问题描述：
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?
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?
问题解答：
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