[求助]-ing啊-ing，OG12-65

missouyangs

OG12-65
In a plan to stop the erosion of East Coast beaches,the Army Crops of Engineers proposed building parrel to shore a breakwater of rocks that would rise six feet above the waterline and act as a buffer,so that it absorbs the energy of crashing waves and protecting the beaches.
a.act as a buffer,so that it absorbs
b.act like a buffer so as to absorb
c.act as a buffer,absorbing
d.acting as a buffer,absorbing
e acting like a buffer,absorb
这个题选C没有问题。。。但是有点不明白啊。。。。
如果不看后面的protecting平行结构。。。
absorbing的逻辑主语等于句子主语。。那会不会指代到主句上的主语，产生混淆呢？
分词的用法好不明白啊。。。。
有童鞋可以帮忙解答吗。。。谢谢啊。。。。

missouyangs

明白了！谢谢大家！

linglingdan

同意楼上的说法，认为absorbing是表示结果的！！

bigbigboy

absorbing作为伴随结果,不是伴随动作,不需要考虑逻辑主语(白勇语法)