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(共35张PPT)
WORKING THE LAND
xb1 unit5
Discover Useful Structures
Learning Objectives
At the end of class, you will be able to:
1. Understand the definition, structure, and leading words of subject clauses.
2. Identify and correctly use three types of leading words: subordinating conjunctions, connective pronouns, and connective adverbs.
3. Admire scientific dedication and selfless contribution through the story of Yuan Longping.
CHANGSHA
HUNAN
What’s the shape of the museum
Why this museum was built
Lead-in Watch a vedio and answer the following questions
Why this museum was built is to honor Dr. Yuan Longping.
主
系
表
在复合句中充当主语的从句叫主语从句。
Lead-in Watch a vedio and answer the following questions
Let’s go to the hall 1---Rice through the Years
Chinese Rice History and Culture Exhibition
01
Observe and Summarize
That rice developed from wild plants to farmed crops is shown in the exhibition.
Whether Stone Age tools were mainly used for rice farming can be known from the displayed items.
What methods farmers used in farming were passed down.
不做成分
不做成分
定语
01
Observe and Summarize
Which tool was used for rice farming is displayed in the museum.
Who developed hybrid rice surprised the whole world.
Whose tools were used in the past is part of the exibition.
Whom the farmers respected can be known from the story.
定语
主语
定语
宾语
01
Observe and Summarize
When the super hybrid rice was developed is mentioned.
How ancient people farmed rice is demonstrated with models.
Why Yuan Longping developed hybrid rice is to boost yields in farmers’ fields.
Where the earliest rice grains were found is in Zhejiang Province.
状语
状语
状语
状语
01
Observe and Summarize
分类 词形 词义 成分
从属连词
连接代词
连接副词
Leading words of subject clauses
that
无词义
无成分
whether/if
who/whoever
which/whichever
what/whatever
whom/whomever
whose/whosever
when
where
why
是否
谁/无论谁
谁的/无论谁的
哪个/无论哪个
什么/无论什么
什么时候
什么地点
为什么
无成分
主、宾、表
宾
定
主、宾、表、定
主、宾、表、定
时间状语
地点状语
原因状语
how
如何
方式状语
谁/无论谁
Tip:主语从句位于句首时，只能用whether不能用if
Let’s go to the hall 2---A Fantastic Journey
The Life of Rice Exhibition
02
Analyze and Explore
That the “magical seed”stage is the starting point of the whole life circle of rice
is clear.
The subject is too long. What should we do for the long subject
It
that the “magical seed”stage is the starting point of the whole life circle of rice.
is clear
02
Analyze and Explore
That the “magical seed”stage is the starting point of the whole life circle of rice
is clear.
It
is clear
that the “magical seed”stage is the starting point of the whole life circle of rice.
02
Analyze and Explore—Rewrite the following sentences using “it” as formal subject
That machine used for farming improved working efficiency is a fact.
That microelements are essential for rice growth is proven.
That exhibition presents the process of rice farming is fascinating.
It is a fact that machine used for farming improved working efficiency.
It is proven that microelements are essential for rice growth.
It is fascinating that exhibition presents the process of rice farming.
1
02
Analyze and Explore
2
3
It is a fact that machine used for farming improved working efficiency.
It is proven that microelements are essential for rice growth.
It is fascinating that exhibiton presents the process of rice farming.
a fact
proven
fascinating
It be + + 从句
It be + + 从句
It be + + 从句
(a fact; a pity; a good idea; good news; a question...)
(known; said; reported; believed; suggested...)
(important; necessary; obvious; possible; clear...)
名词
过去分词
形容词
03
Explore and Summarize
That Yuan Longping had realised his dream of seawater rice surprised the whole world.
It is estimated that about 60% of China’s rice consumption is from Yuan’s hybrid strains.
主语从句的语序要用 语序。
陈述
03
Explore and Summarize
How the hybrid rice will expand output greatly is expected.
Whether it is possible to develop hybrid rice is in debate.
单个主语从句作主语时，谓语动词要用 。
单数
Let’s go to the hall 3---Dreams Come True
Yuan Longping and Hybrid Rice Exhibition
04
Apply and Evaluate
袁隆平有两个梦想是家喻户晓的事情。
That was a household story.
袁隆平所展望的是水稻像高粱一样高。
that rice plants are as tall as sorghum.
Translate the following sentences into English by using subject clauses.
Yuan Longping had two dreams
What Yuan Longping envisioned is
全球五分之一的杂交水稻能够得以种植是因为袁隆平的杂交水稻。
Why
04
Apply and Evaluate
a fifth of rice can be grown globally is due to Yuan
Longping’s hybrid.
众所周知，袁隆平不太关心名利和金钱。(用it做形式主语)
It is well-known that Yuan Longping cared little for celebrity and money.
袁隆平在国内外获得众多奖项是因为他做出的宝贵贡献。
Why Yuan Longping received numerous awards both in China and abroad was due to his invaluable contributions.
04
Apply and Evaluate
JOIN US
We are looking for 3 tour guides in our museum. As a tour guide, you will introduce the history of rice, the great man---Yuan Longping and so on to visitors from all over the world.
How to apply:
Come to the Room201 in the museum for an interview before November 20th, 2025. The person who will do a good jod in the interview will have a chance to join us.
November 10th, 2025
05
Imitate and Create
Wow, it’s an employment notice here, so it’s a good opportunity for me. Let me read it.
Task 2
Design a bookmark
Task 3
Make a short presentation
翻
翻
Task 1
Museum Tour Guide Simulation
翻
05
Cooperate and Create
For example:
"Ladies and gentlemen, what you are going to see next is the original hybrid rice sample. It is truly amazing that one man's dream could feed so many people. And that he never stopped his research shows his persistent spirit."
If you are a museum tour guide, please introduce one of three halls of Longping Hybrid Rice Museum to the visitors by using at least two to three subject clauses.
Task 1
Museum Tour Guide Simulation
05
Cooperate and Create
What Yuan Longping once said is that “Man is like a seed. You have to be a good seed.” As a student, what makes a good seed
Design a bookmark（书签）for yourself and write down a sentence on it, using a subject clause.
Task 2
Design a bookmark
05
Cooperate and Create
What
a
good
seed
needs
is
strong
heart
to
face
difficulties.
a
For example:
Use subject clauses to introduce Yuan Longping’s good qualities, in the form of a short presentation.
For example:
What leaves a deep impression on me is that Dr. Yuan overcame numerous difficulties to tackle the crisis of food shortage by intense efforts. It is a must that he had great vision and owned the innovative spirits.
his compassion/sympathy for farmers...
his intense efforts to overome...
his love/care/devotion/selflessness...
his perseverance/ hard-work/determination to tackle...
his innovation/vision in....
Whether...depends on...
What leaves a deep impression on me is that...
What makes him remarkable is that...
That...touches me most is that...
Why...attributes to...
It is a must that...
The following phrases or sentence structures may help you.
Task 3
Make a short presentation
05
Cooperate and Create
Certificate
In recognition of your outstanding performance in the interview, you are hereby officially appointed as:
Honorary Guide in the Longping Rice Museum
Date: 2025.11.12
Signed: Serena
We are so proud of you!
Congratulations!
06
Summary
Subject Clauses
1.定义：
主语从句：在复合句中充当主语的从句。
2.连接词：
①从属连词：that, whether, if
②连接代词：who, whom, whose, what, which, whoever, whomever, whatever, whichever
③连接副词： when, where, why, how
3. It 做形式主语。
4. 注意：主语从句语序用陈述语序。
单个主语从句作主语时，主句谓语动词用单数。
人就像种子，
要做一粒好种子
——袁隆平
Man is like a seed. You have to be a good seed. Knowledge is also like a seed. What you grow today will grow into a forest tommorrow.
Assignment
2. Finish the exercises on the page 53 in the textbook.
1. Write down a mini-paragraph, using at two subject clauses, to answer the question: What is the most important thing you learned today
Thanks for your listening!

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