25（九年级）Unit 6 Section A（2a-2d）（教案1）

skybamboo

Unit 6 When was it invented?
Section A（2a-2d）

Teaching Aims	Language goals   1. Students can talk about what an invention is used for. Key words and phrases heel, scoop, electricity, style, project, pleasure, zipper, daily, have a point, website, pioneer, list, mention Key sentences 1. What is it / are they used for? 2. It’s used for serving really cold ice-cream.
Teaching Difficulties	Practice passive voice in the past tense in listening and speaking. Learn when to use passive voice.
Teaching Aids	multimedia courseware or other realia that the T needs for teaching

Teaching Procedures	Tips
Step 1 Warming up
Give Ss a context and ask them to think about solutions for the problems. What inventions can you make to solve these problems? 1. You always hit your toe against something on the way to somewhere at night! 2. You wanted to get a scoop of ice-cream from the bucket, but the ice-cream was too hard!
Step 2Presentation & Practice
Pre-listening Show Ss PPT P9, ask them to look at the picture and answer the questions. 1. What can you see on the table? 2. What is the boy doing? 3. What is the girl doing? 4. What is the scoop used for? 5. What are the shoes used for? While-listening 2a Play the recording, ask Ss to listen and number the inventions in the order they hear. Answers: 3 shoes with special heels  1 shoes with lights  2 hot ice-cream scoop, runs on electricity 2b Play the recording again. Ask Ss to listen and complete the chart. Answers: 1. changing 2. in the dark 3. serving Optional choice: Ask Ss to listen again and answer the questions. 1. Why are shoes with lights needed by people? 2. Why is the hot ice-cream scoop needed by people? 3. How is the style of shoes changed? Post-listening 2c In pairs, get Ss to speak with each other about the inventions mentioned in 2a and 2b. Ask Ss to make their conversations more interesting by coming up with more uses for the three inventions. (Tip: Each S should come up with one alternative use.) Optional choice: Show more interesting inventions (PPT P16-20) to Ss and ask them to tell the usage for each.
Step 3Presentation & Reading
Pre-reading Show a picture of zipper and ask where they can see it. Give some examples to Ss (backpack, jacket, wallet, key chain) and encourage them to think about more things with zippers. While-reading Ask Ss to read the conversation in 2d and answer the questions. 1. Who invented the zipper? 2. When was the zipper invented? 3. When was it first used widely? Play the video for Ss. Ask them to role-play the conversation. Post-reading Ask Ss to think and answer the questions: Are there any other inventions that have great influence on people’s lives? How do they change people’s lives? (Tip: T can also treat these questions as a project. T can ask Ss to work in groups, look up some information about “inventions which have influence on people lives” on net and make a presentation in next class.)
Step 4Language points learning
be used for sth. / doing sth. 意为“被用来做某事”，表示用途或目的，后接名词或动名词，相当于be used to do sth. be used for, be used by和be used as的区别是： be used for意为“用来做......”，后面跟名词、代词或者是v-ing形式，表示目的、用途，相当于be used to do sth。 be used by意为“被......使用者”，后面跟使用者。 be used as意为“被当做......使用”。 My pleasure也可说成It’s a / my pleasure.或 A pleasure.意思是 “我的荣幸；愿为你效劳；这是件愉快的事”。 mention表示“提到；提及”，是及物动词，其后接名词或代词作宾语时，无需用任何介词；另外注意不接双宾语。若后接动词，要用动名词，不能用不定式。not to mention意为“更不用说；还不算”。口语中说Don’ t mention it. 主要用来回答感谢，有时也用来回答道歉。
Step 5 Summary & Homework
Summary Ask Ss to do the exercises on PPT P35. Homework: Preview the passage in 3a. Do the exercises in students’ book.
Teaching Reflection	In this lesson, the most important thing is to learn the passive voice in the past tense and teach students past participle forms.We should learn some new words about this topic in 2d.We can get the students to practice the structure “be used for ... ” “Who was it invented by?” and “It was invented by ...”.