(共25张PPT)
Unit 5 Working the Land
Discovering Useful Structures—
Subject Clauses
That Yuan Longping has developed hybrid rice to help relieve the world food is amazing.
课堂目标
主语从句的魅力
Step 1: Lead-in
1.Look at the complex sentences below and state the functions of the noun Clauses italicized. Then find similar complex sentences from the text.
(1)What Yuan Longping really cared about was not money or celebrity.
(2)That Yuan Longping has realized his dream of seawater rice surprised the whole world.
(3)It surprised the whole world that Yuan Longping had realized his dream of developing seawater rice.
2.Match the sentence parts and then translate the completed sentences into Chinese. Pay attention to how the subjects are introduced differently.
(1)____remains an unanswered question.
(2)____ is an important topic for us to research.
(3)____ is that these chemicals may even cause cancer.
(4)____ these vegetables can even be planted without any soil through this new technology.
(5)____ is the reason why some people prefer to live in the country rather than in the city.
B
E
A
C
D
A. What worries many people
B. That the lifestyle is slower and healthier
C. How we can find a suitable solution to produce sufficient food while keeping the environment safe.
D. When these wheat farmers will join this pilot experiment
E. It amazed all of us that
3.Read the passage and underline all the subject clauses. Then in pairs discuss whether the sentences with subject clauses can be paraphrased.
Grandma has been complaining about the vegetables sold in the supermarket, which have been grown using chemical fertilisers. To her, that they look beautiful on the outside is obvious. However, what she is unhappy about is the lower nutritional value and reduced flavor. Now that both of my grandparents have retired from their jobs in the city, how they are going to spend their retirement is an important decision for them. Whether they can live a healthy life is the first thing they are considering. So they have made up their minds to move to the countryside, where they can live a green life.
4.What qualities do you think make a person like Yuan Longping so successful Discuss and prepare a presentation. The following points and expressions may help you.
1.What impresses me most is that he is devoted to the research of hybrid rice.
2.What makes him a great agricultural scientist is that he succeeded in developing hybrid rice to relieve the hunger of world population.
3.That she never gives up every patient is her most important quality.
4.It is important that he works together with his team.
5.Whether he can succeed depends on his intense effort to overcome difficulties.
6.It is important that he should show his determination to tackle the crisis of food.
7.Whether her dream to develop a new cure for cough can become a reality depends on her devotion to the medicine research.
8.That she shows her love and care for every student in daily life is her most quality.
Subject clauses主语从句
That Yuan Longing has developed hybrid rice to tack the crisis of the hunger of the world population is well known. Whether we can become a person like him depends on our intense effort.
Step 2: Learn subject clauses
在英语中,有的从句在复合句中的作用相当于名词,称作名词性从句。
在复合句中用作主语的从句叫作主语从句。
引导主语从
句的连接词
连词that ;whether(不能用if)
连接代词:who;whoever;what;whatever;which
连接副词:when;where;how;why
主语从句要用陈述句语序。
That the earth is round is a fact.
地球是圆的,这是个事实。
Whether she will win the prize is still unknown.
还不知道是否她能获奖。
Whoever is the last to leave should turn off the lights.
凡是最后离开的人应该把灯关掉。
How this could be done was a good question.
这如何实现是个值得研究的问题。
Why she didn’t show up remains a puzzle.
她昨晚为什么没来仍然是个谜。
What some scientists have found is that their long-term use can
sometimes harm both the land and people’s health.
有科学家发现长期使用(化肥和杀虫剂)有时会对土地和人体健康
造成损害。
为了避免主语显得过长,尤其是陈述句作主语从句时,可以用it作句子的形式主语,把主语从句移到句子的末尾。
It is a fact that the earth is round.
地球是圆的,这是个事实。
It is still unknown whether she will win the prize.
还不知道是否她能获奖。
It is believed that the couple have left the country.
据信那对夫妇已经离开了这个国家。
Typical patterns of subject clauses
(主句谓语动词一般用单数形式)
主语从句的特殊模式:
1.It is /was + n/adj./p.p. +clause
It is a pity that he can’t come.
It is certain that you will make it.
It is reported that the famous writer was arrested for no good reason.
主语从句的一般模式:
Clause + v.
即:主语从句+谓语
即:形式主语it+系动词+形容词(名词词组、过去分词)+ that从句
That she will win the match is certain.
It is important that we teens should learn English.
It is a good news that he will attend the meeting on behalf of our school.
It is said that our school will hold a sports meeting.
It is strange that we teens should be so full of energy.
It is a fact that … 事实是……
It is an honor that… ……非常荣幸
It is common knowledge that… ……是常识
It is natural that… 很自然……
It is strange that… 奇怪的是……
It has been proved that… 已证实……
2.It + vt. + O + 主语从句
It worried her a bit that her hair was turning grey.
联想:It struck/hit sb. + 句子: 某人突然想到……
3.It + vi. + 主语从句
It doesn’t matter whether you go today or tomorrow.
联想:It occurred to me that …某人突然想到……
It happens that… 碰巧……
It +seems (happens,appears等不及物动词)+that从句
It seems that Katy is not coming to this party.
连接词: that与what引导主语从句
What he said makes me happy.
That a new teacher will come is true.
that 只起连接作用,无意义,在从句中不充当任何成分, 且
在宾语从句中有时可省。 what 既起连接作用, 又在从句中作主语、宾语或表语 (且在名
词性从句中只有what可作表语)
主
语
从
句
的
连
接
词
用法
What was in the house was destroyed in the big fire.
What matters is your attitude to others.
What is wrong is a common sentence in daily English.
That you don’t like him is none of my business.
连接词: that与what引导主语从句
whether是否。引导主语从句;常与or not 连用。
________ we’ll go camping tomorrow depends on the weather.
2. Whether this story is inspiring remains to be seen.
3. _______ they can do it matters little to us.
Whether
Whether
_________________等引导的主语从句不含有疑问意义,相当于名词后加一个定语从句,而____________等引导的主语从句含有疑问意义。
whoever, whatever
Who, what
Who will take the position isn’t decided.
Whoever is present at the meeting can get a nice gift.
what, whatever, who, whoever引导主语从句
What he saw and heard made me happy and excited.
我所看到的和我所听到的令我开心而兴奋。
Whatever you do can be seen on the screen.
凡是你所做的都能在屏幕上看到。
what, whatever, who, whoever引导主语从句
1.他犯了那样一个错误真是遗憾。
_________________________ is a pity.
2.他来不来不重要。
________________________ doesn’t matter.
It doesn’t matter whether…
That he made such a mistake
It is a pity that…
Whether he will come or not
练一练
___ is a fact that English is being accepted as an international language.
2. It worried her a bit _______ her hair was turning gray.
A. while B. that
C. if D. for
★
练一练
It
Go over what we have learnt.
Finish the Exercises in this unit on workbook.
Homework
Thanks