英语中的不定词是由“to”加上动词原形构成的,可以作为名词、形容词或副词使用。例如,它可以作为句子的主语、宾语、表语或同位语,也可以修饰名词或代词,或者作为副词修饰动词、形容词或副词。不定词在英语中的使用非常广泛,是英语学习的基础知识。
作为名词使用
不定词可以作为句子的主语、宾语、表语或同位语。例如:
- To speak English fluently is my goal. (作为主语)
- I want to learn English. (作为宾语)
- My dream is to travel around the world. (作为表语)
- His suggestion, to take a break, was a good idea. (作为同位语)
作为形容词使用
不定词可以修饰名词或代词,作为形容词使用。例如:
- I have a lot of work to do. (修饰名词)
- He is too busy to help us. (修饰代词)
作为副词使用
不定词可以作为副词修饰动词、形容词或副词。例如:
- She smiled to show her happiness. (修饰动词)
- The movie was too scary to watch. (修饰形容词)
- He ran fast to catch the train. (修饰副词)