不定式语法→②不定式作主语 1)tbe形容词+不定式 It is hard to say which is be It's foolish to act like that 2t+be名词+不定式 It's an honour to meet you It's our duty to obey the law 2021/2/222021/2/22 9 不定式语法→ 不定式作主语 1)It+be+形容词+不定式 It is hard to say which is better. It’s foolish to act like that. 2)It+be+名词+不定式 It’s an honour to meet you. It’s our duty to obey the law. 2