Doctor：Are you OK, Ron? You don’t look well.
Ron：Hi, doctor, I have a sore throat. It’s hard for me to talk too much now.
Doctor：I see. Open your mouth, please.
Ron：Ah...
Doctor：Well, there’s something wrong with your tonsil(扁桃體) but it’s not very serious. Take this medicine three times a day. It’s good for you to drink hot water time to time.
Ron：OK.
Doctor：Relax, Ron. Don’t eat spicy food these days and you’ll be better soon.
Ron：Thanks, doctor, it’s nice of you to say so.
Molly：Kathy, I often feel sleepy recently.
Teacher：Molly, it’s good for you to sleep early at night. Don’t worry, you’ll be all right.
Molly：Thank you, it’s very kind for you to say that.
Teacher：Molly,你這句話使用的不太對哦!
Molly：哪裡不對呢？
Teacher：這就是我們今天要學習的It's+adj.+for/of sb.to do sth.的用法。
（It's+adj.+for/of sb.to do sth.的用法）
在It's + adj. + for sb.to do sth.這個句型中，形容詞(adj.)常用於表示事物（to do sth.）的特點，如useful，hard，difficult，interesting，important。
例如：
It’s very hard for him to study two languages.
對他來說學兩門外語是很難的。
在這句話中hard是用來修飾to study two languages這件事情，所以用介詞for。
而在It's + adj. + of sb. to do sth.這個句型中，形容詞(adj.)一般用來表示人物（sb.）的某種性格和品德，或表示主觀感情或態度，如good，kind，nice，clever，foolish，right。
Molly：我知道啦！所以剛剛那句話我應該說：
It’s very kind of you to say that.
你說那樣的話，你真是太好了。
在這句話中，kind修飾的是you，所以用介詞of。
Teacher：Yes，Molly，你能用這兩個句型再舉兩個例子嗎？
Molly：OK.
It’s easy for me to do the homework.
對我來說家庭作業太簡單了。
It’s clever of you to work out the maths problem.
能做出這道數學題，你真是太聰明瞭。
Teacher：Excellent！Cease to struggle and you cease to live.生命不止，奮鬥不息。
同學們要保持努力奮鬥的好習慣哦！
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