关于to do 的逻辑主语 - 柯帕斯英语网

3 关于to do 的逻辑主语

我看到了几种说法：

1. To do…, svo. 句型中的 Inf的逻辑主语与句子主语可一致也可不一致：

例如：To made stereo effects, two recordings are made the some performances. √

2.不定式放句首时，逻辑主语与句子主语要一致。

To save money, he has tried every means. √

To save money, every means has been tried. ×

上述两种说法矛盾。不知道真实的情况是如何呢？

另外：Therefore to increase the yield of the targeted reaction products, many factors are taken into consideration.这句话语法对不对呢？

0 条评论
分类：不定式

最佳答案 2022-03-30 15:38

你的问题句属于出现垂悬修饰语（dangling modifiers)的错误。根据语法规则，主句主语应该和修饰语中的主语一致才正确。根据《牛津英语语法指南》第四版115（4）词条的解释，对于垂悬修饰语，目前已经接受的是主句为形式主语或there be结构，或垂悬部分为习惯用语的情形，请看该书例句：

1. Being French, it's surprising that she's such a terrible cook.

2. Having so little time, there was not much that I could do.

3. Considering everything it wasn't a bad year.

以上用法都是正确的。

你的句子属于不定式结构，属于尚未认可的用法。国外一些网站的语法教学页面也有讲解，如：

http://www.biomedicaleditor.com/grammar-tip-dangling.html

Example

To investigate the relationship, a series of experiments were designed. （Incorrect)

(Who is going to investigate? Implied subject = we/researchers; grammatical subject = a series)

Correction：

We designed a series of experiments to investigate the relationship.

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