【优质公开课】Unit5 Power of ideas Section A 3a-3d课件2026—2027学年人教版九年级英语上册

这是一份初中英语人教版（2024）九年级上册（2024）3a-3d试讲课ppt课件，共31页。PPT课件主要包含了Lead-in， ，Free-talk，the radio，In 1901，Pair work，Show time，The radio，name，importance等内容，欢迎下载使用。
By the end f this lessn, we will be able t:1. use key sentence patterns t ask and express pinins abut inventins.2. identify key infrmatin frm a cnversatin abut the radi and imitate sentence stress in listening and speaking.3. describe an inventin and the changes it brught by creating and presenting a simple mind map.
Learning Objectives
There are s many great inventins in the wrld.Nw let’s enjy a vide t knw abut them.
Brainstrming
What d yu think is a great inventin?
I think ... is a great inventin.
What d yu think is the mst useful inventin?
I think ... is the mst useful inventin.
Fu Xing and Peter are talking abut the mst useful inventins.
1.What des Peter think is the mst useful inventin f all time?2.Why des Peter think the radi is useful?3.Wh invented the radi?4.When was a radi message first sent acrss the Atlantic Ocean?5.What effect did the radi have n music?
The radi made it much easier fr peple t enjy music frm artists arund the wrld.
It was first sent acrss the Atlantic Ocean in 1901.
An Italian inventr called Guglielm Marcni.
Because befre the radi was invented, infrmatin travelled very slwly. The radi made the wrld much smaller and allwed news t spread arund the wrld in secnds.
He thinks the radi is the mst useful inventin f all time.
Read the cnversatin carefully and answer the questins.
Read the cnversatin. What des Peter think is the mst useful inventin f all time?
Fu Xing: What d yu think is the mst useful inventin f all time, Peter? Peter: It has t be the radi.Fu Xing: The radi? Why? Peter: Befre the radi was invented, infrmatin travelled very slwly. The wrld was made much smaller by the radi. Suddenly, news culd be spread arund the wrld in secnds.Fu Xing: Right. Wh was the inventr? Peter: An Italian inventr called Guglielm Marcni. He develped the idea in the 1890s. In 1901, a radi message was sent acrss the Atlantic Ocean fr the first time.Fu Xing: Ww! That was quite a distance at that time. Peter: Yeah. And because f the radi, sme ther imprtant inventins were develped as well.Fu Xing: Like the televisin? Peter: That's right. It als had a big effect n music. The radi made it much easier fr peple t enjy music frm artists arund the wrld.
Read again and cmplete the chart.
Guglielm Marcni.
The radi made the wrld much smaller.Sme ther imprtant inventins were develped as well.The radi als made it much easier fr peple t enjy music frm artists arund the wrld.
Listen t the cnversatin. Pay attentin t hw the key infrmatin is stressed. Then rle-play the cnversatin.
Fu Xing: What d yu think is the mst useful inventin f all time, Peter? Peter: It has t be the radi.Fu Xing: The radi? Why? Peter: Befre the radi was invented, infrmatin travelled very slwly. The wrld was made much smaller by the radi. Suddenly, news culd be spread arund the wrld in secnds.Fu Xing: Right. Wh was the inventr? Peter: An Italian inventr called Guglielm Marcni. He develped the idea in the 1890s. In 1901, a radi message was sent acrss the Atlantic Ocean fr the first time.Fu Xing: Ww! That was quite a distance at that time. Peter: Yeah. And because f the radi, sme ther imprtant inventins were develped as well.Fu Xing: Like the televisin? Peter: That's right. It als had a big effect n music. The radi made it much easier fr peple t enjy music frm artists arund the wrld.
D yu knw what stress means?
It means we speak sme wrds mre ludly and clearly t shw they are imprtant.
Practise the cnversatin and pay attentin t the key infrmatin that is stressed and then rle-play it.
What inventin did Peter chse?
Why did he think it’s useful?
Because it spread news fast, and made the wrld smaller.
What details did he mentin?
Inventr: MarcniTime: 1890s, 1901Influences: Helped TV develp, prmted music spread
Chse anther inventin that yu think is the mst imprtant and make a mind map abut it. Then describe it t a partner.
The inventin
inventr & time
the smartphne
befre it: basic mbile phnes nly fr calls/messages
key cntributr: IBM(invented first smartphne) in 1993
ppularizatin: in 2007
life: cnvenience
after it: integrated multiple functins 多功能
entertainment: games, music, vides...
study: nline curses, educatinal apps, e-bks
veruse: causes eye strain, less face t face cmmunicatin
Chse an inventin and make a mind map abut it.
Describe it t a partner.
I think the mst imprtant inventin is the smartphne. It is the mst useful because befre it was invented, we culd nly make calls with mbile phnes. The smartphne has made it easier fr us t shp nline and take nline classes. The first smartphne was invented by IBM in 1993, and it became ppular in 2007. It als has a big effect n hw we cmmunicate—we can have vide calls with relatives far away.
The greatest inventin is nt a machine, but the human mind that dreams it.
Language pints
1.What d yu think is the mst useful inventin f all time? 搭配：the mst useful inventin 最有用的发明imprtant inventins 重要的发明the inventin f sth. 某物的发明inventin为可数名词，复数形式 inventins；其动词形式为 invent (发明），发明者 inventr (发明家)invent v.—inventin n. —inventr ：The inventin f the smartphne has changed peple's daily life greatly.智能手机的发明极大地改变了人们的日常生活。
2.The wrld was made much smaller by the radi.无线电使世界变得小得多。被动语态:be made + 形容词比较级，强调 “世界变小” 的结果而非动作执行者；much smaller表 “小得多”，much修饰形容词比较级。E.g.：High-speed trains have made the distance between cities much shrter.高铁使城市间的距离变得短得多。
3.Suddenly, news culd be spread arund the wrld in secnds.spread为不规则动词，过去式和过去分词均为 “spread”；此处用被动语态 “be spread”，表“被传播”。搭配：spread arund the wrld（传遍世界）、 spread news/infrmatin（传播新闻 / 信息）E.g.：The gd news was spread quickly in ur schl. 这个好消息在我们学校迅速传播开来。“in + 时间段”表“在…… 时间内”，强调动作完成的快速性；类似短语有: in minutes 几分钟内、 in hurs 几小时内 E.g.：The fire was put ut by firefighters in minutes. 消防员几分钟内就扑灭了火。
4.An Italian inventr called Guglielm Marcni.一位意大利发明家名叫古列尔莫・马科尼。Italy n. 意大利(国家)Italian n.&adj. 意大利人/意大利语,意大利的E.g.: He cmes frm Italy. He is an Italian. He likes Italian fd and he speaks Italian.called 此处为过去分词作后置定语，表 “名叫…… 的”，修饰 “inventr”。可以和named 互换。E.g.：A British scientist called Isaac Newtn discvered the law f gravity.一位名叫艾萨克・牛顿的英国科学家发现了万有引力定律。
5.He develped the idea in the 1890s.他在 19 世纪 90 年代提出无线电的研发思路。develped the idea 意为 “形成 / 提出思路”，区别于 invented the prduct（发明产品）。“in the + 整十年份复数”是固定时间表达，表 “在…… 世纪…… 年代”，如 “the 1980s” 指 “20 世纪 80 年代”。E.g.：Many great wrks f literature were created in the 1920s.许多伟大的文学作品创作于 20 世纪 20 年代。
6.Ww! That was quite a distance at that time.distance既可数也不可数，表示具体一段距离可数,抽象概念不可数E.g.: It's a lng distance frm my hme t the cmpany. Distance makes the heart grw fnder. 距离产生美。(抽象概念)搭配：quite a distance 相当远的距离、the distance between A and B A 和 B 之间的距离、a lng/shrt distance 长 / 短距离
7.And because f the radi, sme ther imprtant inventins were develped as well. 无线电推动了其他重要发明,如电视的发展。because f 后接名词 / 名词短语，表 “因为……”，区别于 because+从句。E.g.：Because f the bad weather, we have t stay at hme. 因为天气原因我们只能待在家了。
8.And because f the radi, sme ther imprtant inventins were develped as well.
t adv.用于肯定句，放句末（前加逗号）;E.g.：I like English, t.我也喜欢英语。 als adv. 用于肯定句，位于be动词/助动词后，实义动词前;E.g.：She is als a student.她也是一名学生。 He als plays ftball.他也踢足球。 either adv. 用于否定句，放句末（前加逗号），表“也不”。E.g.：I dn’t like cffee, either.我也不喜欢咖啡。as well副词短语, 用于肯定句，放句末（不加逗号）。E.g.：They want t g t Beijing as well.他们也想去北京。
like 此处为介词，用于举例，后接名词/名词短语，放被列举名词后（无逗号），口语化，和such as用法相近，更随意。
9.Like the televisin?
拓展辨析:fr example（缩写 e.g.）后接句子，可放句首/句中/句末（逗号隔开），侧重“单个/少数典型例子”。E.g.：He likes sprts. Fr example, he plays basketball every day.such as后接名词/名词短语，放被列举名词后（无逗号），侧重“多个同类例子”。E.g.：She likes fruits such as apples, bananas and ranges.namely后接名词/名词短语，放被列举内容后（前面需用逗号），侧重“完全列举、明确指出”，语气较正式。E.g.：There are three clurs in the flag, namely red, white and blue.
10.It als had a big effect n music. The radi made it much easier fr peple t enjy music frm artists arund the wrld.无线电对音乐有重大影响，使人们更容易欣赏世界各地艺术家的音乐。effect n. 影响, 动词形式为 affect v. 影响，affect sth.，have an effect n 是固定搭配，表 “对…… 有影响”；“make it + 形容词 + fr sb. t d sth.”是固定句式，“it” 为形式宾语，真正宾语是后面的 “t d sth.”。E.g.：Online curses have a great effect n students' learning; they make it mre cnvenient fr students t study at hme.在线课程对学生的学习有很大影响，它们使学生在家学习更方便。
the mst useful inventin f all time
infrmatin travelled very slwly
was made much smaller
spread arund the wrld
an Italian inventr
in the 1890s
develped the idea
sent acrss the Atlantic Ocean fr the first time
quite a distance
had a big effect n
made it much easier fr peple t enjy music
music frm artists arund the wrld
一.补全句子1. The gd news ___ _____ ______ ____ ______（传遍世界）in a few days.2. Reading ______ ______ ______ ______ ______ ______（对我们有重大影响）.3. He ___ ______（完善了想法）and finally succeeded.
was spread arund the wrld
has a great effect n us
develped his idea
二.选词填空（从方框中选择合适的词填空，每词限用一次） acrss arund because by well 1. News culd be spread ______ the wrld in secnds with the radi.2. A radi message was sent ______ the Atlantic Ocean fr the first time in 1901.3. Sme ther imprtant inventins were develped ______ f the radi.4. The wrld was made much smaller ______ the radi.5. The televisin is als a useful inventin, and it influences ur lives as ______.
三.用词的正确形式填空1. The radi message was ______ (send) acrss the Atlantic Ocean in 1901.2. Guglielm Marcni was a great (invent) wh develped the radi.3. Infrmatin travelled very ______ (slw) befre the radi was invented.4. The radi has a big ______ (affect) n peple's daily lives.5. He (develpment) his idea fr many years befre succeeding.