□To 부정사

- 동사 앞에 to 붙여서 더 이상 동사로 사용하지 않음. 하지만 동사의 성격은 그대로 가짐

1. 명사적용법

① To eat vegetables is good for your health

cf> It is good for your health to eat vegetables

It is impossible to finish the work in time

② I decided to turn down the job offer from the company

cf> Some people find it difficult to work for others

③ His duty is to see that the business runs well

④ My friend advises me to buy a new computer

□의문사 + to 부정사 도 명사역활

①I don't know what to do

②Where to go wasn't decided

2. 형용사적 용법

① I want to have the ability to speak English well

② We are to meet at the station this evening(예정)

③ You are to report this to the police(의무)

④ The sailor was never to see his family again(운명)

⑤ He is not to be trusted(가능)

⑥ If you are to solve this matter, you should be active(의도)

⑦ You seem to know a lot about psychology

□ seem to , appear to, prove to, turn out to, happen to

3. 부사적 용법

① This problem is too hard to solve.

② He is rich enough to afford a new house

③ I got up early to be in time for the first train

④ I was disappointed to hear the news

⑤ She must be a fool to give up the opportunity

⑥ Her son grew up to be the greatest philosopher

4. 의미상의 주어- to 부정사의 의미상의 주어는 일반적으로 For 목적격 또는 경우에 따라 of 목적격으로 온다

① This book is a little difficult for me to understand

② It is nice of you to say so.

5. 시제의 차이

①It seems that he is ill

□ He seems to be ill

② It seems that he was ill

□ He seems to have been ill

③There appears to have been an accident

④I hoped to have visited Italy

□동명사

동사에 +ing 를 붙여 더 이상 동사로 사용하지 않음. 명사로만 사용함. To 부정사의 명사적 용법과 똑같음. 단, 의미상의 주어만 소유격(목적격)으로 옴

① Painting houses is an interesting job.

② I have enjoyed walking with you

③ My part-time job is taking care of babies

④ I'm not interested in talking about him

⑤ I appreciate your(you) saying so.

⑥ I'm proud of my father being a professor.

⑥ I'm proud of my father having been a professor.

⑦ I'm worried about her having gone abroad

□ I'm worried that she went abroad

□ Some people find working for others difficult.( to 부정사와의 차이점)