Unit 4 Amazing Science Topic 3 Section B 课件(共30张PPT) 2024-2025学年英语仁爱版九年级上册

(共30张PPT)
Unit 4
Amazing Science
Topic 3 Section B
学习目标
重点探究
自主学习
学习导航
当堂检测
课堂总结
拓展提升
新课导入
Could you tell me some recent spaceship developments
学习目标
能熟悉并正确运用本课时的重点单词和短语
能掌握定语从句的结构和用法
能谈论宇宙飞船及计算机操控宇宙飞船的发展
自主学习
New words and expressions
electronic adj. 电子的
spacesuit n. 航天服
telescope n. 望远镜
Spaceships used to be controlled by astronauts.
Now they use electronic controls.
It's important to master computer technology.
What can computers do to spaceships
重点探究
1a Look, listen and say.
(Kangkang is asking Mr.Brown something about spaceships.)
Kangkang: Spaceships are so amazing! Mr.Brown, could
you please tell me some recent spaceship
developments
Mr.Brown: OK. Spaceships which now mainly use electronic
controls used to be controlled by astronauts.
Kangkang: But how do they work
Mr.Brown: Astronauts use computers to control the speed and
direction of their spaceships, even the temperature.
Kangkang: Perfect! But I know so little about computer
technology.
Mr.Brown: It's important to master computer technology.
So I advise you to discover new ways to make
computers serve us better.
Kangkang: Good idea. Thanks for your introduction, Mr.
Brown. I think that if I work hard then nothing
is impossible.
1b What can computers do to spaceships Tick the
possibilities and then check your answers.
( ) 1. make food for astronauts
( ) 2. change the speed of spaceships
( ) 3. control the direction of spaceships
( ) 4. control the temperature of spaceships
Make predictions based on what you know.
√
√
√
Read 1a and choose a correct answer.
( )1. The dialog is mainly about______.
A. the importance of English
B. the development of spaceships
C. how to master computer technology
D. the importance of computer technology
( )2. From the dialog we learn that_____
A. Kangkang will work hard to learn English well.
B. Kangkang will work hard to master computer skills.
C. Kangkang will work hard to make the technology serve us better.
D. Kangkang will become a great astronaut.
D
B
Read 1a again and answer the questions.
1. Who did spaceships use to be controlled by
Astronauts.
2. Does Kangkang know a lot about computer technology
No,he knows little about it.
3. What did Mr. Brown advise Kangkang to do
Mr. Brown advised him to discover new ways to make
computers serve us better.
Kangkang wanted to know something about recent spaceship developments. Mr. Brown told him that spaceships used to be _________by astronauts and now mainly use ________ controls. Then he explained to Kangkang that the speed and ________ of spaceships as well as the temperature are controlled by computers. Kangkang then realized he knew little about computer technology. Mr. Brown _______ him to learn to use computers well and make computers _______ us better in the future. Kangkang made up his mind to work hard to _______ computer technology.
controlled
electronic
direction
advised
serve
master
1c Read 1a and fill in the blanks.
Astronauts should be trained on the machine before they fly into space, it can lift them through the air.
n.机器
Let's learn something about astronauts:
Spacesuit can protect the astronauts in space.
n.宇航服
They take dried food that the water had removed from it so that it will last for a long time.
food ( ) spacesuit ( ) telescope ( ) machine ( )
2
1
3
4
2 A. Listen to four short passages and number the
pictures. The words below the pictures may help you.
1. A spacesuit is like a very small__________.
2. Astronauts add ______ to ________ to make it bigger.
3. On earth, we can look at the _______________ through telescopes.
4. __________ are training on a special machine. It _____ them through the air.
spaceship
water
dried food
stars and planets
Astronauts
lifts
2 B. Listen agiain and fill in the blanks.
3 Read the following sentences and complete them
with that, which, who.
1. Do you know Neil Armstrong _________was the first man to
set foot on the moon
2. This is the spaceship __________ the astronauts use on space.
3. In all big cities, there are things _________ tourists shouldn’t miss!
4. He is a man ________ means what he says.
that/who
that/which
that/which
who/that
1. China is the third nation /that sent a person into space.
2. Yang Liwei is our national hero /who traveled around the earth in
Shenzhou V for 21 hours in 2003.
3. Spaceships /which use electronic controls /used to be controlled by
astronauts.
4. Chang’e I is a spaceship /which was launched as China’s first lunar
probe.
5. More and more people have personal computers /that are used to
play games and watch movies.
4 Listen and read the attributive clauses, paying
attention to the pause, weak form and intonation.
Language points
拓展提升
1. Spaceships which now mainly use electronic controls used to
controlled by astronauts.
过去的宇宙飞船主要由宇航员控制，而现在的主要由电
子控制。
used to do sth. 过去常常做某事
use sth. to do sth 使用……做某事
be used to do sth. 被用来做……
be/get used to doing sth. 习惯做某事
2. It's important to master computer technology.
掌握电脑技术是很重要的。
master 掌握，精通（动词）；主人（名词）
句中It 在此做 形式主语，
动词不定式短语 to master computer technology是真正的主语。
3. So I advise you to discover new ways to make computers serve
us better.
因此我建议你去探索一种新方式让电脑更好地为我们服务。
点拨：advise---建议，劝告（动词）
用法：advise doing sth. advise sb.(not) to do sth.
advice----建议（不可数名词）
用法： give sb some advice to do sth.
eg. 医生建议他戒烟。
The doctor _______him____ _____ ___smoking.
扩展：建议某人不要做某事__________________
eg.我建议你别告诉他。
I advise you ____ ___ ____him.
advised to give up
advise sb. not to do sth.
not to tell
make computers serve us better.使电脑更好地为我们服务。
点拨：make sb/sth do sth. 使……做某事
make sb. +adj. --- 使某人处于某种状态
make sb. + 名词 --- 使某人成为……
make sth done 使……被……
4. Thanks for your introduction.谢谢你的介绍。
thanks for sth./doing sth. 谢谢你的…
eg. 谢谢你的帮忙。Thanks for your help.
=Thanks for _______ me.
5. Kangkang made up his mind to work hard to master computer
technology.
make up one’s mind to do sth. 下定决心做某事
eg. 他们下定决心努力学习英语。
They _____ ____ _____ ____ ___ work hard at English.
helping
made up their mind to
定语从句:
e.g.:
1.Spaceships which /that now mainly use electronic controls used to be controlled by astronauts.
2.China is the third nation that sent a person into space.
3.Everything that I’ve lent to you should be returned on time.
4.A student who/that is always helping others is worth praise.
5.She is the most beautiful girl that often helps me.
注意：一般情况下，当先行词为人时，引导词要用_____或______。当先行词为物时，引导词要用_______或_______。特殊情况，当先行词为不定代词时，或者当先行词前有序数词或最高级修饰时引导词要用______。
who
which
that
that
that
定语从句只能用that 的几种情况：
1.当先行词是anything, everything, nothing (something 除外), few, all, none, little, some 等代词时，或者是由every, any, all, some, no, little, few, much 等修饰时
(1) have you taken down everything that mr. li has said
(2) there seems to be nothing that seems impossible for him in the world. (3) all that can be done has been done.
(4) there is little that i can do for you.
2. 当先行词被序数词修饰 ：
(1) the first place that they visited in london was the big ben.
3. 当先行词被形容词最高级修饰时
(1) this is the best film that i have seen.
4. 当形容词被the very, the only修饰时
(1) this is the very dictionary that i want to buy,
(2) after the fire in his house, the old car is the only thing that he owned.
当先行词指人时，偶尔也可以用who
(3) wang hua is the only person in our school who will attend the meeting.
5. 当先行词前面有who, which等疑问代词时
(1) who is the man that is standing there
(2) which is the t-shirt that fits me most
6. 当先行词既有人，也有动物或者物体时
(1) can you remember the scientist and his theory that we have learned
关系词只能用which，而不用that的情况：
(1)先行词为that, those时，用which，而不用that。
What's that which is under the desk
在桌子底下的那些东西是什么
(2)关系代词前有介词时，一般用which，而不用that。
This is the room in which he lives.
这是他居住的房间。
(3)引导非限制性定语从句，用which，而不用that。
Tom came back, which made us happy.
汤姆回来了，这使我们很高兴。
当堂检测
1. Spaceships is a vehicle are now mainly controlled
by electronic.
2. Liu Yang is an astronaut was the first woman
astronaut to travel into space.
3. This is the pen I used to write with, my
grandfather gave to me.
4. In all the places of interest, there are things tourists
should not miss.
5. Mr. Li is a man means what he says.
一、用that, which, who完成下列句子。
that/which
who/that
that which
that
who/that
课堂总结
掌握定语从句的结构和用法
谈论宇宙飞船及计算机操控宇宙飞船的发展
Unit 4 Topic 3
Section B