Unit-6-第3課時(shí)公開課教學(xué)PPT課件【人教版九年級英語】

1、Unit 6 When was it invented? Section A Grammar Focus-Section B 1eLesson ThreeTask 1When was the first car invented?It was invented in 1885.Who was it invented by?It was invented by Karl Benz.Look and talkRevisionWhen was the first television invented?It was invented in 1927.Who was it invented by?It

2、 was invented by J. L. Baird.RevisionWhen was the zipper invented?Its was invented in 1893.Who was it invented by?It was invented byWhitcomb Judson.When was tea brought to Korea?It was brought to Korea during the 6th and 7th centuries.What is the hot ice-cream scoop used for?Its used for serving rea

3、lly cold ice-cream.Active Voice: Alexander Graham Bell invented the telephone in 1876.Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.Grammar FocusPresentation語法小知識一般過去時(shí)的被動語態(tài)Presentation主動語態(tài)被動語態(tài)Somebody cleaned the office yesterday.主語 謂語 賓語The office was cleaned yesterda

4、y. 主語+be+過去分詞 構(gòu)成：一般過去時(shí)的被動語態(tài)由“主語+was/were+及物動詞的過去分詞”構(gòu)成。助動詞 be 有人稱、數(shù)和時(shí)態(tài)的變化，其變化規(guī)則與 be 作為連系動詞時(shí)完全一樣。Presentation現(xiàn)以動詞ask為例，將一般現(xiàn)在時(shí)和一般過去時(shí)被動語態(tài)的肯定式、否定式及疑問式列表如下： 肯定式否定式疑問式 一般現(xiàn)在時(shí) I am asked He/She/ is asked We/You/They are asked I am not asked He/She is not asked We/You/They are not asked Am I asked? Is he/she

5、asked? Are we/you/they asked? 一般過去時(shí) I was asked He/She/ was asked We/You/They were asked I was not asked He/She was not asked We/You/They were not asked Was I asked? Was he/she asked? Were we/you/they asked? Mr. Green _ to sing an English song at the party and he sang well. A. was invited B. invited

6、 C. is invited D. invites2. The waiter told me that free parking _ for the hotel guests. A. provides B. provided C. will be provided D. was provided3. What do you think of the latest TV play the Name of People? Its very popular. Millions of families _ by it during that time. A. attracted B. are attr

7、acted C. were attracted D. were attractingGrammar exercisesPractice4a Rewrite the sentences using the passive voice.1. They sold the fridge at a low price. The fridge was sold at a low price.2. Somebody stole my camera from my hotel room. My camera was stolen from my hotel room.3. Where did you take

8、 these photos? Where were these photos taken?4. Our parents advised us not to go out alone. We were advised by our parents not to go out alone.5. Different writers translated the book into different languages. The book was translated into different languages by different writers.Practice4b. Complete

9、 the sentences with the correct forms of the verbs in the box. 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 i

10、n 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.eat like invite tell lock ring break bringwere inventedwere broughtwas lockedrangwere toldbrokewere eatenlikedPractice4c Decide whether

11、active or passive forms should be used in these sentences. Write the correct forms in the blanks. 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 i

12、nstrument similar to a telephone. Finally, the telephone_ (invent) in 1876.The first sentence that _ (say) on the telephone by Mr Bell was “ Mr. Waston, come here; I want to see you .” Today the telephone_ (use) around the world.was inventedwas bornwas inventedwas saidis usedworkedlearnedProductionT

13、ask 2What food do you like best?potato chipscheeseice creamsalted eggsFree talkPre-listeningwatermelonslemonsred bayberriesPre-listeningsweetcrispysaltyHow do they taste?sourPre-listening1a The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have mo

14、re than one word. _ _ _ _ _ _ _ _sweet crispy salty sourcrispysaltysoursweetsaltyPre-listening1b Write the name of a different food after each word.sweetcrispysaltysour_bananabiscuit, potato chips, fried chickensalted eggs, cheesegrape, lemon, vinegarPre-listening 1. Potato chips were invented by mi

15、stake. T F 2. They were invented in 1863. T F 3. The customer thought the potatoes were not thin enough . T F 4. The customer said they were not salty enough. T F 5. George wanted to make the customer happy. T F 6. The customer was happy in the end . T F1c Listen and circle T for true or F for false

16、.While-listening1d Listen again. Complete the sentences.The History of Potato ChipsDo you know how potato chips were invented? Potato chips_ by a cook called George Crum. They were invented in . George Crumcut the potatoes really, really and then cooked them for a long time until they were _. Finall

17、y he put lots of salt on them so they were _. were invented1853thin crispyreally saltyWhile-listening1e Make a conversation about the invention of potato chips. Use the information in 1c and 1d.Did you know potato chips were invented by mistake?Wow, I didnt know that. Who invented them?Post-listenin

18、gIts said that they were invented by a cook called George Crum.Post-listeningSummaryKey words and phrases:fridge, low, somebody, translate, lock, ring, earthquake, sudden, bell, biscuit, cookie, musical, instrument, sour, customer, all of a sudden, by mistakeKey sentences:When was the zipper invented? Its was invented in 1893.Who was it invented by?It was invented by Whitcomb Judson.When was tea brought to Korea?It was brought to Kore