Unit 5 Lesson 30Science Affects Us 课件 冀教版英语九年级全册（21张PPT含音频）

(共21张PPT)
Unit 5 Lesson 30
computers
smart phones
导入新知
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
THINK ABOUT IT
·Have you ever done any interesting experiments Can you describe one of them
·What would life be like without computers or mobile phones ①
Hi Wang Mei，
How are you？Everyone here is fine.
Do you want to surprise your friends ②
Brian，Danny and I did an experiment in science class this
合作探究
week. I suggest you try it，too！ ③ First，get a jar full of water and a piece of cardboard. Cover the jar with the cardboard and turn the jar over. Next，take your hand off. Can you guess what happens The cardboard holds the water in the jar! 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. ④
Science is interesting. Don’t you think so
Jenny
Dear Jenny，
I’m very well. Thanks! The experiment you did sounds interesting.
Yes，science is interesting，and it affects our everyday lives. ⑤ Our lives would surely be very different without scientific developments. I always wonder what life would be like without computers or mobile phones. Scientific discoveries are making
our lives better and better.
This week we had some science lessons，too. I enjoyed learning about DNA. It’s really one of the most amazing things on the earth! Scientists are doing so many new things with DNA.I think it will change the world. It will be interesting to see what happens.
Wang Mei
①Do you want to surprise your friends
surprise /s 'pra z/ v. 使惊奇 n. 惊喜, 惊奇
考点1
surprise 的常用短语：
① get a surprise 吃了一惊
② in surprise 惊讶地
③ to one’s surprise 令某人吃惊的是
考点精讲
e.g. The results might surprise you!
结果会使你惊讶!
I have a surprise for you.
我有一个惊喜给你。
To my surprise, he can finish the work in a short time.
令我吃惊的是, 他能在很短的时间内完成这项工作。
用作动词
用作名词
e.g. All of them were surprised at the UFO.
他们都对不明飞行物感到吃惊。
We were deeply moved by his moving story.
我们都被他的感人事迹深深地打动了。
surprising 意为“令人惊奇的”, 常用来修饰事物。
surprised 意为“感到惊奇的”, 主语多为人。be surprised at对……感到吃惊, be surprised to do sth. 对做某事感到惊讶。
辨析：surprising 与surprised
② I suggest you try it, too!
suggest /s 'd est/ v. 建议
考点2
温馨提示：suggest作及物动词, 意为“暗示, 表明。”此时宾语从句不用虚拟语气。
suggest suggest +名词/代词（to sb.）（向某人）建议某事
e.g. Tom suggested a new plan to me yesterday.
汤姆昨天向我提出了一个新计划。
suggest suggest（sb. ） doing sth. 建议（某人）做某事
e.g. I suggested going to a movie.
我建议去看电影。
“suggest+that从句” “建议……”，从句用虚拟语气。
e.g. He suggested that you (should) go there the
next day. 他建议你第二天去那里。
Language points
suggest 作及物动词，意为“建议、暗示”，后加名词、代词、动名词作宾语；
也可用在句式suggest somebody to do something 中，表示“建议某人做某事”。
e.g. ①They suggested building a new school. 他们建议建一所新学校。
②I suggest you to do like me. 我建议你想我一样这么做。
③His report suggested the huge loss. 他的报告暗示了巨大的损失。
suggestion 是它的名词形式，意为“建议”，作可数名词，复数形式是suggestions。
e.g. They gave some useful suggestions at the meeting.
在会议上他们给我们提出了一些有用的建议。
1.I suggest you try it，too！
2. First, get a jar full of water and a piece of cardboard.
首先，取满满一罐子水和一张硬纸片。
full of water用在名词jar之后作定语，不定式、介词短语、副词和定语从句都可用在名词后作定语。
e.g. ①I have a lot of work to do. 我有很多要做的工作。
（不定式在名词后作定语）
②The eraser on the desk is Mary’s. 书桌上的橡皮是玛丽的。
（介词短语在名词后作定语）
③Did you meet John on your way home 你在回家的路上遇见约翰了吗？
（副词在名词后作定语）
④This is the pen that I’m looking for. 这就是我正在找的笔。（定语从句在名词后作定语）
Language points
3. Scientific discoveries are making our lives better and better.
一些科学发现使我们的生活变得越来越美好。
“比较级 + and + 比较级”表示“越来越”。
e.g.
①My sister is growing taller and taller. 我妹妹长得越来越高。
②Our city is becoming more and more beautiful. 我们的城市变得越来越美了。
Language points
discovery作可数名词，意为“发现、发觉”，复数形式是discoveries。
e.g. This is an important discovery. We should pay more attention to it.
这是一个重要的发现。我们必须注意它。
discover是及物动词，意为“发现”，后加名词、代词或宾语从句。
e.g. We have discovered their secrets. 我们已经发现了他们的秘密。
Language points
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
本节课主要学习了：
重点单词：without, surprise, suggest, too, sound, enjoy, information等。
重点短语：better and better等。
归纳新知
再 见