看一个句型结构
问题描述：
看一个句型结构
But we are much less conscious of the extent to which work provides psychological well-being
which是指 extent?provides sth.to a certain extent 有着用法么 请列举
答
which是指 extent? 对
provides sth. to a certain extent 有着用法么
provide somebody with sth
provide sth for sb. 我只知道这两种用法