1，he rejected my arguement by arguing that my decision was too arbitrary
这个句子by的用法是什么，为什么要用by
2，the products possess classic apearance,besides,they are of high quanlity这句话的are后为什么要用of,of在这里是什么意思
3，the power to encourage the kids to purse their dreams 这句话power后面的to是什么意思，为什么要用to
4,being dedicated into writting his new book,he rarely gose to bed berfore 2am。这里为什么要用being dedicated,有什么语法要求吗？
多谢大家解答
这个句子by的用法是什么，为什么要用by
2，the products possess classic apearance,besides,they are of high quanlity这句话的are后为什么要用of,of在这里是什么意思
3，the power to encourage the kids to purse their dreams 这句话power后面的to是什么意思，为什么要用to
4,being dedicated into writting his new book,he rarely gose to bed berfore 2am。这里为什么要用being dedicated,有什么语法要求吗？
多谢大家解答
