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Unit 4 Using language 1 (ppt课件)-2022新外研版(2019)《高中英语》选择性必修第三册.pptx

1、Using language Unit 4 A glimpse of the future目录contentsGrammarListening&speakingHomeworkVocabulary buildingIIIIIIIGrammarGrammar:Subject-verb agreementLook at the sentences from the reading passage and answer the questions.a.50 per cent of my time was spent researching new restaurants.b.Every recomm

2、endation she gives me is great.c.almost 50 per cent of US jobs are at risk from automation in the next 20 years.d.none of us is prepared for the challenges of AI.1.Why is 50 per cent singular in sentence(a)but plural in sentence(c)?2.What are the subjects in sentences(b)and(d)?Are they singular or p

3、lural?Grammar:Subject-verb agreementLook at the sentences from the reading passage and answer the questions.1.Why is 50 per cent singular in sentence(a)but plural in sentence(c)?Grammar:Subject-verb agreementLook at the sentences from the reading passage and answer the questions.Because in sentence(

4、a),the part“50 per cent”is followed by the uncountable noun“time”,while in sentence(c),the part“50 per cent”is followed by the countable noun“job”in its plural form.2.What are the subjects in sentences(b)and(d)?Are they singular or plural?In sentence(b),the part“Every recommendation”is the subject.G

5、rammar:Subject-verb agreementIn sentence(d),the part“none of us”is the subject.Both are singular.Now look for more sentences following this rule in the reading passage,and summarise the use of subject-verb agreement in your own words.One thing I think we all agree on,though,is that saying“My AI did

6、it!”wont be any excuse for illegal or immoral behaviour.Nearly every job is potentially at risk in the long run.Grammar:Subject-verb agreement主谓一致主谓一致是指主语和谓语在人称和数等方面的一致,当主语是不定代词或含有修饰语时,谓语动词的形式要依据主语所表达的单、复数概念而定,而不仅仅是取决于简单的外在形式。Grammar:Subject-verb agreement主谓一致用法归纳 1:当主语被分数(百分数)、表示量的词汇等修饰时,谓语动词的形式要依据

7、主语本身进行判断,具体如下:Grammar:Subject-verb agreementb)如果主语是可数名词复数,或主语加上修饰语后整体表达的是复数概念,那么谓语动词要用复数形式。a)如果主语本身是可数名词单数或者不可数名词,则谓语动词要用单数形式;主谓一致例1:About one-third of the books in the library are donated by students who graduated from the school.图书馆里大约三分之一的书都是由这所学校的毕业生捐赠的。Grammar:Subject-verb agreement解析:book 是可数名

8、词,在句中是复数形式,并且在句中着重于书的数量而不是将书视为整体,因此“三分之一的书”表达的意义是复数概念,谓语动词用 are。例2:Around 10 per cent of the forest is destroyed each year.每年大约有10%的森林被毁。主谓一致Grammar:Subject-verb agreement解析:本句中的 the forest 为可数名词的单数形式,泛指森林,因此“10%的森林”视作一个整体,谓语动词用 is。例3:A large number of people have applied for the job.许多人都申请了这份工作。Gra

9、mmar:Subject-verb agreement主谓一致解析:本句中的 people 为集体名词,表示复数概念,因此谓语动词用 have。Practice:1)Fifty percent of the students in our school _ girls.2)Three-fourths of the surface of the earth_ sea.3)Over sixty percent of the city _ destroyed in the war.Grammar:Subject-verb agreement主谓一致are iswasGrammar:Subject-v

10、erb agreement主谓一致解析:1)主语本身为可数名词复数 students,故用 are。2)主语为 surface“表面”,且句中“地球表面的四分之三”为整体概念,故用 is。3)主语为 city,在此为可数名词单数,故用 was。用法归纳 2:常用的表示“量”的短语后面接名词的谓语情况1)a number of/a variety of/varieties of+可数名词复数作主语时,谓语动词用复数形式。主谓一致Grammar:Subject-verb agreement2)a large amount of+不可数名词,谓语动词用单数;large amounts of+不可数名

11、词,谓语动词用复数。主谓一致Grammar:Subject-verb agreementA number of new houses have been built there.A variety of products are on sale now.A large amount of money was spent on the bridge.Large amounts of money were spent on the bridge.用法归纳 2:常用的表示“量”的短语后面接名词的谓语情况主谓一致用法归纳 3:当主语被不定代词修饰或主语本身是不定代词时,谓语动词的形式需要根据主语加上修

12、饰语后整体表达的意义来进行判断。Grammar:Subject-verb agreement主谓一致Grammar:Subject-verb agreement例如:Every means has been tried out without much result.所有方法都试过了,却没有什么效果。解析:means 是方法的意思,every means 强调每一种方法,故谓语动词用单数形式。主谓一致Grammar:Subject-verb agreementPractice:1)Each boy _ a prize.2)Many of us _ gone through regular tr

13、aining.3)Every possible approach _ been tried,but in vain.4)Both of the instruments _ not precise ones.5)Something _ going to happen,and nobody can stop it from happening.have has aregetsis主谓一致Grammar:Subject-verb agreement用法归纳 4:all 作主语表示人时,谓语动词用复数;表示物时,谓语动词用单数,例如:2)All are eager to reach an agreem

14、ent.大家都急于达成一项协议。1)All is well that ends well.结果好一切都好。主谓一致Grammar:Subject-verb agreement用法归纳 5:none 作主语时,谓语动词既可用单数也可用复数,这要取决于说话人的看法,如:1)None of us seem to have thought of it.似乎我们全都没有想到这一点。(此处强调全体,全部都没有想到。)主谓一致Grammar:Subject-verb agreement2)None of us has got a camera.(none=not a single one)我们都没有照相机。

15、(此处强调每一个个体,没有一个有照相机的。)主谓一致Grammar:Subject-verb agreement用法归纳 6:当主语被否定词修饰或主语本身是否定词时,谓语动词一般用单数形式。例如:例1:Nobody has got a ticket.(谁都没有票。)例2:Nothing was available.(没有可用的。)Complete the passage by choosing the singular or plural form.Grammar:Subject-verb agreementNowadays,some companies offer genetic testi

16、ng for childrens talents.A large number of clients have/has been attracted to it.They are parents,eager to know what talents their children may have in the future.The process is simple.Every child provide/provides a small sample of blood or body tissue.This is/Complete the passage by choosing the si

17、ngular or plural form.Grammar:Subject-verb agreementThese are analysed.Each of the children is/are given a report showing their possible talents.A recent example cited on the website is that one of the testing companies compare/compares the talents of twins Bobby and Benny.Bobby was assessed and his

18、 talents was/were revealed to be mostly scientific:aComplete the passage by choosing the singular or plural form.Grammar:Subject-verb agreement66%chance of success in chemistry and 54%in physics was/were shown.Meanwhile,Bennys highest score was/were shown to be in an arts subject:the test gave him 6

19、8%for literary studies.Is genetic testing reliable?Some scientists say that more evidence is/are needed.Complete the description according to the charts,paying attention to subject-verb agreement.Grammar:Subject-verb agreementFutureLast week,we asked you to design your ideal planet for people on Ear

20、th to live on in the 22nd century.We have received over 500 entries and have been amazed by your imaginations!Heres one of the designs.Sea25%Land75%SurfaceResidential area20%Forest50%Desert10%Arable land 20%LandFrom other planets20%Original residents50%From earth30%PeopleGrammar:Subject-verb agreeme

21、ntGrammar:Subject-verb agreementComplete the description according to the charts,paying attention to subject-verb agreement.Three quarters of the surface is made up of land,while the rest is sea,covering 25%of the surface.Half of the land is covered with trees.Residential area and arable land both a

22、ccount for the same proportion,Grammar:Subject-verb agreementComplete the description according to the charts,paying attention to subject-verb agreement.20%of the total land.The rest is desert,covering 10%of the total land.There are three kinds of people.Fifty per cent of the people are original res

23、idents,30%are from Earth and 20%are from other planets.Discussion:Describe another planet for the future,paying attention to subject-verb agreement.Grammar:Subject-verb agreementThe following questions may be of help to you:1.Is there some water for its residents to use?2.Is the temperature on that planet suitable for people to live in?Here are some words for some planets:Venus:金星 Mercury:水星Mars:火星 Jupiter:木星 Saturn:土星

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