外研版（2024）八年级下册（2024））Understanding ideas教学ppt课件

这是一份外研版（2024）八年级下册（2024））Understanding ideas教学ppt课件，共34页。PPT课件主要包含了Contents，语言能力，思维品质，学习能力，文化意识，教学重点，教学难点，教学重难点，northern，unknown等内容，欢迎下载使用。
掌握 that/if/whether 引导的宾语从句结构、陈述语序与时态呼应，能识别并理解自然科普文本中的相关句型。准确选用引导词，正确区分 if/whether 用法（如 r nt / 介词后），完成句型转换与语法填空，正确率达 85% 以上。结合自然主题（恐龙、琥珀、火星生命等），用宾语从句口头转述、书面表达观点与疑问，做到语法准确、表达连贯。
通过例句对比与规则归纳，分析宾语从句的逻辑结构，形成 “主句 — 引导词 — 从句” 的句法逻辑，提升语法分析与归纳能力。借助宾语从句表达科学推测、质疑与结论，学会用 “确定 / 不确定” 的语言逻辑梳理自然发现，培养严谨的科学思维。辨析 that/if/whether 功能差异，判断语境选择合适引导词，提升逻辑判断与语境适配的思维准确性。
运用 “例句观察 — 规则总结 — 分层练习” 的语法学习策略，自主梳理宾语从句用法，形成结构化语法知识体系。借助教材例句、思维导图与错题本，主动巩固易错点（语序、时态、if/whether），提升自主纠错与反思能力。小组合作完成自然主题造句与写作，在交流中互相修正语法错误，发展合作学习与语言互助能力。
理解中外科学家探索自然、求证未知的精神，通过宾语从句学习其表达观点与疑问的方式，树立科学探究意识。感受英语在科普表达、学术论述中的功能，认识语法是传递科学思想的工具，形成 “语言服务于内容” 的文化认知。结合自然探索主题，增强尊重自然、保护自然的意识，学会用英语表达对自然奥秘的好奇与敬畏。
掌握 that/if/whether 引导宾语从句的基本结构、陈述语序，理解引导词含义与功能差异。熟练运用 that（陈述事实）、if/whether（表疑问），结合自然主题进行正确造句与句型转换。落实宾语从句时态呼应规则（主现从不限、主过从过），在语境中准确使用，提升语法准确性。
克服疑问语序变陈述语序的思维定势，避免在 if/whether 从句中误用助动词（如 d/can）。精准区分 if/whether 适用场景（r nt / 介词后 / 不定式前 用 whether），减少语境误用。将宾语从句自然融入自然探索话题的口语与写作，做到语法正确、内容连贯、逻辑清晰。
Cmplete the sentences based n what yu have learned.
The part f the cuntry is very cld in winter. (nrth)There are still many secrets in nature. (knw)Different peple have different abut life. (belief)We shuld understand the imprtance f nature. (full)We want t the secrets f the natural wrld. (lck)He is gd at articles abut lking int nature. (write)These pictures are drawn in different . (style)We can use different t study plants and animals. (methd)The frest is with birds and small animals. (live)Put frward yur clearly in the discussin. (argue)
Read the sentences frm the reading passage and summarise the grammar rules.
(a) Fr hundreds f years, peple believed that dinsaurs lked like huge lizards.(b) They can tell us whether dinsaurs had feathers, but that's nt all.
Nw find mre sentences with these structures in the reading passage.
Hwever, thanks t a piece f amber, scientists nw knw that this idea is wrng.But the find prves that it did 35 millin years ag.Research shws that they are a cmpletely new species.In the future, amber may als help us discver if ther species have changed ver time.Wh knws whether this piece f amber will tell us mre secrets?
一、定义在句子中起宾语作用的从句称为宾语从句。二、结构结构：主句 + 引导词 + 从句（必须用陈述语序）三、分类宾 语从句可以分为三类：that引导的宾语从句、whether / if 引导的宾语从句和疑问词引导的宾语从句。在本单元我们学习that和whether/if引导的宾语从句。例句：I think (that) he is right. 我认为他是对的。I want t knw if / whether he will cme.我想知道他是否会来。
（1）当谓语动词表示肯定的概念，如“希望”、“相信”、“知道”或“说”时，其后的宾语从句一般用that 引导。that没有词义，只具有语法功能，目的是使读者清楚后面的句子作前面动词的宾语，多数情况下可以省略。例句：I hpe (that) yu will cme t my birth day party. 我希望你能来参加我的生日聚会。I believe (that) we shall becme gd friends. 我相信我们会成为好朋友。注意：并非所有的动词后面都可接tat 引导的赛语从句。常接 that 引导的宾语从句的谓语动词有 believe, expect, explain, feel, hear, hpe, knw, imagine, prefer, prmise, reprt, say, see, tell, think, understand,warn, wish等。
（2）主句是“系动词+形容词”构成的系表结构时，常接that 引导的宾语从句。这类形容词多表示感情，如happy, srry, afraid, glad, sure 等。例句：I'm glad (that) yu are cming here n hliday. 我很高兴你要来这里度假。I'm sure (that) yu'll like it. 我相信你会喜欢它。拓展：引导词that用于下列情况时不可省略：①当主从句之间有插入语时。例句：It says, n the card, that it is made in China. 卡片上说，它产于中国。②当宾语从句中含有主从复合句时。例句：I'm afraid that if yu've lst it, yu must pay fr it. 恐怕如果你弄丢了它，你必须赔偿。
③当宾语从句是双宾语中的直接宾语时。例句：I can't tell him that his father died. 我不能告诉他他的父亲去世了。④当两个或多个that引导的宾语从句由并列连词连接时，除第一个从句中的that可以省略外，其余从句中的 that 都不可以省略。例句：He said (that) the film was very interesting and that he enjyed seeing it very much. 他说那部电影很有趣，他非常喜欢看。We all knw (that) he wrks hard and that he never gives up.我们都知道他学习努力，而且从不放弃。
whether/if 引导宾语从句时，意为“是否”，表达一个不确定的概念，常放在ask, wnder, knw, find ut 等词（组）后面。whether/if在从句中不充当句子成分但不能省略。例句：I wnder whether/if he can help me. 我想知道他是否能帮我。She asked whether/if I had finished my hmewrk. 她问我是否已经完成作业。D yu knw whether/if it will rain tmrrw? 你知道明天是否会下雨吗？Please find ut whether/if the meeting has been put ff. 请查明会议是否已经推迟。拓展：whether和if一般情况下可以互换使用，但在下列情况下只能使用whether，不能使用if。
①引导的从句作介词的宾语时例句：I am interested in whether he will agree. 我对他是否会同意很感兴趣。It depends n whether we have enugh time. 这取决于我们是否有足够的时间。②直接与r nt连用时例句：I dn't knw whether r nt he will cme. 我不知道他是否会来。We haven't decided whether r nt t hld the sprts meeting. 我们还没决定是否举办运动会。③后面直接跟带 t的不定式时例句：Mike didn't knw whether t g t Australia. 迈克不知道是否要去澳大利亚。注意：宾语从句无论由什么词引导，都要用陈述句语序。
I think ______ he is a gd student.I dn't knw ___________ he will cme tmrrw.She asked ___________ I liked English.We are talking abut ________ we can finish it n time.He didn't knw ________ t stay r leave.I wnder ___________ it is ging t rain.Please tell me ______ yu are right.I'm nt sure ________ r nt he can help us.He said ______ he was late and ______ he was srry.D yu knw ___________ she has a brther?
whether / if
Cnnect the sentences with that, if r whether.
1 Is there life in uter space? Scientists aren't sure.2 “I want t be a scientist and study plants,” Jhn tld his parents.3 Is Mr Brwn interested in insects r birds? Emily wants t knw.
Scientists aren't sure whether /if there is life in uter space.
Jhn tld his parents that he wanted t be a scientist and studyplants.
Emily wants t knw whether Mr Brwn is interested in insectsr birds.
Cmplete the messages with that, if r whether.
MESSAGE BOARDHell,I went t yur museum tday. Yu missed Plut in the mdel f the slar system. There were nly eight planets in it. I dn't knw 1 this is a mistake. Dear Daniel,In the past, peple thught 2 there were nine planets. Hwever, questins
were raised abut 3 Plut was a planet. In 2006, scientists agreed4 a true planet:1. mves arund the sun2. is rund (r nearly rund)3. can clear things in its wayPlut desn't meet the third pint. Therefre, we nw believe 5 there are eight true planets in the slar system. That's why Plut isn't part f the mdel. Please let me knw 6 yu need mre infrmatin.
Wrk in pairs. Lk at the ntice and write a shrt passage abut explring nature. Use the wrds and expressins frm the reading passage and the Useful expressins t help yu.
Write fr us!The tpic fr ur magazine next mnth will be explring nature, and we wuld like YOU t write abut it! Please write a shrt passage abut discveries in nature explratin. Yur passage shuld describe:what the discvery iswh made the discverywhat's amazing abut itwhat yu can learn frm itPlease uplad yur passage by 30 June.
Useful expressinsFr hundreds f years, peple believed made an amazing , ... fund / realised / saw that...
Sme whales make lng, lw sunds during swimming. Peple ften wnder if the whales are singing. By watching and listening carefully, scientists have discvered that...
Uplad yur passage
It prves teaches us shws that...
The Mysterius Sngs f WhalesSme whales make lng, lw sunds during swimming. Peple ften wnder if the whales are singing. By watching and listening carefully, scientists have discvered that these sunds are like a special “language” fr whales.Scientists discvered this secret. They used special underwater micrphnes t listen t whales. They fund that male humpback whales make lng, beautiful sunds. These sunds can travel very far, acrss thusands f miles f the cean! An amazing thing is that whales change their sunds ver time, just like making new sngs. These sunds help whales find mates and wrk tgether t hunt.We can learn tw things frm this. First, every animal has its wn way t talk. Just as we use wrds, whales use sunds. Secnd, it's imprtant t be curius and bserve nature. If scientists didn't study hard, we wuldn't knw abut the amazing “sngs” f whales. S, always stay curius and explre the wrld arund yu!
bard /bɔːd/ n. 布告牌，公告牌
例句：There is a ntice n the bard. 布告牌上有一则通知。ntice bard 布告牌，公告栏例句：Yu can find the infrmatin n the ntice bard. 你可以在公告栏上找到这个信息。n the bard 在布告牌上例句：The plan is put up n the bard. 这个计划被张贴在布告牌上。schl bard 学校布告栏例句：New rules are shwn n the schl bard. 新规定展示在学校布告栏上。bard v. 上（船 / 车 / 飞机）；寄宿例句：We bard the train at 8 'clck. 我们八点上火车。
barding n. 寄宿；登机例句：He studies in a barding schl. 他在一所寄宿学校上学。易混辨析及例句：bard / ntice / psterbard 指布告牌、公告板这个物体本身例句：The bard is next t the dr. 布告牌在门旁边。ntice 指布告、通知（写在纸上的内容）例句：There is a ntice abut the trip. 有一则关于旅行的通知。pster 指海报，通常色彩鲜艳、用于宣传例句：We made a pster fr the activity. 我们为这次活动制作了一张海报。
mdel /ˈmɒdl/ n. 模型
例句：He made a mdel f a spaceship. 他做了一个宇宙飞船模型。a mdel plane / ship / car 飞机 / 轮船 / 汽车模型例句：The by is playing with a mdel plane. 这个男孩在玩飞机模型。a mdel student 模范学生，三好学生例句：Lucy is a mdel student in ur class. 露西是我们班的模范学生。make a mdel 制作模型例句：We will make a mdel in the science class. 我们要在科学课上做模型。mdel village / park 模型村 / 微型公园例句：There is a mdel village in the museum. 博物馆里有一个微型村庄。mdel (v.) /ˈmɒdl/ 模拟；做模特；模仿
例句：The teacher mdelled the experiment fr us. 老师为我们示范了这个实验。mdelling (BrE) /mdeling (AmE) n. 建模；模特行业例句：He is gd at mdelling natural systems. 他擅长给自然系统建模。mdel (adj.) 模范的例句：She is a mdel wrker. 她是一名模范工作者。易混辨析：mdel vs. example vs. cpymdel 侧重：模型、模范、原型，可模仿、可参照例如：a mdel f the Earth 地球模型；a mdel student 模范学生example 侧重：例子、榜样，用来举例或学习例句：Please give me an example. 请给我举个例子。cpy 侧重：复制品、副本，原样照搬例句：This is just a cpy f the painting. 这只是这幅画的复制品。
clear /klɪə(r)/ v. 清除，清理；adj. 清楚的，清晰的
例句：We shuld clear the rubbish in the park. 我们应该清理公园里的垃圾。The instructins are very clear. 说明非常清楚。clear up 清理；整理；（天气）放晴例句：Let's clear up the classrm. 我们把教室打扫一下吧。clear away 收拾，把…… 清理走例句：Please clear away the plates after dinner. 晚饭后请把盘子收走。clear ut 清空，打扫干净例句：We need t clear ut the ld bxes. 我们需要把旧箱子清理掉。clear ne's mind 理清思路例句：I walked utside t clear my mind. 我出去走了走，理清思路。
clearly /ˈklɪəli/adv. 清楚地，清晰地例句：Please speak clearly. 请说清楚一点。clearing n. （森林中的）空地例句：They built a fire in a clearing. 他们在一片空地上生了火。易混辨析：clear / clean / tidyclear（v.）侧重把东西移走、清除掉，使空间空出来例句：Clear the desk. 把桌子上的东西清走。clean（v.）侧重打扫、擦洗，使变干净例句：Clean the blackbard. 擦黑板。tidy（v.）侧重整理，使整齐有序例句：Tidy yur rm. 整理你的房间。
uplad /ʌpˈləʊd/ v. 上载，上传
例句：Yu can uplad yur pictures t the website. 你可以把照片上传到网站上。uplad sth t … 把…… 上传到……例句：Please uplad yur plan t the ntice bard. 请把你的计划上传到公告栏。uplad files / phts / vides 上传文件 / 照片 / 视频例句：She is uplading sme phts f nature. 她正在上传一些自然风景的照片。allw uplads 允许上传例句：The system allws uplads in Wrd and PDF. 系统允许上传 Wrd 和 PDF 格式文件。uplad n. 上传；上传的数据例句：The uplad was successful. 上传成功了。
uplader n. 上传者；上传工具例句：The uplader shared many beautiful pictures. 这位上传者分享了很多美图。dwnlad v./n. 下载（反义词）例句：Yu can dwnlad the mdel frm the website. 你可以从网站上下载这个模型。易混辨析：uplad vs. dwnlad vs. senduplad 上传：把本地内容传到网上 / 服务器例句：Yu can uplad yur hmewrk nline. 你可以把作业上传到网上。dwnlad 下载：从网上 / 服务器保存到本地例句：Students can dwnlad the reading materials. 学生可以下载阅读材料。send 发送：侧重传给某人，不一定上网例句：Please send me yur plan by email. 请用邮件把你的计划发给我。