1.4 Grammar-2019-2020学年下学期高二英语同步精品课堂（人教版Book7）(共20张PPT)

不定式是动词的一种非限定形式,由 “to+动词原形” 构成，没有人称和 数的变化，在句中不能独立作谓语。 但不定式具有名词、形容词和副词的特 征，在句中可以作主语、宾语、宾语 补足语、表语、定语、状语等。 Grammar: the Infinitive * * 1. It is good to help others. 2. It is my ambition to make sure that the disabled people in our neighborhood have access to all public buildings. 3. My ambition is to work in the computer industry when I grow up. 辨别下面不定式在句子中充当的成分: subject subject Predicative (表语) * * 4. I don’t have time to sit around feeling sorry for myself. 5. I am the only student in my class to have a pet snake. 6. A big company has decided to buy it from me. 7. My fellow students have begun to accept me for who I am. attribute attribute object object * * 8. I have had to work hard to live a normal life. 9. Some days I am too tired to get out of bed. 10. We must call on local government to give financial assistance to disabled people. Adverbial (状语) adverbial object complement * * 一. 不定式在句中的功能 1. 作主语: 那样做是很幼稚的. To act like