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1、Unit 6 When was it invented ?Section A la-2d【教学目标】：1 .学习关于发明的单词。2.能听懂并能简单地谈论发明史。3.通过开展小组学习活动，能正确地使用一般过去时的被动语态，了解中美发明史的差异，更好地理解人类发 明文化中的瑰宝。【教学重、难点】【学习重点】重点单词及短语：style, project, pleasure, daily, have a point, website, pioneer【学习难点】通过交流表达和听力训练，引入,般过去时的被动语态“was/were+done”。【学法指导】a辨析invent/discover/find/f
2、ind outinvent意为“发明，创造“，主要指通过想象，研究，劳动等创造出前所未有的东西”，尤指“科技上的创造发明”。discover指发现或偶然发现本身就存在但未被认识的事物。find强调找的结果，即“找到”，通常指偶然发现。find out指经过观察，调查，把某事物查出来，意为“搞清楚，弄明白”。情景导入生成问题T： There are many useful things in the world. They help us a lot in life. (Show some pictures on the screen)Question： When were they inven
3、ted?Students(l)The telephone was invented in 1876.(2)The computer was invented in自学互研生成能力Task 1 Let* s read new words and the phrases.1. lean read.(我会读)预习下列单词及短语，争取自己能正确拼读。拼读成功后再在课文中把单词及短语标记 出来。style, project, pleasure, daily, have a point, website, pioneerI can write.(我会写)翻译下列短语：(1)run on electrici
4、ty 用电驱动的(2)be used for 被用于(3)have a point 有道理I can summarize.(我会总结)在上一单元我们已经学习了一般现在时的被动语态，你能总结一般过去时的被动语态吗？*般过去时的被动语态的结构：was/were +及物动词的过去分词(+by) +其他；其否定形式是在was/were后加 not；疑问形式是把was/wcrc放到句首。2. I can translate.(我会译)(1)他们是被用来做什么的？What are they used for?(2)这些鞋子带有特殊的鞋跟。The shoes are with special heels.(
5、3)拉链是由 Whitcomb Judson 发明的。The zipper was invented by Whitcomb Judson.3. I can make conversations.(我会编对话)你能结合课文内容编写对话，来介绍物品发明的时间、发明者及用途等吗？【教学过程】厂情景导入Free talk to lead in the topic： There are many useful things in the world. They help us a lot in life. (Show some pictures on the screen. )When were th
6、ey invented?I-自学互研Tcisk 1 Preview the words on P4142, read the words by phonetic symbols and mark the new words in the text. Finally finish the tasks in la.Task 21. Listen to the tape on P41 and finish the listening tasks in lb. Then students listen to the tape again and finish the tasks in the text
7、.The telephoneIt was 1. invented in 1876.The 2.carsThey were invented in 1885.The TVIt was invented around 3. 1927. They were 4. expensive in those days.The personal computersThey were invented in 5. 1971.2. Listen to the tape on P42, and finish the listening tasks in 2a and 2b. Then listen again an
8、d repeat.Task 3 Read la, 1c, 2c and 2d and finish the tasks in la, 1c, 2c, 2d. Students imitate listening and have a dialogue practice with the sentences： When the things in the pictures in lb were invented? I think3. I can summarize.(我会总结)辨析 be used for, be used to do sth. , used to do sth. , be/ge
9、t used to sth. /doing sth. , be used by 及 use sth. to do sth.(Dbe used for意为“被用于”。介词for表示用途，后接名词、代词或匕-ing。(2)be used to do sth.意为“被用来做”，强调动作，其中used是动词use的过去分词。(3) used to do sth.意为“过去常常做某事”。(4)be/get used to sth. /doing sth.意为”习惯于某事或做某事，其中to为介词。(5)be used by意为“被使用”，介词by后面接动作的执行者。(6)use sth. to do st
10、h.意为“用做”，用于主动语态。米洗披屐First 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 points (they can ask the teacher for help). First the students discuss and check the answers in Task 3, then discuss and set scenes to perfo
11、rm the dialogues. At last write show contents on the blackboard.屐市梃升I can read.Read together, pay attention to the pronunciation of “project； Consolidate the word learning by word game.1. I can write. Students translate the phrases into Chinese by answering quickly； Read together； Spot test： Consoli
12、date the usage of phrases by making sentences.2. I can summarize. Students sum up the usage of simple past tense passive voice and explain.1. I can translate. Ask students to translate the key sentences in Task 3；Read together.2. I can make conversations. Students make dialogues according the task；
13、Set scenes to perform the dialogues； Spot test： Interview in class and design exercises according to the interview.3.1 can summarize.Students sum up the usage of “be used for M ； Spot test： Consolidate it by exercises and check the answers by answering quickly and explain.当堂演练达成Fl标(B ) 1. Columbus America in 1492.A. inventedB. Discovered C. found D. found out( A )2. A pen is writing.A. used for B. used to C. used by D. used as(B )3. Smith a new teaching method(方法).discovered B. Invented C. is discovered D. was invented课后反思：