资源简介

(共38张PPT)
课型：语法课
课时：Grammar Focus
Unit 5 Power of Ideas
Section A What changes can inventions
bring to our lives
能够在观察例句、语篇研读中，识别一般现在时、一般过去时以及情态动词的被动语态结构，理解被动语态侧重描述事物、客观介绍发明与工程成就的表意功能。（学习理解）
01
能够结合本单元发明、重大工程主题，自主运用被动语态口头或者简单书面介绍一项创造或工程成就，联系现实表达个人观点，实现语法知识在真实情境下的综合输出。（迁移创新）
03
能够借助填空、句型转换等练习，在单句和短文语境中正确选用被动语态形式描述事物，熟练区分主动语态与被动语态的使用场景，完成语法知识的内化运用。（应用实践）
02
教学目标
01
Lead-in
Let’s listen and learn.
02
Presentation
Let’s learn.
I wash my clothes every day.
My clothes
are washed
me
by
everyday.
主动语态
被动语态
done
Let’s learn.
什么时候需要用被动语态呢？
不知道、没必要
不知道谁来的电话
不必提及动作的执行者
The building was burned down.
Let’s learn.
什么时候需要用被动语态呢？
These books are written especially for children.
动作承受者需强调
重点在这件事上
Let’s learn.
什么时候需要用被动语态呢？
You should be requested to make a speech at next meeting.
不说出动作执行者
出于礼貌避免说出执行者。
Let’s learn.
什么时候需要用被动语态呢？
动作承受者需强调
重点在派对这件事上
不知道、没必要
不知道谁来的电话
不必提及动作的执行者
不说出动作执行者
出于礼貌避免说出执行者。
Let’s learn.
一般现在时
am/is/are + done
一般过去时
was/were + done
被动语态
含有情态动词
情态动词 + be + done
原形 过去式 过去分词
become became ___________
buy ___________ bought
catch caught caught
bring ___________ brought
make made made
fly flew ___________
teach taught ___________
take took ___________
become
Let’s review.
bought
brought
flown
taught
taken
Read the sentences. Circle the verbs in the passive voice.
4a
A mini-camera is connected to the front of the glasses.
The oil and salt are also added by the machine itself.
Toys, chairs, tables, and even houses can all be made by the 3D printer.
A radio message was sent across the Atlantic Ocean for the first time in 1901.
被动语态有哪些要点需要注意呢？
Let’s learn.
被动语态并不难，主语后面加 be done。
强调动作谁来干，be done 和 by 需见面。
还有一点别被骗，时态 be 变 done 不变。
被动语态口诀
03
Practice
—Do you know who invented the kite
—Yes, it is said that the kite ________ by Mozi over 2,000 years ago.
was invented
is invented
invents
invented
1.
— Have you finished your report yet
— Not yet. I will make it if I ________ two more days.
give
will give
was given
am given
2.
All the traditional artworks ________ good care of in the national museum.
must take
must be taken
should take
can take
3.
Words and Expressions
be supposed to do sth.
phr. 应当做某事
wheel
n. 车轮，轮子
Complete the sentences with the correct forms of the verbs in brackets.
4b
The telephone ____________ (invent) by Alexander Bell in 1876.
People all over the world ____________ (connect) to each other through the internet.
The word “robot” _____________ (introduce) for the first time in a play in 1920.
It wasn’t supposed to make such a loud noise when the button ___________ (press) to start the machine.
It is believed that the world’s oldest wheel __________ (find) in Eastern Europe.
was invented
are connected
was introduced
was pressed
was found
04
Production
What do you know about the railway
What do you know about the railway
青藏铁路（Qinghai Xizang Railway）被誉为“天路”，2006年全线通车。
修建工程面临三大世界级难题：高原frozen ground（冻土）、高寒缺氧、生态环境脆弱。建设团队研发了特殊工程技术，同时修建动物通道与生态桥梁，兼顾工程建设与野生动物保护。
铁路通车之后极大便利了青藏高原对外交通，带动当地旅游与经济发展。项目积累的高原建设经验，也给世界同类地区基建提供了重要借鉴。
Words and Expressions
frozen
adj. 冻硬的，冰封的
layer
n. 层，表层
Words and Expressions
melt
v. （使）融化；逐渐消失
pipe
n. 管道；管子；烟斗
Words and Expressions
tunnel
n. 隧道；地下通道
tourism
n. 旅游业
Complete the passage with the correct forms of the words in brackets. Make a profile of the Qinghai–Xizang Railway.
4c
The Qinghai–Xizang Railway was completed in 2006. It ________ (connect) Xining to Lhasa, a huge distance of 1,956 kilometres, and it is the highest railway in the world, reaching 5,072 metres above sea level at Tanggula Pass.
The building of the railway was a great challenge. Creative ideas ____________ (need) to solve different problems. In summer, the top layer of the frozen ground would melt and become too soft to build on, so pipes __________ (use) to keep the ground hard. However, in some places, it was impossible to build the railway over the frozen ground,
connects
were needed
were used
Complete the passage with the correct forms of the words in brackets. Make a profile of the Qinghai–Xizang Railway.
4c
so tunnels had to __________ (create) instead. In some other places, bridges ________ (build) to keep the railway up above the ground. These bridges are animal-friendly and ______ (allow) animals to pass under the tracks.
As an important and successful project, the railway has __________ (increase) tourism and economic development in the area. The lessons learnt and experience gained from building this railway will help ___________ (improve) transport in other similar places in the world.
be created
were built
allow
increased
(to) improve
Make a profile of the Qinghai–Xizang Railway.
Qinghai–Xizang Railway
Completed year
2006
Route
Total length
Highest point
Connects Xining to Lhasa
1,956 kilometres
5,072 metres above sea level at Tanggula Pass
Building challenges
1. The frozen ground would melt and become soft in summer.
2. It was hard to build tracks across the frozen land.
Make a profile of the Qinghai–Xizang Railway.
Qinghai–Xizang Railway
Creative solutions
1. Special pipes were used to keep the ground hard.
2. Tunnels were created for some sections.
3. Animal friendly bridges were built above the ground, allowing animals to pass underneath.
Influence
It has increased tourism and economic development in the area.
Value of the project
Lessons and experience from its construction can help improve transport in similar places around the world.
Let’s answer the questions.
1. How long is the Qinghai Xizang Railway
____________________________________________________
2. Why were special pipes used when building the railway
____________________________________________________
3. Why does the writer say building this railway was a challenge
____________________________________________________
____________________________________________________
It is 1,956 kilometres long.
To keep the frozen ground hard.
Because workers had many difficult problems and lots of creative new ways had to be created to finish the project.
Let’s watch and learn.
What can we learn from building the Qinghai Xizang Railway
Do you think this railway is a great invention like project Why or why not
We should be creative and keep trying when we face hard problems. …
I think this railway is a great invention like project because …
Discuss the questions and talk.
05
Exercises
—________ the art festival ________ in our school next week
—Yes, we are preparing for it now.
A．Will; hold B．Can; hold C．Can; be held D．Must; hold
2
—Ningde is doing better in 3Rs now.
—You’re right. The waste from our daily life ________ into four different groups.
A．is divided B．divides C．is dividing D．divided
3
The Qinghai–Xizang Railway ________ in 2006.
A．complete B．completed C．was completed D．is completed
1
Multiple choice.
Bridges __________ (build) to allow animals to pass under the tracks.
Toys and houses can ________ (make) by a 3D printer.
The tickets _________ (sell) out in a second whenever there was a match.
It’s ______ (say) that the pianist will come to our city next week.
Daming ___________ (choose) for the school basketball team yesterday.
A message __________ (send) across the Atlantic in 1901.
Every year, about 750,000 cars _____________ (produce) in this factory.
were built
语法填空
be made
were sold
said
was chosen
was sent
are produced
06
Homework
1. Memorize the new words and phrases.
2. Make up new conversations with your partner using the
grammar we have learned .
3. Finish the exercises.
Homework

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