仁爱科普版九年级上册Unit 4 Amazing Science Topic 3 Section B 课件 (共24张PPT，内嵌音频)

(共24张PPT)
Unit 4 Topic 3
China is the third nation that
sent a person into space.
Section B
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
学习目标
What do you know about the spaceships
Spaceships which now mainly use electronic
controls used to be controlled by astronauts.
electronic / lek tr n k/ adj 电子的
used to do sth 过去常常做某事
electric adj 用电的、电动的
Astronauts use computers to control the speed and direction of their spaceships, even the temperature.
新课讲授
What are computers used for
It's important to master computer technology.
What can computers do to spaceships Tick the possibilities and then listen to 1a to 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.
√
√
√
Listening
1b
Fast-reading
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 and answer the following 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.
Reading
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.
1c
Read 1a and fill in the blanks.
controlled
electronic
direction
advised
serve
master
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 电子控制。
点拨：
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
Language points
2.It's important to master computer technology. 掌握电脑技术是很重要的。
点拨: 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。
master computer technology 掌握电脑技术
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
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
Watch the flash of 1a, Then act out the dialogue in pairs.
Grammar
定语从句:
eg:
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:
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.
定语从句:
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
定语从句:
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。例如:
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。例如:
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。例如:
Tom came back, which made us happy.
汤姆回来了，这使我们很高兴。
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
Let's learn something about astronauts:
Astronauts should be trained on the machine before they fly into space, it can lift them through the air.
Spacesuit can protect the astronauts in space.
n.宇航服
n.机器
They take dried food that the water had removed from it so that it will last for a long time.
2 A. Listen to four short passages and number the pictures. The
words below the pictures may help you.
food ( ) spacesuit ( ) telescope ( ) machine ( )
2
1
3
4
2 B. Listen to the tape and fill in the blanks.
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
4 Listen and read the attributive clauses, paying attention to the pause, weak form and intonation.
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.
We learn:1. Some words: electronic, spacesuit
2. Some phrases: master computer technology,
advise sb. to do sth.,
make sb./sth. do, made up one’s mind
3. Some sentences:
(1) Spaceships are so amazing.
(2) I think that if I work hard then nothing is impossible.
We can: 1. Learn more about the astronauts’ life.
2. Read the attributive clauses with correct
pause, weak form and intonation.
课堂总结
Read 1a.
Memorize the useful expressions and key sentences which we learned today.
Finish Section B in your workbook.
Preview Section C.
Homework