Unit 4 Amazing Science Topic 1 When was it invented SectionA课件（27张PPT）

课件27张PPT。Welcome to my class!Unit 4 Amazing Science Topic 1 When was it invented ?Section A English is widely spoken throughout the world.have a talkWhy is English important?Because…English is used in many different fields.Spaceship V was sent into space in 2003. Many spaceships are sent into space by China. be+ done 一般现在时态被动语态was/were + done
一般过去时态被动语态spaceship 宇宙飞船 is spoken byShe speaks Chinese. is spoken by He speaks English.EnglishEnglish.Hehim.ChineseChinese.Sheher. 被动语态(Passive Voice ) be + done spokewasspokewasWorkers built these tall buildings last year.These tall buildings last year by workers. were builtJane invited her classmates to the party last week.Jane'classmates to the party by her last week.were invited一般过去时的被动语态 (The past passive voice)
结构:助动词(was/were)+及物动词的过去分词
主语+was /were+vt.-ed
E.g. Jane was allowed to play computer games last night.

Let’s sum up together. allow v. 允许
allow sb. to do sth.
允许某人做某事
1.Many people used computers. Computers _____ ________by _______ ______.2.The workers planted trees in the garden. Trees _____ _______ in the garden ____ the workers.were usedmany peoplewere plantedbyCan you try ？3.Lots of foreigners enjoyed Beijing Opera.Beijing Opera_______________________________. was enjoyed by lots of foreigners
4.Many visitors visited the Great Wall.The Great Wall_________________________was visited by many visitors.Change the following sentences into passive voice.rocket火箭 What’s it made of?
It’s made of … .
be made of 由某种物质做成(看得出原材料，物理过程)be made from 由某种物质制成(看不出原材料，化学过程)
This cup is made of paper.The wine is made from grapes.—What’s it made of?
—It’s made of .
金属metal—What’s it used for?
—It’s used forsending satellitesor spaceships into space. be used for…被用来做…e.g. 笔被用来写字。
Pens are used for writing.satellite卫星A:What’s the lock made of?
B: It’s made of metal.
A: What’s it used for?
B: It’s used for locking the door. lock n.锁 v.（用锁）锁上，被锁住
paper/woodA: What’s the paper made from?
B: It’s made from wood.
A: What’s it used for?
B: It’s used for writing on.Follow the examples to make up similar conversations.computer desk /woodchopsticks/bamboosweater /cottonwatch/metalPair workA:What’s it made of?
B: It’s made of …
A: What’s it used for?
B: It’s used for… A: What’s the … made from?
B: It’s made from ….
A: What’s it used for?
B: It’s used for …1. Why did Kankang ask Jane not to spend too much time on computer games ? Because it’s bad for her health if she spends too much time on them.2. What’s a rocket used for?
It’s used for sending satellites or spaceships into space .
3. Who taught Kangkang some knowledge about spaceships?
Mr. Brown.
4. What’s Kangkang’s dream?
He wishes he could go into space some day. some day----某一天，总有一天(将来)
e.g. I wish I could have my own house some day.I hope my dream will come true . come true----变成真的,实现Finish the following sentences.
1.My mother allowed me to use her cellphone.(改为被动语态)
I _____ ______ _____ use my mother’s cellphone.
2.A rocket is used for sending satellites and spaceships.
(就画线部分提问)
____ ___ a rocket ___ ___?
3.Our textbooks are made ____ paper while paper is made ____ wood. (of/from)

4. Your dream will come true ____ ____ (某一天）.was allowed to What isused forExercisesoffromsome day 1.Some words: lock, rocket, metal, satellite,
spaceship
2. Some phrases: be made of, be made from, be used for, some day, come true
3. Some sentences:
What’s it made of/from? It’s made of/from ….
What’s it used for? It’s used for ….
I wish I could go into space some day.
I hope your dream will come true.
Use the past passive voice.
was/were + done

SummaryWe learn:We can:HomeworkRead 1a.
Memorize the useful expressions and key sentences that we learn today.
Make some sentences using the past passive voice.Thank You !computer desk /woodchopsticks/bamboosweater /cottonwatch/metalspaceship 宇宙飞船rocket火箭 satellite卫星lock 锁 paper/wood