第一道题可以解释为
On the west beach of the lake stands an old tower which was built about a hundred years ago.
这样你就可以看到a hundred years ago 所对应的过去动作了was built.要注意区分非谓语动词修饰的中心词.
第二道题只有一个谓语动词,所以时间状语10 years ago 就是用来修饰这个唯一的动词了.
第一道题可以解释为
On the west beach of the lake stands an old tower which was built about a hundred years ago.
这样你就可以看到a hundred years ago 所对应的过去动作了was built.要注意区分非谓语动词修饰的中心词.
第二道题只有一个谓语动词,所以时间状语10 years ago 就是用来修饰这个唯一的动词了.