题目内容
4．It's very nice _____you_____so．（ ）| A． | of，to say | B． | for，to say | C． | of，saying | D． | for，says |
分析 你这么说真是太好了．
解答 答案：A．考查介词．句意"你这么说真是太好了．"．it's+形容词+of sb to do sth某人做某事是…it's+形容词+for sb to do sth对某人来说做某事是…形容词能够修饰sb时用of．这里nice好的，指人物的品质，可以修饰you，构成主系表结构，因此第一个空用of．第二个空，it是形式主语，真正主语是不定式，因此用to say．答案是A．
点评 考查介词用法，这个知识点很广泛，有一些口诀，还有一些固定用法，需要日常积累，结合语境选择正确介词完成习题．
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