课件27张PPT。When was it invented?
Section B(1a-1e)Unit 61.会听说读写下列词汇：crispy; salty; sour; by mistake; customer；thin enough; salty enough; make the customer happy; in the end; potato chips
2. 能正确使用语法要点中的句型：
（1）Potato chips were invented by mistake.
（2）The customer thought the potatoes thin enough.
（3）The customer said they were not salty enough.
（4）George wanted to make the customer happy.
（5）The customer was happy in the end.
理解并讨论薯条的发明。熟练运用语法要点中的句型和他人对话；一般过去式被动语态的用法。
learning aims:adj. 脆的；酥脆的
adj. 咸的
adj. 酸的；有酸味的
错误地；无意中
n. 顾客；客户
Words andExpressionscrispysaltysourby mistakecustomerTask 1、目标呈现Pre-class 根据汉语提示写出下面单词、短语
1）酥脆的 2）咸的
3）酸的 4）甜的
5）客户，顾客
6）错误地
7）足够薄的
8）使顾客高兴
9）撒许多的盐
10）被由谁发明
11）很长一段时间
12）最后
crispysaltysoursweetcustomerby mistakethin enoughmake the customer happyput lots of saltwho was it invented byfor a long timein the endWhat’s this? How does it taste? It is lemon. It tastes sour.potato chips What’s this? How does it taste?crispy, salty What’s this? How does it taste?sweet ice creamsalted duck egg saltyWhat’s this? How does it taste?Write the name of a different food after each word.sweetcrispysaltysourbanana, watermelonpeach,cucumber potato chips, salted eggsorange, lemon1bT F Listen and circle T for true or F for false.1. Potato chips were invented by mistake. 2. They were invented in 1863.T F 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 customer was happy in the end.T F T F T F T F 1cback in 1853.loved thepotatoes.didn’t want 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 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 ______________.were invented1853thincrispyreally salty1d再听录音，补全对话。Boy 1: Hey, did you know that potato chips were invented ____________?
Boy 2: Really? What do you mean?
Boy 1: Well, here on the bag it says that they were invented by _______________ called George Crum.
Boy 2: When was that?
Boy 1: Oh, it was back in 1853.
Boy 2: So, why was it an _______________?
Boy 1: Well, one day, a customer came in to the restaurant where George worked. He ordered a plate of fried potatoes. When the potatoes came, he said they __________ too thick and sent them back to the kitchen.
Boy 2: So what happened?
Boy 1: Well, George was angry, so he cut the potatoes really, really thin, and he cooked them for a long time until they were _________. And he put lots of salt on them so they were really ___________. He thought the customer would hate them.
Boy 2: And?
Boy 1: And the customer loved them and asked for more. He told the other customers about them, and soon everyone was ordering thinly cut, crispy, salty potato chips.
Boy 2: And we’re still eating them today. What a cool story!by mistakea cookwere cutcrispysaltyaccidentMake a conversation about the invention of potato chips.
Did you know potato chips were invented by mistake?
Really?What do you mean?1eMake a conversation about the invention of potato chips.
Well,here on the bag it says that they were invented by a cook called George Grum.
When was that?Make a conversation about the invention of potato chips.
Oh,it was back in 1853。
So,why was it an accident?Make a conversation about the invention of potato chips.
Well,one day,a customer came into the restaurant where George worked.He ordered a plate of fried potatoes.When the potatoes came,he said they were cut too thick and sent them back to the kitchen.
So what happened?Make a conversation about the invention of potato chips.
Well,George was angry,so he cut the potatoes really,really thin,and he cooked them for a long time until they were crispy.And he put lots of salt on them so they were really salty.He thought the customer would hate them.
And?Make a conversation about the invention of potato chips.
And the customer loved them and asked for more. He told the other customers about them, and soon everyone was ordering thinly cut,crispy,salty potato chips.
And we're still eating them today.What a cool story!Exercise 1.顾客最后终于高兴了。
The customer was happy _____ _____ ______.
2.他发现他错把Sally的眼镜镜装进他的书包里了。
He found that he had put Sally's glasses into his schoolbag ___ ________ .
3.乔治想让顾客高兴。
George wanted ____ _____the customer____
4.薯条是一个名Crum的厨师发明的
The potato chips _____ _________ by a cook _______ Crum.
in the endby mistake to make happy
were invented called4.薯条是一个名Crum的厨师发明的
The potato chips _____ _________ by a cook _______ Crum.
5. 昨天这个厨师往鱼上面撒了许多盐。
The ______ _____ lots of salt the fish
yesterday.
were invented cook put oncalled用所给词的正确形式填空。 1. The TV ____________ (invent) around 1927.
2. They are used for _______ (see) in the park.
3. This kite _________ (make) by Uncle Wang.
4. Tea ______________ (discover) a long time
ago.
5. Our classroom _________________
(should clean) every day.
was invented seeingwas made was discoveredshould be cleanedThe potato chips were invented by mistake.
薯片是无意中被发明出来的。
by mistake意为“错误地, 无意中”，常置于句末。
【经典习题】完成句子：
很抱歉我错拿了你的书包。
I’m sorry that I took your schoolbag
___ _______. by mistake拓展延伸
mistake为名词时，还可构成短语：make a mistake （犯错误）
mistake为动词时，常用于mistake…for… （把……误认为……）
I mistook Kate for her sister when I met her yesterday. 根据句意和首字母提示补全单词。
There were four famous inventions in a______ China.
2. These cars were p_______ by the
same company.
3. Few pears r________ on the trees after the heavy rain.
4. I don’t like the t_____ of the meat.ncientroducedemainedaste— “Frog”, Mo Yan’s latest novel, please!
— Sorry, it ____ just now. But it will come out again soon.
A. sold out B. is sold out
C. has sold out D. was sold out It ____ last week that the haze(雾霾) in Beijing caused many problems.
A. reports B. reported
C. is reported D. was reported 1. Finish the exercise on workbook.
2. Preview the new words we will use in the next lesson.
Homework
