书名：新制多益狠准五回
版本：3/e
页数：p.18 第104题
题目：
The interior decorator had some convincing to do before Ms. Fields agreed that his new layout was more suitable for her living room.
疑问：为什么可以用形容词some来修饰动名词convincing？
之前看国学一题解析说形容词不能拿来修饰动名词，查了一下google也说要用副词修饰，是我的理解有错误吗