(共18张PPT)
Unit 5
Look into Science
Lesson 30
Science Affects Us
Have you ever done any interesting experiments
Can you describe one of them
fill...with cover...with turn ...upside down
take off pour out stay push ...onto
Review
Have you ever done any interesting experiments
Can you describe one of them
put ...in put ...onto fill...with light let...burn put...over examine use up
be made up of
Review
Read the first e-mail carefully and answer the questions.
1. Who wrote the e-mails
2. What’s the subject of this e-mail
3. Where did Danny, Jenny and Brian do the experiment
4. What does this experiment prove(证明)
Jenny.
It is about an experiment.
In science class
The air pressure pushing up on the cardboard is higher than that of the water pushing down from inside the jar.
that 用来替代“the+前述名词”,以避免重复
Reading tasks
Grammar
1. The price of rice is lower than that of meat.
大米的价格比肉（的价格）低。
that 代替前面的the price，
但是它们的定语不同，同类不同物。
2. 他的故事比我讲的有趣。
His stories are more interesting than _______ I told.
those
如果比较的名词是复数, 则用 “those”来替代
Lead in
Look at the picture .
It is the earliest mobile phone.
It was only used to make a telephone call.
With the secntific development , we could usethe the mobile phone.
to send messages to contact others.
Lead in
Nowadays, what can we do with the mobile phone
We use it to go shopping, watch the vedio, check all kinds of information and so on.
The development of science makes our life more convenient.
Lead in
The carriage can travel only around 80 kilometers a day.
If we take it to Shanghai, we will need about 20 days to get there.
The car can travel about 100 kilometers an hour.
It takes about 15 hours to get to Shanghai by car.
Lead in
The plane can go up to about 800 kilometers per hour.
High-speed trains can reach speeds of up to about 200 kilometers per hour.
Taking the high-speed train to Shanghai needs about 8 hours .
It just needs 2 hours to get to Shanghai. It can help us save plenty of time.
Science affects people’s _________lives. Without the scientific developments of recent years, our lives would be very different. Can you imagine life without computers or ________________ Scientific ___________ are making our lives better and better. DNA is really one of the most amazing things on the earth. Many people think it will ________ the world.
mobile phones
change
discoveries
everyday
Read the lesson and fill in the blanks.
Reading tasks
Fill in the blanks with the correct forms of the words in the box.
discover affect suggest place develop
1．Jenny ________they use a stronger piece of cardboard for the experiment.
2．The air pressure ________ the result of the experiment.
3．The experiment led to a wonderful _________．
4．What are your plans for the ____________ of your company
5．They used a rock to hold the map in _______.
suggests
affects
discovery
development
place
Words
New Words
suggest v. “建议;提出”, 后常接名词、代词、动词的 “ing”形式或that从句, that从句用should+动词原形, should 可以省略。
She suggested that we(should)take a walk.
她提议我们出去散步。
Danny suggested going together in one car.
丹尼建议大家同坐一辆车去。
going together in one car是建议的内容，用动名词作宾语。
that we (should)take a walk是建议的宾语从句。
suggest的名词形式为“suggestion”,意思是“提议;建议;暗示”, 为可数名词。
有关怎样去教育我孩子，需要你的建议。
I would like your suggestions about how to educate my child.
New Words
The higher air pressure outside the jar holds the cardboard in place.
in place 意思是 “原位;在恰当的位置”
I like to have everything in place.
Language Points
广口瓶外面的空气压力大,把纸片托在原位置。
Here are some inventions. How do they affect our everyday lives Talk about them with your partner.
TV camera radio computer telephone
light bulb clock washing machine compass
telescope X ray eyeglasses
With TV
I watch TV to get information.
____________________________________________
Without TV
I would spend more time talking with my family.
__________________________________________________
Group Work
Show your opinion to the class.
Action
Emotional boost
Science and technology can change our lives.
As a middle school student, what should we do for the times
Improve our own quality, enhance the sense of innovation.
提高自身素质，增强创新意识
affect suggest development mobile phone discovery
turn…over push up push down in place
I suggest you try it,too!
Do you want to surprise your friends
Scientific discoveries are making our lives better and better.
The air pressure pushing up on the cardboard is higher than that of the water pushing down from inside the jar. The higher air pressure outside the jar holds the cardboard in place.
Summary
