仁爱科普版九年级上册Unit 4 Amazing Science Topic 1 Section D 课件(共26张PPT，内嵌音频)

(共26张PPT)
Unit 4
Amazing Science
Topic 1
Section D
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Language Goal
能熟悉并正确运用本课时的重点单词和短语
能归纳总结一般过去时的被动语态
能用英语谈论GPS的用途
新知学习
重点研讨
课堂小结
当堂检测
学习目标
The stars in the sky were good guiding marks.We could use the stars to find out where we were.
Where were we
新知学习
重点研讨
课堂小结
当堂检测
学习目标
What can you do if you lose your cellphone
Let’s use the GPS.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
What is a GPS
GPS is like a man-made star. We can use it at any time, in any place and in any weather to find out our position.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
GPS can be used in many fields.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
1. How did the early explorers know where they were
They found out where they were by using stars.
2. What’s the disadvantage of using the stars as guiding marks
Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen.
3. What is a GPS Is it useful to use
It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful.
4. What do you think the GPS will be used for in the future
…
Read the passage and discuss the questions on Page 88.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Where Are We
Where are we That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Today, the problem has been solved by the Global Postitoning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Thanks to GPS, we can exactly know w _____we are now. GPS is like a man-made “star”. It can be u____ in any place and any weather condition to find out our p________. In the past, the early explorers had to use stars in the s____ to tell them where they were, however, this method didn’t work well when the weather was bad. So GPS is a great invention that can help humans to better e________ our planets.
here
osition
sed
ky
xplore
Fill in the blanks based on 1a.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Find out the sentences with passive voice
(被动语态）
情态动词的被动语态构成：
情态动词+be+动词的过去分词
1.The stars could be seen.
2.It can be used to study the shape of the earth.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Passive Voice (Ⅱ)
The radio was invented by Guglielmo Marconi in 1895.
When was the digital camera developed
It was developed in the 1970s.
Where was it developed
It was developed in Japan.
What is a rocket used for
It is used for sending satellites or spaceships into space.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
I wish I could go into space some day.
I hope your dream will come true.
It’s said that he invented more than two thousand things during his life.
Inventing is interesting and exciting and everyone can be an inventor.
Functions
1. This is Kangkang’s invention. Look at the information
and the picture.What do you think of it Discuss with
your partners.
Name: Plar (plan-car)
Inventor: Kangkang
Year: 2014
Use: Both flying and driving
Project
新知学习
重点研讨
课堂小结
当堂检测
学习目标
2. Design your own invention. Draw a picture of it and write down the information about it.
Name :____________
Inventor:___________
Year:_____________
Use:______________
3. Show the picture of your invention and describe it to the class.
4. Discuss in groups to decide which is the most useful /interesting/funny invention.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Language points
语态：表示主语和谓语动词之间的关系。
英语有两种语态，即主动语态和被动语态。
主动语态：表示主语是动作的执行者。
被动语态：表示主语是动作的承受者。
如：
Many students study English.(主动语态)
English is studied by many students.(被动语态)
语态
新知学习
重点研讨
课堂小结
当堂检测
学习目标
被动语态结构：
被动语态由“助动词be+及物动词的过去分词”构成。（be有人称和数的变化）, 注意不同时态的不同形式。
eg: The classroom is cleaned by us every day.
The trees were planted by the students last year.
The olds should be taken good care of.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
by many students.
1.Many students study English.
English
is studied
2.They made shoes in that factory.
Shoes
were made
by them
in that factory.
将主动语态变为被动语态方法: 原宾语变主语，动词变为be+动词过去分词，原主语由by连接。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
is spoken by
He speaks English.
English
him.
一般现在时被动结构：be(am/is/are )+ 动词的过去分词
一般过去时被动结构：助动词(was/were)+动词的过去分词
1.肯定句式 ：主语+was /were+v.-ed
2.否定句式 ：主语+was/were + not+v.-ed
3.一般疑问句式： Was /Were+主语+v.-ed
4.特殊疑问句式：疑问词W/H+was/were+主语+v.-ed
新知学习
重点研讨
课堂小结
当堂检测
学习目标
will是第一助动词，否定句，疑问句都围绕will进行变化。
e.g.
(1) He will be met at airport by his friend.
(2) Will an English contest be held next Saturday afternoon
(3) You will not be allowed to go out if you don’t finish your homework.
一般将来时被动结构：will be +动词过去分词
新知学习
重点研讨
课堂小结
当堂检测
学习目标
例：Nowadays, their materials have been changed so that it feels more comfortable.
主： He has finished his homework.
被： His homework has been finished by him.
现在完成时被动结构：have/has +been +动词的过去分词
新知学习
重点研讨
课堂小结
当堂检测
学习目标
by Amy.
Gina
can be taken good care of
2.You should drink more water.
More water
should be drunk
by you.
含有情态动词被动结构：can/may/must/should + be+动词的过去分词
1.Amy can take good care of Gina ．
新知学习
重点研讨
课堂小结
当堂检测
学习目标
注意：
1.主动语态中有些动词，如make, let, see, watch, hear等后面常跟不带to 的不定式作宾语补足语，但变为被动语态时要加上to。
如：I often see the old man run in the morning. → The old man is often seen to run in the morning. 我经常看见那个老人早晨跑步。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
注意：
2.不及物动词happen, take place没有被动语态。
如：The traffic accident happened on Monday.这个交通事故发生在周一。
3. 某些表示主语的品质和状态、自身特征的不及物动词，如cut，sell，read，write，fill，cook，lock，wash，drive，keep等，常用主动形式表示被动意义。
如：The book sells well. 这本书卖得很好。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
新知学习
重点研讨
课堂小结
当堂检测
学习目标
归纳总结一般过去时的被动语态
用英语叙述GPS的用途
Unit 4 Topic 1
Section D
1.People use radios to learn English in the past.
_____________________________________________
2.Jack will show me the photo.
______________________________________________
3.They have raised much money for the Project Hope.
______________________________________________
4.I often hear Mary sing English songs at home.
_______________________________________________
5.We mustn’t throw litter about.
________________________________________________
6.People can visit planets like Mars.
_________________________________________________
新知学习
重点研讨
课堂小结
当堂检测
学习目标
一、把下列句子改成被动语态。
Radios were used to learn English in the past.
The photo will be shown to me.
Much money has been raised for the Project Hope.
Mary is often heard to sing English songs at home.
Litter mustn’t be thrown about.
Planets like Mars can be visited.