这两个动词不定式在句子中做什么成分
问题描述：
这两个动词不定式在句子中做什么成分
This was even more exciting to see than the rapids where the water seemed to boil.
请问动词不定式to see和to boil在句中做什么成分?
答
to see作后置定语,与前面的主语this构成逻辑上的动宾关系.
to boil与前面的seemed共同构成谓语部分,不可分割,seem是不及物动词,只能用seem to do