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1、Section D . Material analysis 本课是九年级第四单元第一话题的第四课时。主活动是 1a 和 Project。1a 通过介绍古今人们如何定位来继续学习一般过去时的 被动语态，同时让学生初步接触并理解现在完成时的被动语态和含情态动词的被动语态。语法和功能部分则让学生通过填空来归纳 总结过去时的被动语态和一些常用的功能句。Project 部分则体现了“在做中学”的理念。让学生用英语来介绍自己的发明，无疑会 巩固本话题的语言知识并进一步培养和提高学生“用英语做事情”的能力。 . Teaching aims 1. Knowledge aims： 掌握本课的重点词汇和短语，归纳
2、总结一般过去时的被动语态。 2. Skill aims: 能够理解其他形式的被动语态。如: 现在完成时的被动语态和情态动词的被动语态。 能够在听、说、读、写活动中正确地运用被动语态。 . The key points and difficult points 1. Key points: Words and phrases: mark, explorer, system, man-made, find out, as long as, be used to do sth. Sentences: This method worked well at night as long as the we
3、ather was good and the stars could be seen. Today, the problem has been solved by the Global Positioning System. It can also be used to study the shape of the earth. Grammar: was/were +pp 2. Difficult points： The GPS is a great invention that helps us explore our planet and discover where we are. .
4、Learning strategies 通过语法和功能部分的归纳总结来内化所学的语言知识。 通过参与讨论 1a 的问题来感知、预测文章大意。 通过 Project 的设计活动，介绍自己的发明来提高口头表达能力。 . Teaching aids 指南针/小黑板/ppt 等。 . Teaching procedures Stage (time period) Interaction patterns Teacher activityStudent activityRemarks 1 Revision (12mins) Individual work Step1: Let the Ss comple
5、te Grammar and Functions and check the answers. T: Boys and girls, lets begin our class with some exercises. Please complete the blanks in Grammar and Functions. When you finish, raise your hand. T: I am going to check the answers. You had better answer in full sentences. xxx, would you Complete Gra
6、mmar and Functions and check the answers. S1: Yes. The radio was invented by Guglielmo Marconi in 1895. S2: When was the digital camera developed? It was developed in the Class activity Group work like to answer the first one? T: Great! How about the second one? Step2: Let the Ss sum up the usage of
7、 passive voice. T: You all did very well just now. Next, lets sum up the passive voice. What kind of passive voice did we learn first? T: Could you tell me how to use it? T: Superb! What was the second? T: How about the structure? Step3: Write down some Chinese sentences on the Bb or on the screen.
8、Let the Ss put the sentences into English alone and then check the answers in groups. Let the group leaders collect all the mistakes. T: Now, look at these sentences and put them 1970s. S3: Where was it developed? It was developed in Japan. S4: Sum up the usage of passive voice. Ss: 一般现在时态的被动语态。 Ss:
9、 am/is/are+pp Ss:一般过去时态的被动语态。 Ss: was/were+pp Put the sentences into English alone and then check the answers in groups. into English alone. Check the answers in groups. The group leaders should collect the mistakes in your group. When you finish, raise your hand. Example: 1.这种火箭是由中国在二十世纪七十年代制 造的。 2
10、.我的自行车昨天被盗了。 3.第一部手机是由马丁库伯 （Martin.Cooper）发明的。 4.这条毛巾是用竹子做的。 5.X光机被用来诊断疾病。 T: Now, lets check. Group 1, what are the mistakes in your group? T: Who can solve this problem? T: Good explanation! How about you, Group 2? S1:xxx has difficulties in choosing present passive or past passive. S2:通过观察时间标志词来确
11、定。 如第1，第2题都有时间标志词。 第3、4、5题虽然没有明显的时 间标志词，但是我们可以通过常 识判断。 S3: 2 Pre-reading (3mins) Class activity Step1: Present a compass. Ask and answer questions. Move to 1a. T: What is it? T: Yes. Its a compass. When was it invented, do Answer questions. Ss:指南针。 Ss:北宋。 you know? T: Who invented it? T: What is it
12、used for? T: Yes, you are right. Today, well learn how people know the directions. Step2: Let the Ss read the questions on page 88. Learn the new word explorer. T: Now, before reading the passage, you had better read the questions on page 88. You can learn the word “explorer” by word formation “expl
13、ore (v)+er=explorer(n)”. S1: Its said that Emperor Huang invented it. S2: Its used for giving directions. Read the questions on page 88. Learn the new word explorer. 3 While-reading (8mins) Individual work Step 1: Let the Ss read 1a and find the answers to Question1, 2 and 3. T: Now, read 1a and fin
14、d out the answers to Question1, 2 and 3. When you finish, raise your hand. T: I think we should check the answers now. xxx, could you please answer Question 1? T: Wonderful! Question 2, who? Read 1a and find the answers to Question1, 2 and 3. S: The early explorer used the stars to know where they w
15、ere. S2: In bad weather, people couldnt see the stars, so this Group work T: What is a GPS, who knows? Step2: Let the Ss discuss what the GPS will be used for in the future. T: We know GPS is useful to us. What is it used for now? T: Oh, you have good knowledge of GPS. Now, please discuss what the G
16、PS will be used for in the future. T: Have you finished discussing? T: Which group wants to be the first? T: Smart idea. But how do you make it come true? T: Other groups? method didnt work. S3: GPS is like a man-made star. Its very useful to us. People can use it to find out their position. Discuss what the GPS will be used for in the future. S1: Its used for transportation. S2: Its used for sending satellites. S3: Its used for planes. S4: Ss: Yes. S1: We can use it
