分词和不定式的区别/大全413

1.                         In the mid-1920’s the Hawthorne Works of the Western Electric Company was the scene of an intensive series of experiments that would investigate changes in working conditions as to their effects on workers’ performance.

(A) that would investigate changes in working conditions as to their effects on workers’ performance

(B) investigating the effects that changes in working conditions would have on workers’ performance

(C) for investigating what are the effects in workers’ performance that changes in working conditions would cause

(D) that investigated changes in working conditions’ effects on workers’ performance

(E) to investigate what the effects changes in working conditions would have on workers’ performance

（B）

1.E中除了what the effects 与B不同外有什么区别，主要想问分词和infinitive的区别

再看一题：

1.                         Since chromosome damage may be caused by viral infections, medical x-rays, and exposure to sunlight, it is important that the chromosomes of a population to be tested for chemically induced damage be compared with those of a control population.

(A) to be tested for chemically induced damage be compared with

(B) being tested for damage induced chemically are compared with

(C) being tested for chemically induced damage should be compared to

(D) being tested for chemically induced damage are to be compared to

(E) that is to be tested for chemically induced damage are to be comparable with

（A）可以从it is important that 看出要用be compared with，

2.若B改成being tested for damage induced chemically be compared with对吗？

3.这里induced chemically 放在前面和后面意思有什么改变吗？

小雪MM. 不定式表示目的, 一次性动作(自认为太绝对); 分词可以当伴随状语, 和起定语从句的作用(强调重复性动作, 自认为不要作为判断选项的依据)fficeffice" />

本题的关键还是在于对句子意思的理解:

B的中文意思是: 研究一种效果, 那就是工作条件的变化对工人表现的影响.

E的中文意思是: 研究工作条件变化的效果对工人表现的影响.

这里的效果是条件变化对工人表现, 而不是条件变化的效果.