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①It is + adj + for sb to do sth ②It is + adj + of sb to do s

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①It is + adj + for sb to do sth ②It is + adj + of sb to do sth 用这两种各造一个句子
①It is + adj + for sb to do sth ②It is + adj + of sb to do s
在It is + adj.+ for/of sb to do sth.这样的句子中,由于表语形容词性质的不同,导致了不定式逻辑主语标志用for或of的区别.
for sb.句型中的形容词一般为表示客观形式的形容词,如easy,hard,difficult,interesting,impossible,important,necessary等.例如:
It's very hard for him to study two languages.对他来说学两门外语是很难的.
of sb句型中的形容词一般为表示性格,品德,心智能力,表示主观感情或态度的形容词,如good,kind,nice,clever,foolish,right,wise,polite,careless stupid ,careless ,considerate ,rude ,naughty ,impolite等.例如:
It's very nice of you to help me.你来帮助我,你真是太好了.