Question

一个英语句子不懂，高手进来求解答。It was so kind of you to make my

一个英语句子不懂，高手进来求解答。It was so kind of you to make my stay there such a happy and lucky experience.其中的to的用法是什么？怎么用啊？先谢谢了。

Answer 1

It's +adj.+for sb. to do sth.这里的形容词是形容sth.（物）Eg:It's easy to make it. easy形容 make it.
It's +adj.+of sb. to do sth.这里的形容词形容sb.(人) Eg:It's kind of you to lend me your pen. kind 形容you
形容词到底形容人还是物，关键取决于of（用修饰人的） 还是for（用修饰物的） 英语里面有些形容词只能形容人，而有些就只能形容物。

Answer 2

it is 加上形容词 of /for sb to do something 是个句型，表示 某人做某事是值得 如何如何的。

it是句子的形式主语，真正的主语是to make my stay there such a happy.

例句： it was so difficult for me to solve the problem alone. 我一人解决此问题有点困难

Answer 3

形式主语。为了避免头重脚轻，把To和后面的放后面去了。原句是：to make my stay there such a happy and lucky experience was so kind of you

Answer 4

动词不定式做主语，it是形式主语