(共26张PPT)
英语
电子教案
七年级 下册
Epic engineering
4
Unit
can describe engineering works,
the challenges of building them,
and the solutions
Objectives
learn some words about engineering works and ways to overcome challenges
practise sentence stress
use although and though
Tasks
can get a deeper understanding of what epic engineering is
read an article about the Qinghai–Xizang Railway
listen to a radio programme about the Grand Canal
study an example of clever engineering
can communicate on engineering works and ways to overcome challenges
Objectives
talk about the Grand Canal
make a building plan based on a map
Tasks
can present an example of epic engineering by using an outline
write a short description of Dujiangyan
Find sentences you have read that use although or though, and write them here.
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Engineers work hard and create wonders, even though there are many challenges.
Though it is a big challenge, it is fun because engineers try to invent ways to help connect people and places.
Although it was a difficult task, Chinese engineers and workers did their best to overcome the challenges.
Though the engineers were not familiar with this problem, they invented ways to solve it.
Although there were epic challenges, Chinese engineers made history.
Grammar highlights
Both although and though express the idea of contrast. They can be put before or after the main clause. For example:
[main clause]
He failed to solve the problem although/though he tried hard.
[main clause]
Although/Though he tried hard, he failed to solve the problem.
Though is used more often than although in speech. And we often use even with though (but not with although). For example:
Even though he tried hard, he failed to solve the problem.
The workers managed to complete the project on time, although/though they faced many difficulties.
___________________________________________, it will give us a nice place to play and relax.
___________________________________________, it is still used to stop floods.
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Use although or though to connect the two parts of the sentences.
Although/Though it takes a long time to build a park
a
b
c
d
e
f
they faced many difficulties
the dam was built a long time ago
it takes a long time to build a park
the material was expensive
the weather was challenging
they didn’t get any help from abroad
Although/Though the dam was built a long time ago
The engineers at home managed to build the bridge, _____________ ______________________________.
The workers continued to work on the site, __________________ _____________________.
_____________________________________, the scientists decided to use it.
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5
6
a
b
c
d
e
f
they faced many difficulties
the dam was built a long time ago
it takes a long time to build a park
the material was expensive
the weather was challenging
they didn’t get any help from abroad
Although/though the material was expensive
although/though they didn’t get any help from abroad
although/though the weather was challenging
Use although or though to create sentences based on Bobby’s story.
Bobby is a curious little robot. He is exploring an engineering lab when he comes across Max. Max is working on a machine that can turn sunlight into heat. He explains, “It is challenging, but we never give up. We work hard until we invent clever new ways to solve a problem.”
Bobby then meets Sansan. She is building a model bridge. Curious, Bobby asks, “Isn’t it boring ” Sansan replies, “It can be boring. But it’s fun to use maths to plan and design everything.”
Bobby learns that hard work can make anything possible.
Example
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Although it is challenging to invent a machine that can turn sunlight into heat, Max never gives up.
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Although/Though inventing a machine is difficult, Max never gives up.
Although/Though building a model bridge can be boring, it is fun to use maths to plan and design everything.
Although/Though working on a machine is challenging, they invent clever new ways to solve problems.
Example
Bobby:
Engineer:
Bobby:
Engineer:
Bobby then visits other engineers. Work in pairs and act out the dialogue by using although or though.
What are you doing
We are digging through the hard rock to build a tunnel.
Is it difficult
Yes. Although/Though it is challenging, we can use modern machines to help us.
Listen to identify the text type and give your reasons.
Great projects in China
a travel ad
a documentary
a news report
a short story
a
b
c
d
The audio clip is a documentary. It presents information about the Grand Canal in a clear and informative manner, explaining its purpose, construction process, and features. The language used is objective and informative.
Subskill: Identifying the text type
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2
People built the Grand Canal to ____.
a go fishing and boating b transport goods across the country
c stop floods d help boats go up and down
It was not likely that people used ____ when they built the canal.
a b c d
Listen again and choose the best answers.
Great projects in China
Great projects in China
Discuss the question in pairs.
Do you think the Grand Canal is a good example of epic engineering Why or why not
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(Answers may vary.)
The Great Canal is a good example of epic engineering because ancient people built it over a thousand years ago without modern technology. It is the longest man-made river passage and connects the north and south parts of China. It’s also a UNESCO World Heritage Site. Many towns and cities grew up along the canal.
Clever engineering
Listen and choose the best answer.
Subtitles on
Subtitles off
Clever engineering
What does this material explain
a
b
c
d
Why engineers invented locks.
How a lock works.
Why canals are important.
How a boat turns around.
Clever engineering
Listen and match the parts in the picture with their names.
Subtitles on
Subtitles off
paddle
underground pipe
top gate
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3
Clever engineering
B
C
A
Clever engineering
How do we help a boat move up a hill Put the four pictures in the correct order. Then use first, second, next, and finally to describe the steps.
Steps: _______ _______ _______ _______
a
c
b
d
Open the top gates and the boat goes on.
Open the paddles to let the water out of the lock.
Open the gates and let the boat in.
Close the gates, open the top paddles, and let water go back into the lock.
Talking about the Grand Canal in China
Read the dialogue and find out how to check understanding.
A:
B:
A:
We need to make sure that the bridge can support the weight of heavy trucks.
Do you mean we need to make sure the bridge can stand much weight
Exactly. We don’t want to see the bridge break down under the weight of heavy trucks.
Subskill: Checking understanding
Questions:
When did people build it
Why did people build it
How did people build it
How many parts is it made up of
Why do people like it now
Talking about the Grand Canal in China
Work in pairs. Talk with your partner about the Grand Canal in China. Use the questions to help you.
Useful expressions
Listen and pay attention to the stressed words. Mark (') as in the following example.
EXAMPLE 'Building a 'safe 'track is a 'big 'challenge.
Sentence stress I
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Engineers invent ways and work hard to make these amazing wonders.
Brave workers face many challenges such as terrible weather and heavy stones.
Engineers have built passages for animals to cross.
It’s important to protect the environment and animals.
' Engineers have ' built ' passages for ' animals to ' cross.
It’s ' important to ' protect the ' environment and ' animals.
' Engineers ' invent ways and ' work ' hard to ' make these ' amazing ' wonders.
' Brave ' workers ' face ' many challenges such as ' terrible ' weather and ' heavy ' stones.
Working out the rules.
In normal speech, we put stress on words that carry important information such as nouns, verbs, numerals, adjectives and _________ (prepositions / adverbs).
adverbs
Sentence stress I
Read after the recording.
Sentence stress I
感谢观看
