不定式语法→①不定式构成谓语 )不定式和某些形容词构成谓语 Madame is sure to be right He is certain to return 5)不定式和某些被动结构构成复合谓语 He is said to have been in China many times This was thought to be impossible 2021/2/22
2021/2/22 6 不定式语法→ 不定式构成谓语 4)不定式和某些形容词构成谓语 Madame is sure to be right. He is certain to return. 5)不定式和某些被动结构构成复合谓语 He is said to have been in China many times. This was thought to be impossible. 1
不定式语法→●目录 构成谓语 不定式的 时态和语态 作主语 不定式的 疑问式 作宾语 不定式 不定式的 否定形式 作定语 不定式的 逻辑主语 作状语 作表语 2021/2/22
2021/2/22 7 不定式语法→ 目录 不定式的 时态和语态 不定式的 疑问式 不定式的 否定形式 不定式的 逻辑主语 作表语 作状语 作定语 作宾语 作主语 构成谓语 不定式
不定式语法→②不定式作主语 不定式可以作主语,不定式作主语谓语用 单数: To compromise appears advisable To stop the work now seems impossible 但在更多情况下都用“it”作先行主语,而把不 定式这个真正的主语放到句子后面去,这样可使主 语不至显得太长,避免头重脚轻的现象,常见的这 类句子有以下几种: 2021/2/22
2021/2/22 8 不定式语法→ 不定式作主语 不定式可以作主语，不定式作主语谓语用 单数： To compromise appears advisable. To stop the work now seems impossible. 但在更多情况下都用“it”作先行主语, 而把不 定式这个真正的主语放到句子后面去, 这样可使主 语不至显得太长, 避免头重脚轻的现象, 常见的这 类句子有以下几种： 2
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 2021/2/22
2021/2/22 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
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 2021/2/22
2021/2/22 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