初中Unit 1 When was it invented? Section B教学课件ppt

这是一份初中Unit 1 When was it invented? Section B教学课件ppt，共33页。PPT课件主要包含了Contents等内容，欢迎下载使用。
Pre-writing
While-writing
Pst-writing
Language gals
培养学生热爱科学、勇于探索的精神。
1.掌握常用词汇及句型: nearly,decide n, cme up with 等;2.用英语介绍某一项发明。
通过了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界，培养学生的创造精神。
1.熟练掌握被动语态用法； 2.学会使用被动语态介绍某项发明。
What inventins have we learned ?
Hw t intrduce them ?
When was it invented?
Wh was it invented by?
It was invented in/by…
What is it/are they used fr?
Why are they invented by?
They are used fr…
Hw was it invented?
It was invented by day,...
What are the influences?
Hw t describe an inventin?
Sme interesting inventins.
D yu think they are useful? What have yu invented?
Think f smething that yu d nt like t d. Then think f an inventin that culd help yu. Make ntes.
·Prblem: __________________________________________·New inventin: ___________________________________·What it is used fr: ________________________________
a special pen
quickly taking ntes in class
taking ntes in class
Culd yu tell me mre abut it?
本单元的话题是“Inventin (发明)”。写作内容通常要求根据图表或文字提示介绍发明物的相关情况（历史、用途、特点等），或者针对生活中的实际情况，提出自己的发明建议。写作时，要求学生能够运用本单元的语言知识，尤其是一般过去时的被动语态来组织语言。
Hw t intrduce an inventin?
Imagine yu are a business persn. Write a descriptin f yur new inventin. Try t sell the inventin t the class.
This special pen was invented by Liu Jie. He invent it because he want t take ntes quickly in class. It has three clrs and is used fr taking ntes quickly.It is very useful if yu have a lt t write dwn. The pen can stre a list f cmmn wrds that yu will use. When yu are writing, yu just need t write the shrt frms with the pen, press a buttn n the pen the related wrds will appear. Besides, it can als turn ur vice int actual wrds. Withut dubt I like the special pen because I can take ntes quickly in class nw. Dn’t yu think it’s cl?
Sample writing
My inventin: Super Shes
① 题材：本文是一篇材料作文，写自己的一项发明；② 时态：时态为“一般现在时”；③ 提示：根据所给提示完成写作，不能遗漏信息，包括想要发明的东西、能解决的问题以及发明的原因等。[写作步骤]第一步，介绍想要发明的是什么； 第二步，具体介绍想要发明的原因；第三步，介绍发明物能解决的问题。 第四步， 总结发明物的优点。[亮点词汇]① thrw away扔掉 ② be bad fr对…有害 ③ nt nly…but als 不但…而且…[高分句型]① If yu walk t much, there will be a massage functin at the bttm f the shes t help yu relax yur feet.（if引导的条件状语从句）② This kind f shes is made f a special material, which can grw with yur feet and always fit yur feet.（which引导的非限制性定语从句）
Peer -editing
Gd Structure
Crrect grammar/spelling
Gd sentences
Linking wrds
Beautiful writing
Exchange yur articles, help each ther crrect them.
Play a game
4位同学扮演“推销商”上讲台向同学们“推销”自己的发明，台下的每位同学都举手投票，得票最多的“推销商”获胜。（注意：在“推销”发明时请全程使用英语。）
Fur students act as "salesman" n the platfrm t "sell" their inventin.The audience f each student raise their hands t vte, and the "salespersn" with the mst vtes will win.
The inventin that can be accepted is useful and meaningful.
invent dubt mentin website all f a sudden
It is ften difficult t decide n the inventr f certain inventins. This is because smetimes a few peple may _________ things which are nearly the same. It’s hard t tell wh came up with the idea first. Sme inventins can als lead t ther inventins ________________. S sme peple __________ whether the inventr came up with the idea himself r herself. They think that the inventr used smene else’s idea t create his r her inventin. That is why bks r ___________ usually _______________ mre than ne inventr when giving infrmatin abut inventins.
Self Check
all f a sudden
Cmplete the passage with the crrect frms f the wrds in the bx.
1. Smene stle my watch. My watch was stlen (by smene) 2. They used five eggs t make this big cake. Five eggs were used (by them) t make this big cake 3. When did they invent the persnal cmputer? When was the persnal cmputer invented? 4. They asked us nt t run in the hallway. We were asked nt t run in the hallway (by them) 5. Smene tk the vide back t the stre. The vide was taken back t the stre (by smene)
Rewrite these sentences using the passive vice.
Level B：Recite the imprtant sentences in the passage.Level A：Write a shrt passage t intrduce the inventin accrding t the infrmatin in Self Check 3.