初中英语人教版（2024）九年级上册（2024）3a-3c教学课件ppt

这是一份初中英语人教版（2024）九年级上册（2024）3a-3c教学课件ppt，共25页。PPT课件主要包含了Lead in，Summary，Exercises，Homework等内容，欢迎下载使用。
Talk abut them.
What are these inventins? Wh invented the plane? Hw did planes change ur life?
sticky ntes
papermaking
3D printing
Watch a vide and find ut hw the plane was invented?
Pre-writing
Read the text and cmplete the chart.
Orville Wright and Wilbur Wright (the Wright brthers)
They wanted t fly like birds.
Get gliders int the air; cntrl flying gliders
Learned flying rules frm birds, added an engine t gliders
In December 1903
Make travel easier and faster; shrten the distance between cuntries
开头段：what, wh, why
中间段：hw ＆what challenges
结尾段：what effects
While-writing
Chse a great inventin yu are interested in. D sme research and make ntes abut it.
_________was invented by ____________in _______________.It was invented because ________________________________.It was made f / frm __________________________________.The inventr had difficulties in ___________________________.The inventin was respnsible fr /led t ___________________ ____________________________________________________.
+ding 在做某事方面遇到困难
Fr example:
Sticky ntes
Spencer Silver and Arthur Fry
peple needed small marks t mark pages in sngbks.
special sticky paper
making strng glue at first
mre cnvenient study and ffice life.
Write abut the inventin yu have chsen using the infrmatin frm 3b.
中间段：hw ＆what challenges
如果有困难，可以参考下面的模板：
Pst-writing
Pair wrk t evaluate yur writing.
Example: Sticky ntes is a great everyday inventin. It was invented by tw scientists in 1968. At first, Silver failed t make strng glue, which brught weak sticky glue. Later, Fry fund its new use t mark his sngbk. The inventrs had difficulties in finding prper use fr the glue. Finally, this small inventin resulted in huge prductin. Tday, sticky ntes are widely used all ver the wrld and gradually becme necessary fr students and wrkers.
Read and cmpare.
Language pints
be lking t d sth. 试图找到做某事的方法
核心用法：多用于书面表达，描述人当下的目的、打算，课文原句体现发明者最初的初衷Hwever, the inventrs were nt lking t change the wrld. 然而，发明者原本并不打算改变世界。He is lking t invent a new kind f small printer. 他打算发明一款新型小型打印机。
1. The Wright brthers were nt lking ________ (make) mney at first.2. Our cmpany lks __________ (prduce) mre new prducts next year.3. She is lking ________ (cntrl) the small plane well.
Hw t intrduce an inventin.
现如今许许多多发明深刻改变了人们的生活，请你介绍一项伟大发明——the bicycle（自行车）。 写作要求： 1. 文章分为三段，依次介绍发明基本信息、研发过程与遇到的困难、发明带来的影响； 2. 必须用到本单元重点短语：be invented by, have difficulties in ding, lead t, be lking t d；能够恰当使用prduce / prduct / prductin； 3. 词数：80~110词，语句通顺，语法正确，不得出现真实人名、校名。
完成本课重点单词（如 inventr, glider, engine, flight, cmmunicatin, challenge, slve等）的抄写与默写，并完成课本3a的阅读填表任务。
从本课3a的阅读短文中，找出所有被动语态的句子，按“一般过去时被动”和“情态动词被动”两类分别抄写至少2个例句，并总结一般过去时被动语态的结构规律。
选择一项你感兴趣的发明（如飞机、电话、电脑等），用英文写一段60-80词的短文，介绍其发明者、发明时间、遇到的挑战及影响，其中至少使用3个一般过去时被动语态句子。