。

2. 过去完成时和虚拟语气，是两个不同的概念，不可划等号。

3. 孤立的一个句子：He was not caught by the police until Dec. 2003.      表达过去事件，使用一般过去时没错。

（1）本句含有一个明确的过去时间状语 until Dec. 2003。若用过去完成时，没有参照的时态。

（2）如果把 until Dec. 2003 改为从句，就可以使用过去完成时（但不是必须使用），因为有从句中谓语动词的时态做参照：

He had not been caught by the police until someone reported him to the police.

又如：

Until she spoke I hadn't realized she wasn't English.

直到她开口说话我才知道她不是英格兰人。

《牛津词典》

或者有前文提供语境：He was in prison and he had not been caught by the police until Dec. 2003.

这时，had not been caught 以 was 为参照。

二、A new school has been built up last year. （误）

现在完成时常用来表达过去发生的动作，但不可以跟明显的过去时间状语连用，因为现在完成时与现在情况密切相关（“现在”二字意味深长）。改正办法（原句用 up 错误，删掉）：

A new school was built last year.

A new school has been built.

三、I won't stop until I succeeded？

此句有误。改为：

I won't stop until I succeed.

I won't stop until I have succeeded.