by doing sth 作方式状语的表达与应用

越详细越好噢，我先谢谢您的回答了! 只要答的好，我会给您追加分数的。

by doing sth 作方式状语的表达与应用 make a living (by) doing sth这里有by是不是doing sth是充当介宾没by充当定语后置? doing sth have sth doing用法?? 哪些动词+doing sth see sb doing sth see sb doing sth? find sth doing forget to doing sth adj+doing sth?