一、教材內(nèi)容經(jīng)全國中小學(xué)教材審定委員會2004年初審查通過,人教育出版社出版的普通高中課程標(biāo)準(zhǔn)實驗教科書《物理必修①》,第三章第5節(jié)內(nèi)容“力的分解”。二、教學(xué)目標(biāo)1.知識與技能(1)理解分力的概念,理解力的分解是力的合成的逆運算,遵循平行四邊形定則。(2)初步掌握一般情況下力的分解要根據(jù)實際需要來確定分力的方向。(3)會用作圖法和直角三角形的知識求分力。(4)能區(qū)別矢量和標(biāo)量,知道三角形定則,了解三角形定則與平行四邊形定則的實質(zhì)是一樣的。2.過程與方法(1)進一步領(lǐng)會“等效替代”的思想方法。(2)通過探究嘗試發(fā)現(xiàn)問題、探索問題、解決問題能力。(3)掌握應(yīng)用數(shù)學(xué)知識解決物理問題的能力。3.情感態(tài)度與價值觀(1)通過猜測與探究享受成功的快樂。(2)感受物理就在身邊,有將物理知識應(yīng)用于生活和生產(chǎn)實驗的意識。三、教學(xué)重點、難點在具體問題中如何根據(jù)力的實際作用效果和平行四邊形定則進行力的分解。
(二)說學(xué)法指導(dǎo)把“學(xué)習(xí)的主動權(quán)還給學(xué)生”,倡導(dǎo)“自主、合作、探究”的學(xué)習(xí)方式,因而,我在教學(xué)過程中特別重視創(chuàng)造學(xué)生自主參與,合作交流的機會,充分利用學(xué)生已獲得的生活體驗,通過相關(guān)現(xiàn)象的再現(xiàn),激發(fā)學(xué)生主動參與,積極思考,分析現(xiàn)象背后的哲學(xué)理論依據(jù),幫助學(xué)生樹立批判精神和創(chuàng)新意識,從而增強教學(xué)效果,讓學(xué)生在自己思維的活躍中領(lǐng)會本節(jié)課的重點難點。(三)說教學(xué)手段:我運用多媒體輔助教學(xué),展示富有感染力的各種現(xiàn)象和場景,營造一個形象生動的課堂氣氛。三、說教學(xué)過程教學(xué)過程堅持"情境探究法",分為"導(dǎo)入新課——推進新課——走進生活"三個層次,環(huán)環(huán)相扣,逐步推進,幫助學(xué)生完成由感性認識到理性認識的飛躍。下面我重點簡述一下對教學(xué)過程的設(shè)計。
在這段教學(xué)中可以插入世界主要鐵礦、煤礦,以及我國主要的礦產(chǎn)基地、鋼鐵生產(chǎn)基地的相關(guān)內(nèi)容,不失為區(qū)域地理知識的很好補充和鞏固。那么從現(xiàn)狀來看我國的鋼鐵產(chǎn)業(yè)基地多數(shù)污染較為嚴重,可見工業(yè)區(qū)位的選擇同樣要顧及到環(huán)境的因素,由此引入下一部分的內(nèi)容。除了傳統(tǒng)意義上的工業(yè)區(qū)位因素外,環(huán)境、政策以及決策者的理念和心理等日益受到人們的關(guān)注。在這段文字的處理上,只需進行概念、道理上的陳述即可,重點要放在污染工業(yè)在城市中的布局這一知識點上。首先要了解什么工業(yè)會造成怎樣的污染,然后根據(jù)污染的類別分別講解不同的應(yīng)對方略,最后將配以適當(dāng)?shù)睦}以期提高學(xué)生的整體把握程度和綜合運用能力。最后將對本節(jié)內(nèi)容進行小結(jié),要在小結(jié)中闡述清楚本節(jié)課的兩大內(nèi)容:即工業(yè)的區(qū)位因素和工業(yè)區(qū)位的選擇。然后點明本節(jié)課的主要知識點、難點、重點。在時間允許的情況下可以適當(dāng)安排幾道有關(guān)主導(dǎo)產(chǎn)業(yè)和城市工業(yè)布局的例題加以練習(xí)。
本節(jié)課是新版教材人教A版普通高中課程標(biāo)準(zhǔn)實驗教科書數(shù)學(xué)必修1第四章第4.3.2節(jié)《對數(shù)的運算》。其核心是弄清楚對數(shù)的定義,掌握對數(shù)的運算性質(zhì),理解它的關(guān)鍵就是通過實例使學(xué)生認識對數(shù)式與指數(shù)式的關(guān)系,分析得出對數(shù)的概念及對數(shù)式與指數(shù)式的 互化,通過實例推導(dǎo)對數(shù)的運算性質(zhì)。由于它還與后續(xù)很多內(nèi)容,比如對數(shù)函數(shù)及其性質(zhì),這也是高考必考內(nèi)容之一,所以在本學(xué)科有著很重要的地位。解決重點的關(guān)鍵是抓住對數(shù)的概念、并讓學(xué)生掌握對數(shù)式與指數(shù)式的互化;通過實例推導(dǎo)對數(shù)的運算性質(zhì),讓學(xué)生準(zhǔn)確地運用對數(shù)運算性質(zhì)進行運算,學(xué)會運用換底公式。培養(yǎng)學(xué)生數(shù)學(xué)運算、數(shù)學(xué)抽象、邏輯推理和數(shù)學(xué)建模的核心素養(yǎng)。1、理解對數(shù)的概念,能進行指數(shù)式與對數(shù)式的互化;2、了解常用對數(shù)與自然對數(shù)的意義,理解對數(shù)恒等式并能運用于有關(guān)對數(shù)計算。
學(xué)生已經(jīng)學(xué)習(xí)了指數(shù)運算性質(zhì),有了這些知識作儲備,教科書通過利用指數(shù)運算性質(zhì),推導(dǎo)對數(shù)的運算性質(zhì),再學(xué)習(xí)利用對數(shù)的運算性質(zhì)化簡求值。課程目標(biāo)1、通過具體實例引入,推導(dǎo)對數(shù)的運算性質(zhì);2、熟練掌握對數(shù)的運算性質(zhì),學(xué)會化簡,計算.數(shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:對數(shù)的運算性質(zhì);2.邏輯推理:換底公式的推導(dǎo);3.數(shù)學(xué)運算:對數(shù)運算性質(zhì)的應(yīng)用;4.數(shù)學(xué)建模:在熟悉的實際情景中,模仿學(xué)過的數(shù)學(xué)建模過程解決問題.重點:對數(shù)的運算性質(zhì),換底公式,對數(shù)恒等式及其應(yīng)用;難點:正確使用對數(shù)的運算性質(zhì)和換底公式.教學(xué)方法:以學(xué)生為主體,采用誘思探究式教學(xué),精講多練。教學(xué)工具:多媒體。一、 情景導(dǎo)入回顧指數(shù)性質(zhì):(1)aras=ar+s(a>0,r,s∈Q).(2)(ar)s= (a>0,r,s∈Q).(3)(ab)r= (a>0,b>0,r∈Q).那么對數(shù)有哪些性質(zhì)?如 要求:讓學(xué)生自由發(fā)言,教師不做判斷。而是引導(dǎo)學(xué)生進一步觀察.研探.
對數(shù)與指數(shù)是相通的,本節(jié)在已經(jīng)學(xué)習(xí)指數(shù)的基礎(chǔ)上通過實例總結(jié)歸納對數(shù)的概念,通過對數(shù)的性質(zhì)和恒等式解決一些與對數(shù)有關(guān)的問題.課程目標(biāo)1、理解對數(shù)的概念以及對數(shù)的基本性質(zhì);2、掌握對數(shù)式與指數(shù)式的相互轉(zhuǎn)化;數(shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:對數(shù)的概念;2.邏輯推理:推導(dǎo)對數(shù)性質(zhì);3.數(shù)學(xué)運算:用對數(shù)的基本性質(zhì)與對數(shù)恒等式求值;4.數(shù)學(xué)建模:通過與指數(shù)式的比較,引出對數(shù)定義與性質(zhì).重點:對數(shù)式與指數(shù)式的互化以及對數(shù)性質(zhì);難點:推導(dǎo)對數(shù)性質(zhì).教學(xué)方法:以學(xué)生為主體,采用誘思探究式教學(xué),精講多練。教學(xué)工具:多媒體。一、 情景導(dǎo)入已知中國的人口數(shù)y和年頭x滿足關(guān)系 中,若知年頭數(shù)則能算出相應(yīng)的人口總數(shù)。反之,如果問“哪一年的人口數(shù)可達到18億,20億,30億......”,該如何解決?要求:讓學(xué)生自由發(fā)言,教師不做判斷。而是引導(dǎo)學(xué)生進一步觀察.研探.
函數(shù)在高中數(shù)學(xué)中占有很重要的比重,因而作為函數(shù)的第一節(jié)內(nèi)容,主要從三個實例出發(fā),引出函數(shù)的概念.從而就函數(shù)概念的分析判斷函數(shù),求定義域和函數(shù)值,再結(jié)合三要素判斷函數(shù)相等.課程目標(biāo)1.理解函數(shù)的定義、函數(shù)的定義域、值域及對應(yīng)法則。2.掌握判定函數(shù)和函數(shù)相等的方法。3.學(xué)會求函數(shù)的定義域與函數(shù)值。數(shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:通過教材中四個實例總結(jié)函數(shù)定義;2.邏輯推理:相等函數(shù)的判斷;3.數(shù)學(xué)運算:求函數(shù)定義域和求函數(shù)值;4.數(shù)據(jù)分析:運用分離常數(shù)法和換元法求值域;5.數(shù)學(xué)建模:通過從實際問題中抽象概括出函數(shù)概念的活動,培養(yǎng)學(xué)生從“特殊到一般”的分析問題的能力,提高學(xué)生的抽象概括能力。重點:函數(shù)的概念,函數(shù)的三要素。難點:函數(shù)概念及符號y=f(x)的理解。
例7 用描述法表示拋物線y=x2+1上的點構(gòu)成的集合.【答案】見解析 【解析】 拋物線y=x2+1上的點構(gòu)成的集合可表示為:{(x,y)|y=x2+1}.變式1.[變條件,變設(shè)問]本題中點的集合若改為“{x|y=x2+1}”,則集合中的元素是什么?【答案】見解析 【解析】集合{x|y=x2+1}的代表元素是x,且x∈R,所以{x|y=x2+1}中的元素是全體實數(shù).變式2.[變條件,變設(shè)問]本題中點的集合若改為“{y|y=x2+1}”,則集合中的元素是什么?【答案】見解析 【解析】集合{ y| y=x2+1}的代表元素是y,滿足條件y=x2+1的y的取值范圍是y≥1,所以{ y| y=x2+1}={ y| y≥1},所以集合中的元素是大于等于1的全體實數(shù).解題技巧(認識集合含義的2個步驟)一看代表元素,是數(shù)集還是點集,二看元素滿足什么條件即有什么公共特性。
(二)初讀課文,整體感知首先教師對作者進行簡單介紹,再要求學(xué)生速讀課文,讓學(xué)生初步感知課文內(nèi)容,歸納全文思路,邊讀邊思考PPT上的問題。問題:全文可以分成幾部分?此環(huán)節(jié)意在激發(fā)學(xué)生的學(xué)習(xí)主動性,培養(yǎng)學(xué)生的自學(xué)能力。讀畢,我會對學(xué)生的自學(xué)情況進行檢查反饋,鼓勵學(xué)生踴躍發(fā)言,說出自己理解的寫作思路,最后教師對學(xué)生的答案進行概括和總結(jié),此環(huán)節(jié)能夠讓學(xué)生對中國建筑的特征整體把握,夯實學(xué)習(xí)本文的基礎(chǔ),同時感知課文,理清文章脈絡(luò),實現(xiàn)長文短教,為析讀本文作好鋪墊。(三)析讀課文,質(zhì)疑問難此環(huán)節(jié)是教學(xué)的重要階段,在這里,我會以新課標(biāo)為基準(zhǔn),做到閱讀指向每一個學(xué)生的個體閱讀,同時在教學(xué)過程中遵循啟發(fā)性,循序漸進性的原則。此環(huán)節(jié)運用小組合作學(xué)習(xí)法、討論法和問答法分析中國建筑的特征。同學(xué)每四人為一小組討論PPT上展示的問題。
②癌癥患者在治療過程中,會有很大的身體損耗,而黃鱔有很好的滋補作用,適當(dāng)吃一點黃鱔,既能夠為患者補充營養(yǎng),也能夠提高患者的身體免疫力。 (來源于報紙)經(jīng)過討論交流,每一組一名同學(xué)自主發(fā)言,老師點撥,最后形成小結(jié)??磥碓?要權(quán)威發(fā)布,不要道聽途說看內(nèi)容 要事實清晰,不要模糊遺漏看立場 要客觀公允,不要情緒煽動看邏輯 要嚴謹準(zhǔn)確,不要簡單斷言情感判斷 理性判斷 理性表達(四)活動三,重實踐新課標(biāo)提到,語文課程應(yīng)引導(dǎo)學(xué)生在真實的語言運用情境中,通過自主的語言實踐活動,積累經(jīng)驗,把握規(guī)律,培養(yǎng)能力。據(jù)此,我設(shè)計了以下貼近學(xué)生生活、可參與性強的活動。多媒體展示案例,仍然是先討論交流,再自主發(fā)言,說出案例有哪些問題。這是某校園論壇上的一則尋物啟示。
教師總結(jié):社會主義市場經(jīng)濟是使市場在國家宏觀調(diào)控下起基礎(chǔ)性配置作用的經(jīng)濟,充分發(fā)揮市場基礎(chǔ)性調(diào)節(jié)作用,就必須主要靠經(jīng)濟手段、法律手段,而不是行政手段。(三)課堂總結(jié)、點評這節(jié)課我們重點學(xué)習(xí)了社會主義市場經(jīng)濟的有關(guān)知識,知道了社會主義市場經(jīng)濟的基本特征,以及國家宏觀調(diào)控的含義、目標(biāo)和主要手段。這對于我們在經(jīng)濟生活中正確地認識我國市場經(jīng)濟的性質(zhì)和作用,理解國家宏觀調(diào)控的措施及意義,增強社會主義優(yōu)越感和民族自強意識,自覺投身現(xiàn)代化建設(shè)等將有重大指導(dǎo)作用?!镎n余作業(yè) 討論:聯(lián)系經(jīng)濟生活中國家宏觀調(diào)控的實例,討論應(yīng)如何認識和理解國家各種宏觀調(diào)控手段的綜合運用,對國民經(jīng)濟發(fā)展的意義?!锝虒W(xué)體會 本節(jié)內(nèi)容與學(xué)生生活實際聯(lián)系密切,在學(xué)習(xí)中應(yīng)該多引入日常生產(chǎn)、生活中常見的一些宏觀調(diào)控實例,讓學(xué)生去深刻理解、把握宏觀調(diào)控手段及其作用。
【總結(jié)講解】地球為生命物質(zhì)的存在提供了三個最優(yōu)越的條件,這也是其它行星不具備的條件——(1)日地距離適中(1.496億km),使地表平均氣溫為15℃,有利于生命過程的發(fā)生和發(fā)展;地球上的溫度,還有利于水的液態(tài)存在。適合生物呼吸的大氣: (2) 地球的體積、質(zhì)量適中,吸引大量氣體聚集在地球周圍,又經(jīng)過漫長的演化,形成了以氮、氧為主的適合生物呼吸的大氣。(3)海洋的形成: 由于地球內(nèi)部放射性元素衰變致熱和原始地球重力收縮及地球內(nèi)部的物質(zhì)運動等形成了原始大洋,地球最初的單細胞生命就出現(xiàn)在大洋中。(備注:此部分可以模擬演示或講解地球存在生命的溫度、大氣、水等條件;假設(shè)地球溫度過高或過低對地球生命的影響;引導(dǎo)學(xué)生分析地球大氣、溫度與地球水的關(guān)系)【板書】1、日地距離適中2、地球的體積、質(zhì)量適中3、液態(tài)水的存在【啟發(fā)提問】 宇宙中是否只有地球上存在有生命物質(zhì)?
解析:當(dāng)a0時,直線ax-by=1在x軸上的截距1/a0,在y軸上的截距-1/a>0.只有B滿足.故選B.答案:B 3.過點(1,0)且與直線x-2y-2=0平行的直線方程是( ) A.x-2y-1=0 B.x-2y+1=0C.2x+y=2=0 D.x+2y-1=0答案A 解析:設(shè)所求直線方程為x-2y+c=0,把點(1,0)代入可求得c=-1.所以所求直線方程為x-2y-1=0.故選A.4.已知兩條直線y=ax-2和3x-(a+2)y+1=0互相平行,則a=________.答案:1或-3 解析:依題意得:a(a+2)=3×1,解得a=1或a=-3.5.若方程(m2-3m+2)x+(m-2)y-2m+5=0表示直線.(1)求實數(shù)m的范圍;(2)若該直線的斜率k=1,求實數(shù)m的值.解析: (1)由m2-3m+2=0,m-2=0,解得m=2,若方程表示直線,則m2-3m+2與m-2不能同時為0,故m≠2.(2)由-?m2-3m+2?m-2=1,解得m=0.
情境導(dǎo)學(xué)前面我們已討論了圓的標(biāo)準(zhǔn)方程為(x-a)2+(y-b)2=r2,現(xiàn)將其展開可得:x2+y2-2ax-2bx+a2+b2-r2=0.可見,任何一個圓的方程都可以變形x2+y2+Dx+Ey+F=0的形式.請大家思考一下,形如x2+y2+Dx+Ey+F=0的方程表示的曲線是不是圓?下面我們來探討這一方面的問題.探究新知例如,對于方程x^2+y^2-2x-4y+6=0,對其進行配方,得〖(x-1)〗^2+(〖y-2)〗^2=-1,因為任意一點的坐標(biāo) (x,y) 都不滿足這個方程,所以這個方程不表示任何圖形,所以形如x2+y2+Dx+Ey+F=0的方程不一定能通過恒等變換為圓的標(biāo)準(zhǔn)方程,這表明形如x2+y2+Dx+Ey+F=0的方程不一定是圓的方程.一、圓的一般方程(1)當(dāng)D2+E2-4F>0時,方程x2+y2+Dx+Ey+F=0表示以(-D/2,-E/2)為圓心,1/2 √(D^2+E^2 "-" 4F)為半徑的圓,將方程x2+y2+Dx+Ey+F=0,配方可得〖(x+D/2)〗^2+(〖y+E/2)〗^2=(D^2+E^2-4F)/4(2)當(dāng)D2+E2-4F=0時,方程x2+y2+Dx+Ey+F=0,表示一個點(-D/2,-E/2)(3)當(dāng)D2+E2-4F0);
This unit is about history and traditions. From the opening page, we can know that this unit will introduce the history and traditions around the world. As Marcus Garvey says “A people without the knowledge of their past history, origin and culture is like a tree without roots”, it is important for students to realize the importance and value of knowing the history and traditions and their further meanings. And this part ( listening and speaking ) is divided into two parts: Part A---share views on historic sites, Part B ---talk about a visit to a historic tourist destination. By talking with a foreigner, the speakers introduce the historic attractions and their cultures. Part A is that William, a British student, who was going to visit the Confucius Temple and a Chinese student, Xiao Kong, who was going to the Confucius Temple to meet with the members of the research group, went together and exchanged their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts. Part B is a conversation between Xiao Yan, a youth hostel receptionist and Paul, a backpacker about the feelings and experience after visiting the Chinese famous tourist attraction Pingyao.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to talk about historic spots and great person.3. Instruct students to use functional sentences of showing one’s excitement, surprise and disappointment.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to discuss with their peers the related topics.3. Enable students to use the functional items of showing one’s excitement, surprise and disappointment.
(4)Now we have heard a number of outstanding speeches ... 我們已經(jīng)聆聽了許多精彩的發(fā)言……(5)Because we wanted the nations of the world, working together, to deal with ... 因為我們希望全世界各國團結(jié)起來去應(yīng)對……(6)And if we do not act ... 如果我們不采取行動……(7)Now, I share the concerns that have been expressed ... 我也同意對于……表達的擔(dān)心(8)Let us show the world that by working together we can ... 讓我們告訴全世界,通過一起努力我們可以……(9)It is now time for us to ... 是時候我們……(10)And I have always wished that ... 我一直希望……(11)Thank you for letting me share this day with me.感謝你們和我共度這一天。實踐演練:假如你是高中生李華,你校將舉辦一次以“音樂”為主題的演講比賽,請你按照主題,寫下你的演講稿。注意:詞數(shù)100左右。First of all, thank you for listening to my speech. My topic is: love music like love yourself.Music is like the air we need to maintain our normal lives around us. You can't imagine how terrible a world without music would be. Movies and TV shows have no music, only dry conversations and scenes; mobile phones only vibrations; streets only noisy crowds; cafes, western restaurants only depressed meals. What a terrible world it is!As a student, I hope we all can enjoy the fun brought by music in our spare time. Instead of just listening to music, we can even make our own music. Let's enjoy the fun of music!Thanks again for your attention!
全班齊讀第五段內(nèi)容。請一位同學(xué)分析,接著讓這位同學(xué)按他分析的讀一遍。3、4兩自然段的平緩之后,第5段作者的情感再次抬升。為了滿足這種情感的張揚,作一口氣連用了四個排比句式“現(xiàn)在是……時候”,一方面這是情感發(fā)泄的需要,另一方面這種排山倒海的語勢也加強了內(nèi)容的表達,極強地突出了現(xiàn)實為自由、平等而戰(zhàn)的重要性。四、學(xué)會演講我們剛才細讀了課文,但讀和講是有區(qū)別的。所謂演講,是一門語言藝術(shù),它的主要形式是“講”,即運用有聲語言并追求言辭的表現(xiàn)力和聲音的感染力;同時還要輔之以“演”,即運用面部表情、手勢動作、身體姿態(tài)乃至一切可以理解的態(tài)勢語言,使講話“藝術(shù)化”起來,從而產(chǎn)生一種非凡的藝術(shù)魅力。那么,接下來就假設(shè)一下假如你是馬丁·路德·金,你會怎樣去講這篇演講辭。
This teaching period mainly deals with grammar “restrictive relative clauses.” To begin with, teachers should lead students to revise what they have learned about the relative pronouns and relative adverbs. And then, teachers move on to stress more special cases concerning this grammar, such as the “preposition+ relative pronouns which and whom” and cases where we can omit the relative pronouns. This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercises. 1. Guide students to review the basic usages of relative pronouns and adverbs of attributive clauses.2. Lead students to learn to use some special cases concerning restrictive relative clauses flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of relative pronouns and adverbs of attributive clauses in a sentence2. Instruct students to write essays using the proper relative pronouns and adverbs of attributive clauses.本節(jié)語法思考:定語從句在復(fù)合句中的作用是什么? 關(guān)系詞有哪些?定語從句在復(fù)合句中的作用相當(dāng)于形容詞,它在句中作定語修飾名詞或代詞。他們在先行詞和定語從句之間起到聯(lián)系作用,同時在意義上代表先行詞并在定語從句中擔(dān)任一個成分。被定語從句所修飾的詞稱先行詞,定語從句一般放在先行詞的后面。
The theme of the reading and thinking is about “Understanding how a problem was solved”.The Listening & Speaking & Talking is about international co-work to protect the Mount Tai, in which the students from seven countries came up with many solutions even create the Mount Tai App. This section aims at showing how to solve a difficult and even tough problem about protecting the cultural heritage by the international co-work. So in this section, cultivating students’ international awareness is very clear and important. Concretely, with the economic development, how to balance the protection of cultural relics and social development is a big challenge for human. In the 1950s, the Egyptian government wanted to build the Aswan Dam across the Nile to control floods, produce electricity and water farms. But the proposal led to protests because it would destroy a lot of cultural relics. The Egyptian had no choice but ask the UN for help. Therefore, a international cooperation about how to protect the cultural relics began, which involved the time length about 20 years and a large amount of fund. Then, the problems was solved. 1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline3. Learn how to solve a tough problem by asking for help and cooperation4. Have the international awareness and understand the great strength of international cooperation.1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline.3. Learn how to solve a tough problem by asking for help and cooperation.
The activity topic of this section is "report an ongoing event", and the structure is the passive voice of present continuous tense. Rare wild animals are suffering from large-scale poaching, and species are on the brink of danger. Rescue operations are underway. "Being" and "suffering" are the meanings of the present progressive passive voice.The usage of present progressive passive voice is of great importance in writing a good discourse and appreciating some difficult language items, so it is vital to master it and use it flexibly in a context.1. Motivate Ss to deepen the understanding of the usage of present progressive passive voice in a fixed context.2. Enable Ss to master the usage of present progressive passive voice and use it flexibly in a context.3. Lead Ss to construct sentences or appreciate sentences used master it and use it flexibly in a context.1. Help students to appreciate the function of the usage of present progressive passive voice in a sentence2. Instruct students to write essays using the proper usage of present progressive passive voice.Look at the picture and tell me what are workers doing? What is the house being done?