不定式语法→②不定式作主语 3)t动词(宾语)+不定式 It cost a lot of money to build this museum It requires patience to be a teach It took me two hours to find your ne 4)tbe+介词短语+不定式 It's against my principles to collaborate with them It's not within my power to change his vien 2021/2/222021/2/22 10 不定式语法→ 不定式作主语 3)It+动词（宾语）+不定式 It cost a lot of money to build this museum. It requires patience to be a teacher. It took me two hours to find your new house. 4)It+ be +介词短语+不定式 It’s against my principles to collaborate(合作) with them. It’s not within my power to change his view. 2