初中英语冀教版（2024）八年级下册（2024）Lesson 5 Refrigerator timeline课前预习课件ppt

这是一份初中英语冀教版（2024）八年级下册（2024）Lesson 5 Refrigerator timeline课前预习课件ppt，共25页。PPT课件主要包含了Contents ，学习目标， Lead in，New Lesson， Exercise，Summary，Homework等内容，欢迎下载使用。
1. Lead in
2. New lessn
5. Summary
3. Language pints
4. Exercise
6. Hmewrk
能够从发明的时间线中找出关键节点信息（如时间、人物/发明者、事件与变化），完成理解任务，并用时间顺序梳理“发明-改进-普及”的发展脉络，形成对技术演变的整体认识；
能够在语境中理解并运用与发明史相关的表达，用简单句表达发明带来的变化与价值（如功能、普及、节能等影响），提高信息表达的准确性与条理性；
能够小组协作选择一种发明，通过查阅资料筛选信息，制作出结构清晰、图文结合的时间线作品，并进行口头介绍与分享，做到表达清楚、突出重点，还能对同伴的作品做出简单反馈。
通过本节课学习，学生能够：
The refrigeratr is very imprtant in ur daily life.
/rɪ＇frɪdʒəreɪtə/=(fridge) 冰箱
Read the timeline and tick the inventr f the first refrigeratr.□ William Cullen □ Oliver Evans □
Read the timeline again and circle the crrect answers. A When did refrigeratrs becme ppular in sme cuntries? a.In the 1920s b.In the 1800s. c.in the 1980sB What was true abut using refrigeratrs in the 1990s? a.A refrigeratr was cnsidered a luxury running cst f a refrigeratr is s high that n ne culd affrd ne. c.Energy-efficient refrigeratrs had becme the new nrmal
Language pints
1. Ancient China, Greece, and Rme used ice r snw t preserve fd by freezing r chilling it，古代中国、希腊和罗马用冰或雪通过冷冻或冷藏来保存食物。 过去式为frze;过去分词为frzenfreeze /friːz/ v.（使）冻结；结冰既可作及物动词，又可作不及物动词。Water freezes at 0°C.水在O摄氏度时结冰。（不及物动词）The cld weather frze the grund.寒冷的天气使地面都冻硬了。（及物动词）
拓展(1)freeze作动词的其他含义及用法：停住不动；呆住I frze and listened; smene was in myapartment.我僵在原地仔细听：有人在我的公寓里。I frze with hrrr as the dr slwlypened.门慢慢开启时我吓呆了。冻结（资金、银行账户等） The curt frze their assets.法院冻结了他们的资产。(2)frzen[形容词]冷冻的；冷藏的；冻僵，极冷·Yu can use fresh r frzen fish.你可以使用新鲜或冷冻的鱼。My hands are frzen.我的手冻僵了。
2 Refrigeratrs became mre energy-saving.冰箱变得更加节能。 energy /ˈenədʒi/ n. 能量；能源作不可数名词。能源 Using lcal clean energy plays an imprtant rlein Xingan New Area' s prgress.利用本地清洁能源在雄安新区的发展进程中发挥着重要作用。能量 Try t be bathed in sunshine n sunnymrnings——sunlight gives yu energy fr the day!试着在晴朗的早晨沐浴在阳光里———阳光会为你的一天提供能量！
(2) energetic[形容词]精力充沛的；充满活力的I enjy jgging in the mrning because it helps me stay energetic thrughut the day。我喜欢在早上慢跑，因为这能让我一整天都保持精力充沛。
Wrk in pairs Make a timeline fr an inventin.
Hell everyne. Tday I'd like t intrduce an inventin that has changed ur lives a lt - the phne.First,in 1876,the telephne was invented by Alexander Graham Bell.Fr the first time, peple culd talk t smene far away withut being face t face.Then in 1878, Thmas Edisn imprved the telephne, s vices became clearer and thetelephne was easier t use.Next,the phne became mbile.In 1973,the first mbile phne call was made by Martin Cper frm Mtrla.This was a big step frward because peple culd cmmunicate while mving.Later,in 1992,the first text message was sent by Neil Papwrth.After that,peple culd send quick messages instead f making a call every time.
In 2007,the smartphne was intrduced by Apple,and Steve Jbs played an imprtant rle in this change,Phnes were nt nly fr calling anymre.We culd take phts,listen t music,and g nline.Since the 2010s,apps and mbile internet have been widely used,s phnes have becme a daily tl fr studying, shpping, and even paying.In my pinin,the phne is ne f the greatest inventins.It helps us stay cnnected and makes ur lives mre cnvenient.Thank yu fr listening.
①ancient/'eɪnʃənt/ adj.古代的；古老的②preserve/prɪ'zɜːv/ v.保存③freeze/friːz/ v.（使）冻结；结冰【拓】frzen/'frəʊzn/ adj.冷冻的，冷藏的④chill/tʃɪl/ v.（使）冷却；（被）冷藏⑤experiment/ɪk'sperɪmənt/ n.实验；试验 d an experiment做实验⑥artificial/ˌɑːtɪ'fɪʃl/ adj.人工的，人造的⑦refrigeratr/rɪ'frɪdʒəreɪtə(r)/ n.（=fridge）冰箱⑧cmpartment /kəm'pɑːtmənt/ n.（家具或设备等的）分隔间，隔层⑨energy-saving节能的energy /'enədʒi/ n. 能量；能源【拓】energetic/ˌenə'dʒetɪk/ adj.精力充沛的，充满活力的⑩cncisely /kən'saɪsli/ adv.简明地；简练地 【拓】clearly and cncisely言简意赅
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