1、第四课时 Section B (1a1e)【学习目标】1能够通过听说学习与食物有关的词汇。2让学生通过阅读理解如何用一般过去时的被动语态描述发明史。【学习重点】重点单词及短语：sour，by mistake【学习难点】学会用一般过去时的被动语态对更广泛的发明进行描述。学习提示Teacher helps students to reviewthe words about food by asking：How doestaste？Encourage students to recall more adjectives to describe these fruits and food.Task 1
2、学习提示Preview the words on P45，read the words by phonetic symbols and mark the new words in the text.Finally finish the task of 1a.Task 2学习提示Listen to the tape on P45 and finish the listening tasks in 1c.Then students listen to the tape again and finish the listening task in 1d.Listen to the tape for
3、third time，finish the complementary tasks.( A ) 1.When were potato chips invented?AIn 1853.BIn 1850.CIn 1835.( B )2.Who invented the potato chips?AA customer.BA cook.CA boss.( C )3.Why was the plate of fried chips sent back?ABecause they were crispy.BBecause they were cut thin.CBecause they were cut
4、 too thick.来源:gkstk.Com情景导入 生成问题T：Do you know how the apples can taste?S1：Yes.They may taste sweet.T：And the oranges?S2：sweet bananas；crispy potato _chips；salty noodles；sour grapes.自学互研 生成能力Task 1 Lets read new words and the phrases.1I can read.(我会读)预习下列单词，争取自己能正确拼读。拼读成功后再在课文中把单词标记出来。crispy，salty ，s
5、our，by mistake，customer2I can write.(我会写)翻译下列短语：(1)more than one 不止一个 (2)thin enough 足够薄(3)in the end 最后Task 2 Lets listen to the tape and finish 1c，1d.Task 3 Lets make conversations and interview.1I can translate.( 我会译)(1)你知道土豆片是在无意中发明的吗？Did you know potato chips were_invented_by_mistake?(2)顾客认为土豆不
6、够薄。The customer thought the potatoes were not thin_enough.(3)最后他在它们上面撒了许多盐以使它们足够咸。Finally he put lots of salt on them so they were salty enough.2I can make conversations.(我会编对话)你能结合课文内容编写对话，讨论薯片的发明过程吗？A：Did_you_know_potato_chips_were _invented_by_mistake?B：Wow ，I_didnt _know_that.Who_invented_them?A
7、：They _were_invented_by_a_chef_called_George_Crum.B：When _were_they_invented?A：They _were_invented_in_1853.B：How_were_they_invented?A：George_Crum_cooked_ them_for_a_long_time_until_they_were_crispy.And_he_put_lots_of_salt_on_them_so_they_were_really_salty.( A ) 4.What did people think of the thinlys
8、liced，salty chips? 来源:学优高考网AThey liked them very much.BThey no longer ate them.CThey hated them.( C )5.What is the passage talking about?AA car accident.BThe way of cooking 来源:学优高考网gkstkpotato chips.CThe invention of potato chips.【学法指导】mistakemistake作名词，意为“错误”。by mistake是介词短语，意为“错误地”；make a mistake意
9、为“ 犯错误”。mistake作动词，意为“弄错，误解”。mistakefor 意为“把误当作”。enoughenough作形容词时，enough n.n.enough ；enough作副词时，adj./adv.enoughto do意为“够而能做”。Task 3学习提示【备注】结合1c和1d完成教材1e 的任务，要求学生模仿听力内容，进行对话练习，谈论物品的发明者，发明时间等。According to 1C and 1d complete textbook 1e task，require students to imitate the listening，carry on the conve
10、rsation practice，talk about the invented of the objects invented time and so on.3.I can summarize.(我会总结)归纳until的用法：(1)until用于肯定句中，意为“( 一直到)为止”，主句中的谓语动词必须是延续性动词，表示这一动作或状态延续到until状语所表示的时间为止。(2)until用于否定句中，即notuntil，意为“直到才”。它表示主句的动作直到until 状语所表示的时间才发生。若主句为将来时，从句常用一般现在时。交流展示 生成新知来源: 学优高考网Show in groups.
11、(Time：six minutes)Task 1First the students read the words and phrases in groups，then read together and sum up the usage of the words in groups，mark the difficult words in pronunciation and understanding(they can ask the teacher for help)At last write them on the blackboardTask 3First the students di
12、scuss and check the answers in Task 3 in groups，then discuss and set scenes to perform dialogues.At last write show contents on the blackboard.Class show.(Time：sixteen minutes)Task 11I can read.Read together，pay attention to the pronunciation of “crispy” and “customer”；Consolidate the word learning
13、by word game.来源:学优高考网2I can write.Students translate the phrases into English by answering quickly；Read together；Spot test： Consolidate the usage of phrases by making sentences.Task 21I can translate.Ask students to translate the key sentences in Task 3；Read together.2I can make conversations.Studen
14、ts make dialogues according to the task；Set scenes to perform the dialogues；Spot test：Interview in class and design exercises about dialogue completion according to the interview.3I can summarize.Sum up the usage of “until”； Spot test：Consolidate the usage of“until”by making exercises themselves，then check the answers by answering quickly and explain.当堂演练 达成目标1那消息使我悲伤。The news makes me sad.2我终于使那顾客满意。I made the customer happy in the end.3它们不够咸。They were not salty enough.4你知道薯条的历史吗？Do you know the history of potato chips?课后反思 查漏补缺收获：_困惑：_
