Question

9．他真是太好了能提供给我们一些有价值的建议．
It is niceof him to offer us some valuable advice．

Answer 1

分析 of him to offer us some valuable advice．

解答 答案：of him to offer us some valuable advice．表示某人做某事太怎样了结合It is nice用法it's+adj+of sb to do sth，提供某人某物offer sb sth，故offer us some valuable advice，故答案是of him to offer us some valuable advice．

点评 It's adj of sb to do sth 中adj 是针对事件，修饰sb
It's adj for sb to do sth 中adj 是针对sb，修饰事件
用of常用于描述人的性质 友好、可恨、善良等．
用for常用于描述事情的性质 容易、重要、关键 
例如：It"s very nice （kind，friendly） of you to help me carry the baggage．
你真友好，帮我搬了行李．
It"s very important for you to solve the problems．
解答出那些难题对于你来说非常主要．