His concern is with technique and tools.中的with是什么用法?去掉后 is 变成are不行吗?

分类: 作业答案 • 2022-02-01 00:19:32

问题描述：

答

His concern is with technique and tools.中的with是:与...有关
concer作名词时是一种抽象概念：关心的事物,不能去掉with,is 变成are