Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendants, popularly known as killer bees, had migrated as far north as southern Texas.

(A) Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil,

(B) In less than 35 years since releasing African honeybees outside Sao Paulo, Brazil,

(C) In less than the 35 years since African honeybees had been released outside Sao Paulo, Brazil,

(D) It took less than 35 years from the release of African honeybees outside Sao Paulo, Brazil, when

(E) It took less than the 35 years after the time that African honeybees were released outside Sao Paulo, Brazil, and then

It指代：it可以指代主语从句和不定式：it is important that we finishe on time. It is difficult to do this research.

It不能指代介词短语，DE中的介词短语是from the release / after the time

现在完成时：for, since, so far, ever, never, just, yet, till, untill, up to now, in past years…..

问题：分词短语在句首逻辑主语等于句子主语，这里的逻辑主语是什么意思？难道会有逻辑主语不等于句子主语的情况？

35 years前面是否不能加the？

选A

简单说说你的问题，分词短语在句首的时候逻辑主语=句子主语，这句话本身是没错的

问题时Less than 35 years after ...这个结构并不是分词短语在句首的情况（A选项）

这个结构就好像是 3 years ago，4 days after I left，这样的结构一样，实际上仅仅是一个时间状语，这样的时间状语本身是不需要逻辑主语的

另外对于那个定冠词the能不能加的问题，我的理解是在这里一定是不能加的

再不加的时候35 years描述的主要意思是35年时间，是一个时间长短的概念，所以可以用less去比

但是加上the之后 the 35 years描述的就是那特定的35年了，是一个时间段，这里再用less去比就显得很奇怪

举个例子，fewer than 500 people，那就是少于500个人的 但是 fewer than the 500 people，这时候那500个人就已经是一个特定的概念了，实际上是不能去fewer的

希望上面的解释能够帮到你

以下是引用大熊熊小蜜蜂在2009-11-17 12:52:00的发言：

明白了  james老师真好      比数钱还开心  哈哈

。。。。。。。。。。。比数钱还开心呐。。。。。。。。