外研版八年级英语下册：Module 3 Unit 2　We have not found life on any other planets yet.课件(共26张PPT)

(共26张PPT)
英语
Module 3　
Journey to space
Unit 2　We have not found
life on any other planets yet.
词汇专练
CI HUI ZHUAN LIAN
PART ONE
目录
词汇专练
要点解说
课后巩固
一、短语翻译。
1.数十亿颗行星　　　　　　　　　　　 　　　　　　　　　　　
2.围绕太阳运转 　　　　　　　　　
3.……的一部分　　　　　　　　　　　 　　　　　　　　　　　
4.在太空中 　　　　　　　　　　　
5.在宇宙中 　　　　　　　　　　　 　　　　　　　　　　　　　
6.在地球上 　　　　　　　　　　　
7.我们中没有一个 　　　　　　　　　　　 　　　　　　　　　　
8.与……沟通，交流 　　　　　 　　
billions of planets
go around the sun
(a) part of
in space
in the universe
on the earth
none of us
communicate with
1.We should protect the 　　　　　 　(环境) because we have only one earth.
2.It is 　　　　　　(不可能的) to finish the job before this weekend.
3.Look，a 　　　　　　(群) of pupils are visiting the museum.
4.Scientists have discovered a new way to use the 　　　　　　(太阳的) energy.
5.We know nothing about the 　　　　　　(宇宙).
6.　　　　　　 (没有一人) of us likes him.
7.I like 　　　　 　　(交流) with the foreign teachers at school.
二、根据汉语提示写出单词。
environment
impossible
group
solar
universe
None
communicating
要点解说
YAO DIAN JIE SHUO
PART TWO
目录
词汇专练
要点解说
课后巩固
1.Scientists think that there has been life on the earth for hundreds of millions of years.
科学家认为地球上的生命已有数亿年的历史。
There are billions of stars in the Galaxy …
银河系中有数十亿颗恒星……
“millions of+n.”是约数，意为“数百万的”，million与of连用，要加－s。 类似的结构还有hundreds of(数百的)，thousands of(数千的)，billions of(数十亿的)。 如：
There are thousands of people at the station.
车站里有好几千人。
hundred，thousand，million和billion前面若有确定的数字，则是确数，要用单数形式。
如：I have collected two hundred stamps.
我已收集了200张邮票。
2.None of them has an environment like that of the earth，so scientists do not think they will find life on them.这些行星没有像地球那样的环境，所以科学家不认为他们会在那里找到生命。
none of后面接代词或名词，意为“没有一个”，表示全部否定，谓语动词可用单数或复数形式。
如：None of them has / have been abroad.
他们当中没有一个出过国。
None of these pens works / work.
这些钢笔没有一支能用的。
3.The sun and its planets are called the solar system …
太阳和围绕它转的行星被称为太阳系……
“be called …”意为“被叫作……”，这是被动语态。
如： He is called “People’s Artist”.
他被称为“人民艺术家”。
4.However，no spaceship has travelled far enough to reach other stars in our Galaxy.但是，还没有宇宙飞船飞得足够远能到达我们银河系里的其他星球。
enough可作形容词，如enough money(足够的钱)， 但在这里作副词，放在副词的后面。
如：He is old enough to go to school by himself.
他够年龄自己上学了。
5.… with so many stars in the universe，are we alone …　……宇宙中有这么多的星球，我们是孤独的吗……
alone可以用作形容词或副词，作形容词时通常在句子中作表语，意为“独自一人”；lonely只能用作形容词，在句子中充当表语或定语，意为“寂寞的”。
如：The old man lives alone，so he often feels lonely.那老人独自居住，所以他常常感到寂寞。
注意：alone不可放在名词前，而lonely可放在名词前。可以说a lonely man，但不能说an alone man。
课后巩固
KE HOU GONG GU
PART THREE
目录
词汇专练
要点解说
课后巩固
(　　)1.　　　　 people are on the planet. 　
A.Billion of B.Billions C.Billions of D.Billion
(　　)2.With the help of the Internet，news can 　　　　every corner of the world.
A.arrive B.go C.get D.reach
一、单项选择。
C
D
(　　)3.— May I be allowed to choose a summer course
— It’s up to you.You’re 　　　　to make your own decision.
A.too old　 B.enough old C.old enough　 D.old too
(　　)4.— I know Old Joe lives 　　　　.
— We are supposed to visit him from time to time.Then，he won’t feel 　　　　.
A.alone；alone　 B.lonely；lonely
C.lonely；alone　 D.alone；lonely
C
D
(　　)5.— Oh，Jack，your MP5 player looks nice.Is it new
— No.I 　　　　it for two years.
A.am having B.bought
C.have had D.have bought
C
1.到目前为止，他已经买了不止一套房子。
So far，he 　　　　　　 　　 　　　 　　　　　　　house.
2.那片森林里有数百万棵树。
There are 　　　　　　　　　　　　　　　　　　in that forest.
3.地球绕着太阳转。
The earth 　　　　　　　　　　　　the sun.
二、完成句子，每空一词。
has bought more than one
millions of trees　
goes around
4.要到达月球是很困难的。
　　　　　　　　 / 　　　　　 　　 the moon.
5.和老师沟通是很重要的。
　　　　 　　　　 　　　　　　　 　　is very important.
It’s difficult hard to reach
Communicating with teachers
An astronaut’s work may sound exciting，but living in space isn’t as fun as you think.The website www. lists the disadvantages of living in space.Here are some of them.
　 When astronauts work outside the station during spacewalks，they have to wear special gloves.The gloves are very tight.They can hurt the astronauts’ fingernails (手指甲) and even make them fall off.
三、阅读理解。
　In space，there isn’t much choice of what to eat.It’s hard to get fresh fruits and vegetables.It is not OK to eat bread because it leaves crumbs (面包屑).Crumbs could fly around everywhere.
　 In space，it is impossible to have a good shower because water can fly all over the ship and break the machines.Astronauts have to use a special water－shooting (喷水) gun and a washcloth.
　 Astronauts lose their bone strength quickly during their stay in space.So far，there has been no way to solve this problem yet.They do exercise while they’re in space to try to keep their bones strong as long as possible.
Perhaps the hardest part of life in space is the feeling of loneliness.Astronauts sometimes have to spend weeks and even months away from the earth.They miss their friends and families.
(　　)1.People often think the life in space is 　　　　.
A.terrible　 B.lonely C.hard　 D.fun
(　　)2.What may hurt astronauts fingernails while working in space
A.The washcloth.
B.The special gloves.
C.The water－shooting gun.
D.Crumbs.
D
B
(　　)3.How do the astronauts have a good shower in space
A.By eating bread.
B.By breaking the machines.
C.By using a special water－shooting gun and a washcloth.
D.By wearing gloves.
(　　)4.How do the astronauts keep their bones strong in space
A.By taking medicine. B.By doing exercise.
C.By taking a good rest. D.By walking in space.
C
B
(　　)5.What may be the hardest part of life for astronauts in space
A.They feel very lonely.
B.They have to stay alone in space.
C.They have no friends.
D.They have no families.
A
A.You should press the cut with a piece of cloth to stop the blood，and then go to the doctor as quickly as possible.
B.Don’t use earphones when walking outside.It’s dangerous to do so because you can’t notice those cars，buses or trucks back and forth.
C.Your bag should be put within your reach，or it is easy enough for the thieves to steal the things in your bag.
四、配对阅读。左栏是学生们五种不妥的行为或危险的情形，右栏是老师所给出的七条建议，请为每个人选择最合适的建议。
D.If you are followed by a stranger，cross the street and go in the other direction.Next，go and get help from others if it is necessary.Don’t go home directly.You are safer on the street than you are in your home alone.
E.You can’t leave school by yourself.Don’t forget it’s safer in the schoolyard than the outside world.
F.Don’t sleep on buses，or you may miss the right stop.
G.If your house catches fire and you have to escape through smoke，move on your hands and knees with your head 30 centimetres to 60 centimetres above the floor.Please remember there is cleaner and cooler air near the floor during the fire.
(　　)1.Yesterday Li Hong found a stranger following her all the way.She ran home as quickly as possible.
(　　)2.Tom often uses earphones when walking outside.
(　　)3.It’s a long way from Wang Jun’s home to school，so he often sleeps all the way on the bus.
(　　)4.There are too many passengers on the bus today，and Li Feng puts his bag out of his reach.
(　　)5.The house is on fire and it is full of smoke in the house，and Xi Ming is in it.
D
B
F
C
G