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Unit 6　When was it invented? 單元教材分析 類別 課程標準要求掌握的項目 單元話題 In this unit，students learn to talk about the history of inventions. 單元語法 Passive voice(past tense) 教學目標 1.能掌握以下句型： ①—When was the telephone invented? —I think it was invented in1876. ②—What are they used for? —They are used for seeing at night. 2．能談論物品被發(fā)明的時間、發(fā)明者，表達某發(fā)明的用途。 3．了解一些近現(xiàn)代發(fā)明的時間及用途，激發(fā)自己熱愛發(fā)明的情感。培養(yǎng)想象力，善于觀察事物。面對難題，用積極的態(tài)度去解決，發(fā)揮想象力，認識世界，改造世界。 學情分析 本單元話題是發(fā)明，學生們對發(fā)明不太熟悉，因此教師在講前應普及下有關發(fā)明的知識。在暢談發(fā)明話題時自覺運用被動語態(tài)的過去時態(tài)。 課時教學設計 第一課時　Section A (1a－2d) 1．重點單詞：heel，scoop，electricity，style，project，pleasure，zipper，daily，website，pioneer，list，mention 2．重點短語：be used for，think of，have a point 3．重點句式：—When was the telephone invented? —I think it was invented in 1876. What are they used for? Can you help me think of an invention? Is it really such a great invention? Think about how often its used in our daily lives. The pioneers of different inventions were listed there. At that time，it wasnt used widely. 1．重點短語和句型。 2．一般過去時態(tài)的被動語態(tài)。 難點 一般過去時態(tài)的被動語態(tài)。 自主學習： 一、預習課本P41－42新單詞并背誦，完成下面的漢譯英。 1．鞋跟heel　　　2.鏟子scoop 3．電能electricity 4.樣式style 5．項目project 6.高興pleasure 7．拉鏈zipper 8.日常的daily 9．網(wǎng)站website 10.先鋒pioneer 11．名單list 12.提到mention 二、認真預習1a－2d，找出下列短語和句型。 1．被用來……be used for 2．有道理have a point 3．—電話是什么時候發(fā)明的？ —我認為它是1876年發(fā)明的。 —When was the telephone invented? —I think it was invented in 1876. 4．它們是用來干什么的呢？ What are they used for? 5．你能幫我考慮一種發(fā)明嗎？ Can you help me think of an invention? 6．它真的是如此偉大的一項發(fā)明嗎？ Is it really such a great invention? 7．考慮一下它在我們的日常生活中使用的多么頻繁。 Think about how often its used in our daily lives. 8．不同發(fā)明的先鋒都被列了出來。 The pioneers of different inventions were listed there. 9．在那時，它還沒有被廣泛地應用。 At that time，it wasnt used widely. 課堂導學： Step 1　情景導入 展示一些近代發(fā)明的圖片與近代發(fā)明的發(fā)明者，讓學生們將圖片與發(fā)明者相連。 T：Do you know what these inventions are? S1：Its a car. S2：Its a telephone. S3：Its a television. T：Do you know who these inventors are? S1：Karl Benz. S2：Alexander Bell. S3：J.L.Baird. Let Ss match the inventions and the inventors. Step 2　完成教材1a－1c的任務 1．1a中的四種發(fā)明，你認為哪個是最早發(fā)明的，依次標出序號，小組內(nèi)可交流。 2．認真聽錄音，將1b中的物品和它們發(fā)明的年代匹配。 Keys：d1876，a1885，c1927，b1971 3．再聽一遍錄音，并跟讀對話。 4．兩人一組互相利用1b中的物品和發(fā)明年代，仿照1c的對話形式編練新的對話，完成后邀請幾組學生展示。 A：When was the telephone invented？　　 B：I think it was invented in 1876. 5．小結訓練。 B(1)—The book ____ to you by Jim，so you can ask him. —Thank you.I will ask him. A．gave　　　　　　　B．was given C．was giving D．had given D(2)—____ invented the car? —Sorry，I dont know.Lets ask the teacher. A．What B．When C．Where D．Who B(3)—When ____ the telephone ____？ —In 1876. A．did；invent B．was；invented C．were；invented D．do；invented Step 3　完成教材2a－2c的任務 1.認真觀察2a中的圖片，然后聽錄音，根據(jù)聽到的順序為圖片標號，集體核對答案。 Keys：3　1　2 2．再認真聽一遍錄音，完成2b中的表格，完成后集體核對答案。 Keys：changing，in the dark，serving 3．聽第三遍錄音，學生跟讀。 4．兩人一組利用2b中的信息，仿照2c的形式兩人一組編練新的對話，邀請幾組學生表演對話。 A：What are they used for? B：Theyre used for… 5．小結訓練。 C(1)The knife ____ things. A．used for cutting B．is used for cut C．is used to cut D．use to cut C(2)The thing ____ by Jim under the bed is a teapot. A．invented B．discovered C．found D．found out A(3)The teachers ____ how to use computer in our class yesterday. A．were taught B．taught C．was taught D．teach Step 4　完成教材2d的任務 1．播放2d的對話錄音，讓學生跟讀，模仿并理解大意。然后讓學生分角色朗讀并表演2d的對話。 2．對話內(nèi)容鞏固訓練。要求學生根據(jù)2d對話的內(nèi)容完成短文。完成后要求若干學生給出自己的答案。以鞏固對對話內(nèi)容的了解。 Last week，Roy saw a website，it says the zipper is one of the greatestsmall inventions that changed the world.It mentionedthat the zipper was inventedby Whitcomb Judson in 1893.But at that time，it wasnt widelyused.Paul thinks he do seems to have a point.The zipper is really such a great invention and its used in our daily lives very often and everywhere. Step 5　布置作業(yè) 完成《探究在線高效課堂》本課時練習。 第二課時　Section A (3a－3c) 1．重點單詞：nearly，ruler，boil，remain，smell，saint，national，trade，doubt 2．重點短語：by accident，fall into，some time，take place，without doubt，It is believed that… 3．重點句式： In England，tea didnt appear until around 1660. When was tea brought to other countries? 1．重點短語和句型。 2．一般過去時態(tài)的被動語態(tài)。 難點 一般過去時態(tài)的被動語態(tài)。 自主學習： 一、預習課本P43新單詞并背誦，完成下面的漢譯英。 1．意外的accidental　　2.幾乎nearly 3．統(tǒng)治者ruler 4.煮沸boil 5．剩余remain 6.氣味smell 7．圣人saint 8.國家的national 9．交易trade 10.疑惑doubt 二、認真預習3a－3c，找出下列短語和句型。 1．偶然by accident 2．掉入到……里fall into 3．發(fā)生take place 4．毫無疑問without doubt 5．據(jù)說……Its said that… 6．在英國，茶葉大約直到1660年才出現(xiàn)。 In England，tea didnt appear until around 1660. 7．茶葉是什么時候傳到其他國家的？ When was tea brought to other countries? 課堂導學： Step 1　情景導入 　　播放視頻《茶葉的起源》，讓學生們了解中國的茶文化，及茶葉被發(fā)明的淵源，并了解其發(fā)展過程。 1．What is the video about? 2．Who is the writer of Cha Jing? Ss try to answer the questions： Keys：1.Its about the tea. 2．Lu Yu. Step 2　完成教材3a的任務 1．Tell Ss to read the passage quickly and match each paragraph with its main idea. Para.1　　Lu Yu and his book Cha Jing Para.2　　How tea spread to other countries Para.3　　How tea was invented by accident 2.方法指導：先閱讀所給的三句話，然后快速閱讀短文，抓住每一段的主題句，找到答案。 3．學生們按老師指導的方法進行閱讀，并快速閱讀三個段落。 4．最后，教師讓部分學生回答答案，并核對答案。 Para.1　How tea was invented by accident Para.2　Lu Yu and his book Cha Jing Para.3　How tea spread to other countries Step 3　完成教材3b的任務 1．告訴學生們再次閱讀短文內(nèi)容，并回答3b中的所有問題。 2．學生們先閱讀這些問題，理解它們的意思，然后帶著相關問題仔細回讀短文，并在短文的相關信息處畫線。 3．讓學生們回答問題，并核對答案。 ①It was first drunk about 5, 000 years ago. ②It was invented by accident. ③Lu Yu. ④Its about how tea plants were grown and used to make tea. ⑤It is believed tea was brought to Korea and Japan during the 6th and 7th centuries.Tea didnt appear until around 1660 in England. 4．讓學生讀一下自己的答案，并改正答案。 Step 4　完成教材3c的任務 1．告訴學生們本學習活動的要求：用所給單詞的適當形式填空。 2．讓學生們讀3c中的內(nèi)容，理解每個句子的大體意思。 3．學生們閱讀句子內(nèi)容，回想短文的內(nèi)容，選擇恰當?shù)膯卧~并用其恰當形式填空。 4．如果不能直接填上，可以再去閱讀短文，在相關的內(nèi)容處，再仔細進行閱讀，找到相關信息，并完成句子。 5．核對答案。 ( invented　drunk　produced　brought　traded ) Step 5　鞏固練習 1．Fill in the blanks according to the first paragraph. Tea (after water), the most popular drink in the world was invented(invent) by accident.It is believed that tea was drunk(drink) about 5，000 years ago.It is said (say) that a Chinese ruler called(call) Shen Nong was the first to discover(discover) tea as a drink.One day Shen Nong was boiling(boil) drinking water over an open fire.Some leaves from a tea plant fell(fall) into the water and remained there for some time.It produced(produce) a nice smell so he tasted(taste) the brown water.It was quite delicious, and so, one of the worlds favorite drinks was invented (invent)． 2．Fill in the blanks according to the second paragraph. Lu Yu, “the saint of tea”， mentioned(mention) Shen Nong in his book Cha Jing a few thousand years later.The book describes how tea plants were grown(grow) and used to make tea.It also discusses where the finest tea leaves were produced(produce) and what kinds of waterwere used(use)． 3．Fill in the blanks according to the third paragraph. People believed that tea was brought(bring) to Korea and Japan during the 6th and 7th centuries.In England, tea didnt appear(not appear) until around 1660, but in less than 100 years, it had become the national drink.The tea trade from China to Western countries took(take) place in the 19th century. Step 6　布置作業(yè) 完成《探究在線高效課堂》本課時練習。 第三課時　Section A (Grammar Focus－4c) 1．重點單詞：fridge，low，somebody，translate，lock，earthquake，sudden，bell，biscuit，cookie，musical，instrument 2．重點短語：at a low price，all of a sudden 3．重點句式： Who was it invented by? Somebody stole my camera from my hotel room. Our parents advised us not to go out alone. Different writers translated the book into different languages. 1．重點短語和句型。 2．一般過去時態(tài)的被動語態(tài)。 難點 熟練掌握一般過去時態(tài)的被動語態(tài)。 自主學習： 一、預習課本P44新單詞并背誦，完成下面的漢譯英。 1．冰箱fridge　　　　　2.低的low 3．某人somebody 4.翻譯translate 5．鎖住lock 6.地震earthquake 7．突然(的)sudden 8.鈴(聲)bell 9．餅干biscuit 10.曲奇餅cookie 11．音樂的musical 12.器械instrument 二、認真預習3a－3c，找出下列短語和句型。 1．以低廉的價格at a low price 2．突然all of a sudden 3．它是被誰發(fā)明的？ Who was it invented by? 4．有人從我旅館房間里偷走了我的相機。 Somebody stole my camera from my hotel room. 5．我們的父母建議我們不要單獨外出。 Our parents advised us not to go out alone. 6．不同的作家把這本書翻譯成了不同的語言。 Different writers translated the book into different languages. 課堂導學： Step 1　情景導入 Teacher：When was the telephone invented? Student 1：It was invented in 1876. Now please practice conversations with your partners like this according to the information that the teacher gives. Step 2　完成教材Grammar Focus的任務 1．嘗試完成下列句子 ①拉鏈是什么時候被發(fā)明的？ When was the zipper invented? ②它于1893年被發(fā)明。 It was invented in 1893. ③它是由誰發(fā)明的？ Who was it invented by? ④它是由惠特科姆賈德森發(fā)明的。 It was invented by Whitcomb Judson. ⑤茶葉是什么時候被帶到朝鮮去的？ When was tea brought to Korea? ⑥茶葉在六到七世紀之間被帶到朝鮮。 Tea was brought to Korea during the 6th and 7th centuries. ⑦熱冰激凌勺用來做什么？ What is the hot icecream scoop used for? ⑧它用于挖很冷的冰激凌。 Its used for serving really cold icecream. ⑨電話機在1876年被亞歷山大格拉漢姆貝爾所發(fā)明。 The telephone was invented by Alexander Graham Bell in 1876. ⑩亞歷山大格拉漢姆貝爾于1876年發(fā)明了電話機。 Alexander Graham Bell invented the telephone in 1876. 2．梳通Grammar Focus，回顧語法重點。 Step 3　完成教材4a的任務 1．做題方法點撥示例： ①點撥：原句為一般過去時態(tài)，原句的謂語動詞為sold，賓語為the fridge；改為被動語態(tài)時，應將the fridge作句子主語，謂語動詞用was sold的形式。 They sold the fridge at a low price.→ The fridge was sold at a low price. ②點撥：分析原句的句子結構可知，stole是謂語動詞，my camera是句子的賓語；改為被動語態(tài)時，應將my camera作句子主語，謂語動詞用was stolen的形式。 Somebody stole my camera from my hotel room.→ My camera was stolen from my hotel room. 學生們自主將其他三個句子變成被動語態(tài)。 2．最后，教師與同學們一起校對答案，并對學生們有疑問的地方進行解釋，或做出合理的分析點撥。 Keys：(3)Where were these photos taken? (4)We were advised not to go out alone by our parents. (5)The book was translated into different languages by different writers. Step 4　完成教材4b的任務 1．讓學生們閱讀方框中的詞匯，了解詞匯及句子的意思，為進行填詞做好準備。 eat, like, invite, tell, lock, ring, break, bring 2．認真閱讀每個句子，根據(jù)上下文確定空格處應填的單詞。 3．逐句進行分析推敲，然后分析句子的時態(tài)及語態(tài)，用適當?shù)男问教羁铡? (1)You ________ to the party last night, werent you? Why didnt you go? (2)The earthquake happened all of a sudden, but luckily the villagers ________ to a safe place. (3)The door ________ when we arrived, so we ________the bell. (4)The students ________not to eat or drink in class, but Ruby ________ the rule when she started eating a biscuit in science class. (5)The cookies ________by the hungry kids in less than 20 minutes, and they really ________ them. 4．最后，通讀一遍所有句子，進行綜合理解，看句子的意思是否通順，合理。 5．Check the answers with the Ss. Keys：(1)were invited；(2)were brought； (3)was locked, rang (前一句中，門是被鎖的，故應用被動語態(tài)；后一句中，我們?nèi)グ撮T鈴，是主動語態(tài))； (4)were told, broke (前一句中，學生們是被告訴不要做這些事情，故應用被動語態(tài)；后一句中，Ruby違反規(guī)則，則是主動語態(tài)); (5)were eaten, liked (前一句中，餅干是被孩子們吃掉了，故應用被動語態(tài)；后一句中，孩子們喜歡這些餅干，則是主動語態(tài))。 Step 5　完成教材4c的任務 1．先通讀小短文，了解大意。 The telephone ________(invent) by Alexander Graham Bell.He ________(born) in 1847.Mr.Bell ________(work) on the invention of the telephone with Thomas Watson.In 1875, Mr.Bell ________(learn) how to send musical notes through an instrument similar to a telephone.Finally, the telephone ________(invent) in 1876.The first sentence that ________(say) on the telephone by Mr.Bell was “Mr.Watson, come here; I want to see you.” Today the telephone________(use) around the world. 2．逐句分析每一句話的意思，確定句子主語和謂語動詞之間的主動或被動關系。 3．結合句子的時態(tài)，填上正確的形式。 4．復讀短文，看是否通順。 5．核對答案。 答案：was invented，was born，worked，learned，was invented，was said，is used Step 6　布置作業(yè) 完成《探究在線高效課堂》本課時練習。 第四課時　Section B (1a－1e) 1．重點單詞：crispy，salty，sour，customer 2．重點短語：by mistake，in the end 3．重點句式： Potato chips were invented by mistake. George wanted to make the customer happy. 1．重點單詞和句型。 2．能夠熟練運用被動語態(tài)。 難點 能夠熟練運用被動語態(tài)。 自主學習： 一、預習課本P45新單詞并背誦，完成下面的漢譯英。 1．脆的crispy　　　2.咸的salty 3．酸的sour 4.顧客customer 二、認真預習1a－1e，找出下列短語和句型。 1．錯誤地by mistake 2．最后in the end 3．炸薯條被錯誤地發(fā)明了。 Potato chips were invented by mistake. 4．喬治想讓顧客高興。 George wanted to make the customer happy. 課堂導學： Step 1　情景導入 Teacher：Do you like eating potato chips？I am sure most of us like them very much.But do you know who invented them and how they were invented？Today lets learn together to know more about the history of the potato chips. Step 2　完成教材1a－1e的任務 1．學生朗讀1a中的單詞，教師糾正讀音錯誤，然后兩人一組互相提問背誦單詞。 2．你知道1a圖片中的水果是什么味道嗎？用方框中的形容詞描述水果的味道，完成后小組內(nèi)互相交流。 3．在1b四個表示味道的單詞后面填寫具有這種味道的食物，完成后小組內(nèi)互相交流。 4．聽錄音，根據(jù)對話內(nèi)容判斷句子的正誤，集體核對答案，完成1c。 (1)Potato chips were invented by mistake. (2)They were invented in 1863. (3)The customer thought the potatoes were not thin enough. (4)The customer said they were not salty enough. (5)George wanted to make the customer happy. (6)The custom was happy in the end. Keys：T, F, T, F, F, T 5．再聽一遍錄音，完成1d的填空，完成后學生展示答案，教師點撥。 The History of Potato Chips Do you know how potato chips were invented? Potato chips ________by a cook called George Crum.They were invented in ________．George Crum cut the potatoes really, really ____and then cooked them for a long time until they were ________．Finally he put lots of salt on them so they were ________． Keys：were invented, 1853, thin, crispy, really salty 6．聽第三遍錄音，學生跟著大聲朗讀。 7．兩人一組利用1c和1d中的聽力信息，仿照1e形式編練對話，并在小組內(nèi)互相表演對話。 A：Did you know potato chips were invented by mistake? B：Wow，I didnt know that.Who invented them? A：… 8．小結訓練。 B(1)John took my book ____ mistake. A．to　 　B．by　 　C．a(chǎn)bout　 　D．on C(2)Though my grandmother is old，she is funny enough to make ____. A．us to laugh B．our laugh C．us laugh D．ours laugh C(3)This fish is cooked by a cook ____ Jack. A．call B．calls C．called D．calling C(4)He puts too much salt into the dish，so it is very ____. A．sweet B．crispy C．salty D．sour Step 3　布置作業(yè) 完成《探究在線高效課堂》本課時練習。 第五課時　Section B (2a－2e) 1．重點單詞：Canadian，divide，basket，popularity，professional，hero 2．重點短語：in history，dream of，look up to，divide…into，not only…but also… 3．重點句式： He was asked to think of a game that could be played in the winter. Dr. Naismith created a game to be played inside on a hard floor. They need to stop the competing team from getting the ball into their own basket. The popularity of basketball has risen around the world，with many young people dreaming of becoming famous players. Basketball has not only become a popular sport to play，but it has also become a popular sport to watch. The number of foreign players，including Chinese players，in the NBA has increased. These stars encourage young people to work hard to achieve their dreams. 1．重點短語和句型。 2．通過腦中構圖的方法來加強理解和記憶。 難點 1．重點短語和句型。 2．通過腦中構圖的方法來加強理解和記憶。 自主學習： 一、預習課本P46－47新單詞并背誦，完成下面的漢譯英。 1．加拿大的Canadian 2.分開divide 3．筐basket 4.受歡迎popularity 5．英雄hero 6.職業(yè)的professional 二、認真預習2a－2e，找出下列短語和句型。 1．把……分開divide…into… 2．夢想dream of 3．不但……而且……not only…but also… 4．仰慕look up to 5．他被要求考慮一種能夠在冬天玩的運動。 He was asked to think of a game that could be played in the winter. 6．Naismith博士發(fā)明了一種可以在室內(nèi)堅硬地板上玩的運動。 Dr.Naismith created a game to be played inside on a hard floor. 7．他們需要阻止競爭隊伍把球投入到他們自己的籃筐中。 They need to stop the competing team from getting the ball into their own basket. 8．籃球不僅成為玩的運動也變成了可以觀賞的運動。 Basketball has not only become a popular sport to play，but it has also become a popular sport to watch. 9．NBA中外籍運動員的數(shù)量包括中國運動員的數(shù)量已經(jīng)增加了。 The number of foreign players，including Chinese players，in the NBA has increased. 10．這些明星激勵年輕人努力學習實現(xiàn)他們的夢想。 These stars encourage young people to work hard to achieve their dreams. 課堂導學： Step 1　情景導入 Show some pictures of playing basketball.Ask Ss some questions about basketball games.Discuss the sport with your partner and share your ideas with the class. e．g. T：Do you like basketball? (Whats your favorite sport？) S1：Sure.I like it very much. T：Do you watch basketball games? S2：Yes.I like to watch the NBA and CBA. T：Do you know the history of basketball game? Step 2　完成教材2b－2c的任務 1．快速閱讀短文，說出每個段落的大意。完成后請學生說出自己的觀點，教師點撥。 Keys：Para.1.The main history of basketball Para.2.How the basketball was invented by James Para.3.The popularity of basketball around the world 2．認真閱讀短文，根據(jù)短文內(nèi)容完成2c的簡圖，然后再添加跟此有關的內(nèi)容，完成后集體核對答案。 Development： invented by James Naismith first game on December 21，1891 became Olympic event in Berlin in the year 1936 most famous games：Americas NBA games popular games in China：CBA games Game： played inside on a hard floor two teams getball into other teams basket Popularity： played by more than 100 million people over 200 countries 3．再次細心閱讀短文，理解每一句話的意思，小組合作解決遇到的疑難問題。 4．教師點撥短文中出現(xiàn)的重點和難點。 5．熟讀短文，識記并背誦知識要點。 6．小結訓練。 D(1)—What do you think of this new movie? —Sorry，I havent seen it.But ____ is believed that the actors are all very famous. A．that　　B．this　　C．which　　D．it A(2)The number of students in my class ____ 60 and a number of them ____boys. A．is；are B．a(chǎn)re；is C．a(chǎn)re；are D．is；is C(3)Basketball ____ in 1861 by James Naismith. A．invented B．is invented C．was invented D．is inventing C(4)Not only my parents but also my grandmother ____ me ____. A．encourage；to hold on to my dream B．encourage；hold on to my dream C．encourages；to hold on to my dream D．encourages；hold on to my dream C(5)We all ____ these national heroes，and we all take pride in them. A．look up B．look forward to C．look up to D．look after D(6)I dream of ____ to the moon one day. A．fly B．to fly C．flies D．flying Step 3　完成教材 2d－2e的任務 1.根據(jù)2c中的簡圖信息和2d中的問題提示，兩人一組互相說出籃球運動的發(fā)展史，然后邀請學生回答。 2．你認為成為一名著名的籃球運動員會怎么樣呢？列出成為著名籃球運動員的好處和壞處。 Step 4　布置作業(yè) 完成《探究在線高效課堂》本課時練習。 第六課時　Section B (3a－Self Check) 復習前面幾個課時學過的重點單詞、短語和句型。 一般過去時態(tài)的被動語態(tài)。 難點 靈活運用一般過去時態(tài)的被動語態(tài)。 自主學習： 復習學過的重點單詞、短語和句型。 課堂導學： Step 1　情景導入 Teacher：Do you have something that you do not like to do？If you do，why not think of an invention that could help you？Now please talk to your partners about your problems and the inventions. Step 2　完成教材3a－3b的任務 1．你有不喜歡的東西嗎？你能想出一個發(fā)明來幫助你嗎？和你的搭檔交流，然后把3a表格填寫完整。 Problem：quickly_taking_notes_in_class New invention: a_special_pen What it is used for：taking_notes_quickly_in_class 2．假設你現(xiàn)在是一名商人，根據(jù)3b方框中所給的句型、短語提示，寫出一篇描述你的新發(fā)明的文章介紹這種新產(chǎn)品，并設法賣給你的同學們。 學生完成后評出優(yōu)秀的作文在班上展示。 常用句型： ①I think …is a very useful invention. 我認為……是一項很有用的發(fā)明。 ②…was invented by… ……是由……(某人)發(fā)明的。 ③…was invented in … ……是在……(某時間)發(fā)明的。 ④It was used of … 它被用來…… ⑤…is made of … ……是由……(材料)制成的。 We often get hurt by the hot water in the cup.So we invented a special cup.This special cup was invented by Ma Peng.It is made of metal and there is a special machine in it. If you want to drink water，you can turn on the button，the machine will work，and the cup can tell you the temperature of the water so that you will not get hurt when you drink water.If you dont drink water，you can turn off the button again.This kind of cup have different shapes and colors，you can choose freely. Step 3　完成教材Self Check的任務 1.兩人一組互相提問Self Check 1的單詞，然后用這些單詞的正確形式完成填空。 Keys：invent　nearly　all of a sudden doubt　websites　mention 2．把Self Check 2中的主動語態(tài)的句子改寫成被動語態(tài)的句子，完成后小組內(nèi)互相交流所寫答案。 Keys：(1)My watch was stolen by someone. (2)Five eggs were used to make this big cake. (3)When was the personal computer invented? (4)We were told not to run in the hallway. (5)The video was taken back to the store. 3．找出你更想了解的一項發(fā)明，根據(jù)提示在橫線上填寫相關內(nèi)容。 4．練習。 (1)During the afternoon, there was a sudden(suddenly) heavy fall of snow. (2)I think the telephone was invented(invent) before the car. (3)The Canadian(Canada) song Alouette(《百靈鳥》) is a fun song about a bird. (4)They were invited(invite) to take part in the May Day celebrations in Beijing. (5)The popularity(popular) of private cars is changing the peoples life style. (6)When the bill was brought(bring) to him, he was so surprised. (7)They gave their lives for their country and were honored asheroes(hero)． (8)We were divided(divide) into eight groups by our teacher last week. Step 4　布置作業(yè) 完成《探究在線高效課堂》本課時練習。