新人教选修七 UnitRobotsGrammar.pptx
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1、To be,or not to be-that is the question.Hamlet 第1页/共36页1.Obviously,to be obeyed was natural to Jim.2.My brother appeared to be satisfied with the final result of the basketball match.3.It needs not to be said that they are very happy together.4.Joan is a girl easily to be frightened by dogs.第2页/共36页
2、5.At that moment,I had to shout loudly to be heard by everyone.6.The posters were ordered to be printed immediately.7.The manager ordered the posters to be printed immediately.8.Look,they are waiting for the door to be opened.9.Make sure that you know what is to be done.第3页/共36页不定式语法 不定式的时态和语态不定式有时态
3、和语态的变化,时态共四种,即一般式、完成式、进行式和完成进行式。语态分为主动语态和被动语态,如下表所示。不定式被动式讲与练不定式被动式讲与练第4页/共36页语态语态 时态时态主动语态主动语态被动语态被动语态一般式一般式 to do to be done完成式完成式 to have done to have been done进行式进行式 to be doing/完成进行式完成进行式 to have been doing/第5页/共36页当动词不定式的逻辑主语是动词不定式所表示的动作的执行者时用主动语态;当动词不定式的逻辑主语是动词不定式所表示的动作的承受者时用被动语态。进行式和完成进行式没有被
4、动语态。第6页/共36页1 现在时:一般现在时表示的动词,有时与谓语动词表示的动作同时 发生,有时发生在谓语动词的动 作之后。He seems to know this.I hope to see you again.=I hope that Ill see you again.第7页/共36页 2 完成时:表示的动作发生在谓语动 词表示的动作之前。Im sorry to have given you so much trouble.He seems to have caught a cold.3 进行时:强调动作已在延续或动作 正在进行。They seem to be getting alo
5、ng well with their new jobs.He seems to be eating something.第8页/共36页4 完成进行时:表示动作是在谓语动 词所表示的动作之前就一直在进行。They are said to have been collecting stamps for over twenty years.He appears to have been waiting a long time.第9页/共36页不定式的被动形式有下列用法:(1)作主语 It is an honour for me to be asked to speak here.(2)作宾语 Sh
6、e asked to be sent to work in Xinjiang.一 当不定式的逻辑主语是不定式所表示的动作的承受者时,不定式一般要采用被动形式。第10页/共36页(3)构成复合宾语 He wanted the letter to be typed at once.She didnt like herself to be praised like that.(4)构成复合谓语 The books are not allowed to be taken out of the room.第11页/共36页(5)作定语Are you going to the meeting to be
7、heldin the teachers office?(6)作状语She was too young to be assigned suchwork.第12页/共36页二、不定式有时还可以有完成式的被动式,在句中作主语、宾语、定语,或者构成复合宾语、复合谓语等,如:It is a good thing for him to have beencriticized.(主语主语)She preferred to have been given heavier work to do.(宾语宾语)第13页/共36页He thought it an honour to have beeninvited
8、to the party.(复合宾语复合宾语)The book is said to have been translatedinto many languages.(复合谓语复合谓语)She was the first woman to have been elected to such a post.(定语定语)第14页/共36页三、不定式的主动形式表示被动1.在there be结构中。例如:There is a lot of homework to do(也可用to be done)There is no time to lose(to be lost).第15页/共36页2.在“npr
9、on+be+adj+to do”结构中。常用的形容词有easy,difficult,hard,impossible,nice,pleasant,light,heavy,interesting,important,expensive,cheap,fit,dangerous等。例如:He is hard to convince.He is an impossible person to work with第16页/共36页3.在“tooto do;enoughto”结构中。如:The problem is too difficult to work out(to be worked out)The
10、 house is big enough to live in.4.在“with+n+to do”结构中。例如:With nothing to do,he lay in bedWith so many exercises to do,I cant go to the cinema第17页/共36页5.当不定式的逻辑主语在句中出现时。例如:I have a letter to type today Do you have anything to say?(I是to type的逻辑主语)(you是to say的逻辑主语)第18页/共36页6.当不定式隐含在for sb to do结构中时。This
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