题目

they write letters to their favorites,giving
they write letters to their favorites,giving them advice and offering their own opinions,and sometimes copy them.
为什么不写成giving them advice ,offering their own opinions,and sometimes copying them.
分词giving them advice and offering their own opinions在这里的作用?

提问时间：2020-08-02

答案

1 giving them advice and offering their own opinions都是write letters to their favorites的下级结构,这2个是平行的,而sometimes copy them看清楚,用的是copy用的是动词原形,说明这个copy是和write letters一个层级上的结构,所以前面也要加上and
2 在这里指的是写信写了什么,分词结构做补语,补充说明写信给他们做什么
（你问这个问题,说明你水平很不错,不知道我用了些语言学上的术语你能理解吗）