九年級英語When_was_it_invented課件1

1、Unit4 When was it invented? 學(xué)習(xí)目標(biāo)學(xué)習(xí)目標(biāo) 1.1.學(xué)會使用被動語態(tài)談?wù)撃撤N物品發(fā)明的時間、學(xué)會使用被動語態(tài)談?wù)撃撤N物品發(fā)明的時間、 發(fā)明人及其用途。發(fā)明人及其用途。 2.2.掌握各種時態(tài)的被動語態(tài)及情態(tài)動詞的被動掌握各種時態(tài)的被動語態(tài)及情態(tài)動詞的被動 語態(tài)結(jié)構(gòu)。語態(tài)結(jié)構(gòu)。 重點單詞重點單詞：invent,calculator,scoop,operate,invent,calculator,scoop,operate, heat,sour,ancient,remain,notice,produce,heat,sour,ancient,remain,notice,p

2、roduce, pleasant,pie,throw,taste,century,active,pleasant,pie,throw,taste,century,active, knock, divideknock, divide 常考短語?？级陶Z：be used for,light bulb,microwave be used for,light bulb,microwave oven,by mistake,by accident,according to,oven,by mistake,by accident,according to, fall into,in this way,knoc

3、k intofall into,in this way,knock into 重點句型重點句型：1.When was1.When wasinventedinvented？ 2.Who invented the2.Who invented the? ? 3.The 3.Thewas invented bywas invented by? ? 4.It is believed that 4.It is believed that 語法聚焦語法聚焦：被動語態(tài)及其謂語動詞的結(jié)構(gòu)形式和用法被動語態(tài)及其謂語動詞的結(jié)構(gòu)形式和用法。 課程標(biāo)準(zhǔn)要求掌握的內(nèi)容課程標(biāo)準(zhǔn)要求掌握的內(nèi)容 Period1 words a

4、nd SectionA1a-1cPeriod1 words and SectionA1a-1c Period2 SectionA 2a-4Period2 SectionA 2a-4 Period3 SectionB 1a-2cPeriod3 SectionB 1a-2c Period4 SectionB 3a-4bPeriod4 SectionB 3a-4b Period5 Selfcheck-ReadingPeriod5 Selfcheck-Reading Groupwork (1a) 1976 1885 19711876 1927 學(xué)生根據(jù)自己搜集的資料練習(xí)I thinkwas inven

5、ted before/after the句型 Listening (1b ) 核對信息， 學(xué)生認(rèn)真 Pairwork (1c) A: When was the telephone/ invented? B: I think it was invented in 1876/ ？? 注意聽前準(zhǔn)備，尤其是注意聽前準(zhǔn)備，尤其是2B中的人名。中的人名。 Grammar Focus The passive voice 被動語態(tài)被動語態(tài) 在被動語態(tài)的句子中在被動語態(tài)的句子中, 謂語部分謂語部分 的結(jié)構(gòu)是的結(jié)構(gòu)是be + 過去分詞過去分詞。被動語態(tài)。被動語態(tài) 的句子的時態(tài)變化反映在的句子的時態(tài)變化反映在be動

6、詞上。動詞上。 也就是說也就是說, 把一個句子做成被把一個句子做成被 動語態(tài)的句子動語態(tài)的句子, 只需要寫出只需要寫出be動詞動詞 的所需時態(tài)的所需時態(tài), 再加上所給動詞再加上所給動詞 的過去分詞就行了。當(dāng)然的過去分詞就行了。當(dāng)然, 這只是指這只是指 謂語部分而言。我們知道謂語部分而言。我們知道, be動詞作動詞作 為一個獨(dú)立的謂語動詞有自己現(xiàn)在為一個獨(dú)立的謂語動詞有自己現(xiàn)在 分詞分詞(being)和過去分詞和過去分詞 (been)。那。那 么么, 下面我們來看看下面我們來看看be 在各種時態(tài)中在各種時態(tài)中 的變化形式：的變化形式： The passive voice. Bell invent

7、ed the telephone in 1876. The telephone was invented by Bell in 1876. 主語 謂語動詞過去時賓語時間狀語 主語謂語動詞的過去分詞賓語時間狀語 Make sentences Pairwork (3a) Helpful inventions: light bulb, TV set, microwave oven, fan, radio, umbrella, bicycle, camera, watch, computer, Annoying inventions: alarm clock, mobile phone, junk f

8、ood, ice cream, 內(nèi)容簡單，組長帶領(lǐng)組員完成。 A: What do you think is the most helpful/ most annoying invention? B: I think the most helpful invention/ most annoying is the. A: Why is that? B: . Pairwork (3b) 教師與一名學(xué)生示范表演對話，然后讓學(xué)生分組練習(xí)。 1.被動語態(tài)的結(jié)構(gòu)及其用法。被動語態(tài)的結(jié)構(gòu)及其用法。 2.invention/inventor/invent 3.be used for sth./doing s

9、th. be used as/by 4.do you think做插入語做插入語 5.most helpful/annoying crispy and salty Describe how food tastes.(1a) potato chips lemons sour ice cream sweet tea sweet 師出示圖片，學(xué)生用學(xué)過的單詞描述食物的味道。 Listening (2a, 2b) 1. The potato chips were invented by mistake. 2. They were invented in 1863. 3. The customer th

10、ought the potatoes werent thin enough. 4. The customer said they werent salty enough. 5. George wanted to make the customer happy. 6. The customer was happy in the end. T F T T F F 聽一聽薯條是怎么被發(fā)明的，聽錄音，判斷正誤，錯的要說明理由。 2b The history of chips 稍有難度，錄音調(diào)控，聽力技巧。 Reading (3a) 1. What is this article about? 2. W

11、hen was it invented? 3. Who was it invented by? 4. How was it invented? 小組合作解決問題，自學(xué)知識點，教師指導(dǎo)，學(xué)生展示。 Writing (3b) Self Check (2) The abacus was invented in the sixth century by Chinese. 注意： Reading Do you know when basketball was invented? 1.by mistake錯誤地錯誤地 2.in the end/finally/at last 3.on接觸接觸/above上方上方/over垂直垂直4.by accident偶然地偶然地 5.according to 根據(jù)根據(jù) 6.notice的用法的用法 7.in this way這樣這樣 8.fromto 9.taste用作系動詞用作系動詞10.preferto/prefer