(共29张PPT)
UNIT 4
A glimpse of the future
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Using language
Subject-verb agreement
1. Students could learn some words and phrases.
2. Students could get the main usage of this grammar.
3. Students could write a passage by using this grammar.
Learning Aims:
Subject-verb agreement
主谓一致
Subject-verb agreement
What is your understanding of this title?
Share with others
Brainstorming:Before learning this passage, what ideas come to your mind
1. 时态
2. 语态
3. 所有格
Answer the questions.
a. … 50 per cent of my time was spent researching new restaurants.
b. Every recommendation 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)
In sentence (a), “50 per cent” is followed by the uncountable noun “time”, but in sentence (c), “50 per cent” is followed by the countable noun “job” in its plural form.
Answer the questions.
a. … 50 per cent of my time was spent researching new restaurants.
b. Every recommendation 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.
2.What are the subjects in sentences (b) and (d)
In sentence (b): Every recommendation.
In sentence (d): none of us.
Now look for more sentences.
1.Nearly every job is potentially at risk in the long run.
2...
主谓一致即谓语动词在人称和数上要和主语保持一致,主谓一致包括语法一致、意义一致和就近一致,语法一致即谓语动词在单复数形式上要和主语保持一致,意义一致就是谓语动词要和主语意义上的单复数保持一致,就近一致就是谓语动词要和靠近它的主语部分保持一致。
Take notes quickly!
1,"more than one +名词"作主语时,谓语动词常用单数.例如:
More than one teacher gets the flowers. 不止一个教师得到了花.
2,"many a +名词"作主语时,从意义上看是复数,但谓语动词常用单数.例如:
Many a student has been sent to plant trees. 很多学生被派去植树.
3,"half of,the rest of,most of,all of及百分数或分数+of 等后接名词"作主语时,谓语动词形式根据of后的名词而定.例如:
Three fourths of the surface of the earth is covered with water.地球表面四分之三为水所覆盖.
Take notes quickly!
4,all指人时,动词用复数;all指物时,动词用单数.例如:
"All are present and all is going well." 所有人全部到场了,一切进展顺利
5,what引导的主语从句,谓语动词可视表语而定:表语是单数名词时,动词用单数,相反,则用复数.例如:
What they want to get are a number of good books.他们想得到的是大量的好书.
6,and连接的两个单数名词前若用each,every,no修饰,该名词短语作主语时,谓语动词用单数形式.例如:
No book and no pen is found in the schoolbag.
书包里没有书和钢笔.
Take notes quickly!
7,当主语后面有as well as,with,along with,together with,but,like,rather than,except,逗号加and连接几个名词等引导的短语时,谓语动词要与最前面的主语保持一致.例如:
My father as well as his workmates has been to Beijing. 我父亲和他的同事曾去过北京.
8,each作主语的同位语时,谓语动词由主语来决定,与each无关.例如:
They each have a bike. 他们每人有一辆自行车.
9,动词不定式,动词-ing形式短语作主语时,谓语动词常用单数.例如:
Going out for a walk after supper is a good habit.晚饭后出去散步是一个好习惯.
Take notes quickly!
10,the following作主语时,谓语动词的数与后面名词的数保持一致.例如:
The following are good examples下面是一些好例子.
11,以-ics结尾的学科名词,如politics,physics,mathematics等作主语时,谓语动词用单数.以-s结尾的名词news,works,plastics等同属此类.例如:
Politics is now taught in all schools. 现在各学校都开设政治课.
当以-ics结尾的学科名词表示"学科"以外的意义时,用作复数,如:mathematics(运算能力)politics(政治观点)economics(经济意义)等
Practice:
1) Fourty percent of the children in our school ____ boys.
2) Two-fourths of the parts in the buildings ____ low houses.
3) Over fourty percent of the towns _____ destroyed in the war.
are
is
was
Take notes quickly!
Nowadays, some companies offer genetic testing for children’s 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.
√
√
Take notes quickly!
This is / These are analysed.These 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 talents was / were revealed to be mostly scientific: a
√
√
√
√
Take notes quickly!
√
√
√
66% chance of success in chemistry and 54% in physics was / were shown. Meanwhile, Benny’s highest score was / were shown to be in an arts subject: the test gave him 68% for literary studies. Is genetic testing reliable Some scientists say that more evidence is / are needed.
Time travel could result in
a paradox – an event that
contradicts itself. For example,
if a person travelled back
in time and prevented an
event, that event would never
have happened; there would
therefore be no reason for the
person to travel back in time to prevent it.
The world of tomorrow
Take notes quickly!
重点词汇
Time travel 时间旅行 ; 穿越 ; 时空旅行 ; 时空穿梭
result in 导致,结果是
paradox 矛盾的人 ; 悖论 ; 悖论修辞
contradict反驳 ; 驳斥 ;
in time 及时
prevent 阻止 ; 阻碍 ; 阻挠 ;
the reason for …的原因 ; 原因 ;
back in 返回
Discussion: Describe other planet’s future by using subject-verb agreement.
Here are some words for some planets:
Venus: 金星
Mercury: 水星
Mars: 火星
Jupiter: 木星
Saturn: 土星
I think it’s also fair to say that we can get our hopes upwhen it comes to finding cures for serious diseases, such as cancer. I reckon that nanorobots that can eliminate cancerous cells are just around the corner. Some of these ideas may sound far ahead of their time, but I’m
sure they’re bound to
happen sooner or later!
Besides time travel, we have much to look forward to in the future, thanks to advances in technology. One area that is likely to change dramatically within our lifetimes is medical care. Although I wouldn’t bank on patients feeling confident about seeing a robot doctor any time
soon, I’m sure that AI
doctors are on the horizon.
重点词汇
look forward to 期待,盼望 ; 预期,预料
thanks to 幸亏;归因于
medical care 医疗处理
on the horizon 已露端倪的,即将发生的 ;
when it comes to 说到 ; 当谈到 ;
cancerous cells 癌细胞
around the corner 在拐角处 ; 即将发生 ; 在附近
sooner or later 迟早,早晚
Take notes quickly!
Talk about another aspect of life in the future using the expressions you have learnt in this section.
your opinions
... ...
workers
learn by oneself
translators
Try to think about others
Question
Talk with others.
Write your ideas.
1.
2.
3.
Thank you!