现在分词

A participle expressing present action; in ''.

表达现在动作的分词；在英语中通过加-ing构成。

That the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade, or that the provision of pot cacti for lonely settlers' wives would have led to Eastern Australia being overrun with forests of Prickly Pear?

呵呵，我也搞不清到底是分词还是动名词，亦或是现在的语法书中是否区别。简便起见，就用to do或doing来说吧，前面用的to do比较令我困惑，如果我用，肯定直接用blocked，因为我感觉to be blocked有将来的意味（不是说这个动作和throwing away相比是将来吧，这个弯绕得太大了……），而后面一处却用了表示正在进行的being，不论出于哪种想法，在作者写作当时，这两个案例的情况都是类似的啊，用什么用不同形式的补足语呢？

The production of tin ore in the United States is relatively insignificant, less than one hundred tons annually.

如果-ING分词表示的是一般性动作，(即不指明是现在、过去或将来)不表示动作的先后或与谓语所表示的动作同时或几乎同时发生，这时要用-ING的一般形式

The Present Perfect Tense is formed by combining an auxiliary verb with a past participle.

现在完成时态的形成方式是把助动词和过去分词结合起来。

There are two types of participle in English: the past participle and the present participle.

掌握现在完成时态以及不规则动词的过去时态和过去分词。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。