Unit 2 Grammar and usage 2 ppt课件 --（2020版）新牛津译林版高中英语必修第三册.pptx

1、To-infinitives不定式是动词的一种非限定形式,由“to+动词原形动词原形”构成，没有人称和数的变化，在句中不能独立作谓语。The bridge_(come)to use this end of year leads to Huayang Lake.谓语是在句子中自带时态和语态的动词。谓语是在句子中自带时态和语态的动词。All functions of to-infinitives1.Subjects 1)To see is to believe.2)To improve your oral english is your present task.2.Objects 1)They

2、agreed to hand in improved model tomorrow.2)The charity hopes to help all the people in need.All functions of to-infinitives3.Attributives 1)We have made environmental policies for business to observe.2)Ordinary people have a lot of things to cope with everyday.4.Object complements 1)The government

3、encourages us to protect the environment.2)Everybody was asked to perfect his or her writing skills.All functions of to-infinitives5.Predicatives 1)My job today is to take care of my little sister.2)Their method seemed to be more practical.6.Adverbials of purpose 1)Then as a class,out all the parts

4、together to make a booklet.2)Some people hunt animals for fashion:animal skin is usedto make coats and bags.All functions of to-infinitives7.Adverbials of result 1)I ran all the way to school,only to be told that it was Sunday.2)They tried their best to rescue the missing people,only to find their d

5、ead bodies.8.Adverbials of reason 1)I was delighted to know the result of the interview.2)The students were excited to know that they would have two days off.动词不定式作定语的四种情况To-infinitives as attributives 1.当修饰的词是一些抽象名词，例如ability,ambition,attempt,chance,courage,desire,decision,effort,failure,moment,pro

6、mise,right,time,wish（一些表示企图、努力、愿望、打算、能力等意义的名词）2.当修饰的名词前有the only,the next,the best,the first,the last,以及由序数词或形容词最高级修饰的名词常常用不定式作定语。动词不定式作定语的四种情况To-infinitives as attributives 3.当修饰的词为something,nothing,anything 等不定代词时。4.当定语表示未来的还没做的动作时。动词不定式作定语的三种关系To-infinitives as attributives 1.We must find a perso

7、n to do the work.2.There are lots of interesting things to see.3.The medical teams got the order to leave Wuhan when the epidemic was contained.主谓关系主谓关系 sb do sb do动宾关系动宾关系 do sth do sth同位关系同位关系动词不定式作定语的位置与关系动词不定式作定语的位置与关系1.1.通常放在名词、代词或不定代词的后面作通常放在名词、代词或不定代词的后面作后置定语后置定语2.2.与所修饰的名词构成与所修饰的名词构成主谓关系、动宾关

8、系、同位关系主谓关系、动宾关系、同位关系动词不定式作结果状语To-infinitives as adverbials of result1.动词不定式表示结果时，其逻辑主语就是句子的主语。结果状语常常只限于learn,find,see,hear,to be told,make,turn out to be等具有界限含义的动词。2.不定式常与only,enough或too连用，用于“too.to”，“enough to.”，“only to do”句型中。表示出乎意料的结果To-infinitives as attributivesTo-infinitives as adverbials of

9、resultI was staying in Atlanta,and that was one of the cities to be hit.That morning,I turned on the TV for some local news,only to hear that a hurricane was on its way.Read the passage about an interview and complete the tasks(P20)Find the sentences with to-infinitivesI looked out of the window,onl

10、y to see huge trees lying across the street and water everywhere.There was nothing for me to do.I had enough food and water to last a whole week.When the to-infintive is used as an,it is often put (before/after)the noun or pronoun it modifies.When the to-infintive is used as an,it can refer to an _(

11、expected/unexpected)result.In this case,we often use only before the to-infinitive.afterunexpectedWorking out the rulesFinish exercises C on P64 cebdacd;aeab Read the passage about an interview and complete the tasks(P20)Please complete the exercises on Page 21B1ecdbaB2to find books about hurricanes in the school libraryto find he wasnt in to attendto make PPT slides for my projectB3was actually the first to leaveto keep us warmwanted to return home as soon as possibleonly to find it completely destroyedadvised us to take an active part in the rebuilding