Unit3 Discovering Useful Structures(ppt课件) -2022新人教版（2019）《高中英语》必修第三册.pptx

1、KevinMay.20221.省略主语(You)shut up.Sounds like a good idea.(It)sounds like a good idea.Shut up.Open the window.Thank you for your help.Doesnt matter.Beg your pardon.(You)(I)(It)(I)2、省略主谓或主谓语的一部分 (1)See you tomorrow.(2)Glad to meet you!(3)Nice to meet you!(4)What about a beer?(5)Anything wrong?(Ill)(Im)

2、(Its)What(do you think)about a beer?(Is there)3、省略表语(1)Are you thirsty?-Yes,I am(2)He is smart.So is his sister -Have you finished your work?-Not yet.(I have)Not(finished my work)yet.4、同时省略几个成分(thirsty)(smart)并列句中，后一个分句常省略与前一分句中相同的部分。(1)His father is a doctor and his mother is a nurse.(2)I study at

3、college but my sister doesnt study at college.(3)In summer,the day is getting longer,and the night is getting shorter.His father is a doctor and his mother a nurse.I study at college but my sister doesnt.In summer,the day is getting longer,and the night shorter.1.not/so 常用来替代从句。Do you think he will

4、attend the meeting?I guess not.注意：so常用于替代_形式的从句，而not常用来替代_形式的从句。常见的动词有：think/believe/suppose/expect/imagine/guess/hope/fear；say/speak/do；Im afraid 等。so 也可用于疑问表达的省略，如：(1)Is he coming back tonight?-I think so.(2)She must be busy now.-If so,she cant go with us.(3)Is she feeling better?-Im afraid not.肯定

5、否定2.主句部分的省略现象。I think(that)it will clear up this afternoon and that they will come to say goodbye to us.3.宾语从句中常省略连词that，但从第二个并列的宾从开始that均不能省略。4.定语从句中,that/which/whom/who在从句中作宾语时可省略.(介词+关系代词引导定从时，关系代词不可省略)Here is the man(whom/that/who)youve been looking for.（1 1）当主、从句的当主、从句的主语主语一致一致,从句的谓语动词为从句的谓语动词为

6、be的某种的某种形式时形式时,可省去从句中可省去从句中主语主语+be部分部分5.状语从句中的省略（2 2）当从句中的主语为当从句中的主语为it且谓语动词为且谓语动词为bebe的某种形式时的某种形式时,可可省去省去it+be部分部分(1)When(he was)still a boy of 10,he had to work day and night.(2)She tried her best though(she was)rather poor in health.(3)If(you are)asked,you may come in.(4)If(it is)necessary,Ill ex

7、plain to you again.More examples:Because he was late,he was punished by the teacher.Because of being late,he was punished by the teacher.1.1.作作宾语宾语的不定式短语，省略时的不定式短语，省略时只保留只保留to，但如但如不定式不定式to后是后是be或完成式或完成式，则须，则须保留保留be/have:(1)Will you come to the party this evening?-Id like to.(2)He didnt give me the c

8、hance,though he had promised to.(3)Are you an engineer?-No,but I want(4)He hasnt finished the task yet.-Well,he oughtto be(give me the chance).to have(come to the party this evening).2.2.不定式符号不定式符号toto的其他省略情形的其他省略情形(1)并列的不定式可省去后面的并列的不定式可省去后面的 to.I told him to sit down and wait for a moment.(2)help 后

9、面的后面的宾语宾语或或宾补宾补的不定式的不定式to可可带带可不可不带带.I will help(to)do it for you.I will help you(to)do it.3 3、前有前有do,do,后无后无toto；前无；前无dodo，后有，后有toto The boy did nothing but play.The mother could do nothing but wait for the doctor to come.He had no choice but to wait.All we can do now is(to)wait.The only thing you h

10、ave to do is(to)press the button.4 4、使役动词及感官动词后面作、使役动词及感官动词后面作宾语补足语宾语补足语的不定式一的不定式一定要省去定要省去to,to,但在但在被动语态被动语态中须将中须将toto复原。复原。连词连词if在部分虚拟条件句中可省略在部分虚拟条件句中可省略，省略后从句，省略后从句部分倒装部分倒装(1)Had they had time,they would certainly have come and helped us.(2)Were I you,I would do the work better.(3)Should there be

11、a flood,what should we do?一些与动词、名词或形容词搭配的介词常常可以省略。一些与动词、名词或形容词搭配的介词常常可以省略。常见的结构有常见的结构有:have difficulty/trouble(in)doing sth.be busy(in)doing sth.spend some time(in)doing sth.stop/prevent sb.(from)doing sth.There is no sense/point(in)doing sth.找出下列句子中可以省略的部分找出下列句子中可以省略的部分1.The burn that she got from

12、the iron was red and it was very painful.2.A boy was on the left side of the sick woman,and a girl was on the right side of the sick woman.3.She has a daughter who is in hospital.4.He went to the doctor because he had to go to the doctor.5.She could not decide whether to send him to hospital or not

13、to send him to hospital.找出下列句子中可以省略的部分找出下列句子中可以省略的部分6.The temple which is surrounded by walls belongs to the local government.7.The first book that I read this term was more interesting than the second book that I read this term.8.To her teachers surprise,she did better in her first aid exam than sh

14、e was expected to do.找出下列句子中可以省略的部分找出下列句子中可以省略的部分9.I dont think they have returned from the hospital,but they might have returned from the hospital.10.He wanted to help the accident victim but his friend didnt want to help the accident victim.11.You can borrow my first aid notes if you want to borro

15、w my first aid notes.1.他说英语比你说的流利。他说英语比你说的流利。2.多读、多练对我们来说是十分必要的。多读、多练对我们来说是十分必要的。3.你不应该去他的聚会，除非你被邀请。你不应该去他的聚会，除非你被邀请。4.横穿街道的时候要当心车辆。横穿街道的时候要当心车辆。He speaks English more fluently than you do.It is quite necessary for us to read and practice more.You shouldnt go to his party unless invited.Look out for cars when crossing the street.课堂小结 2: