There is much that we can learn from him today.that引导的是不是同位语从句?

There is much that we can learn from him today.that引导的是不是同位语从句?
There is much that we can learn from him today.
that引导的是不是同位语从句?

There is much that we can learn from him today.that引导的是不是同位语从句?
这是定语从句,关系代词是that,先行词是much.

不是