Unit 4 Steering SystemOverviewSectionClass work-Course BookSection I Listening and speakingEach section is about 40-55minutes. This does not include administration and time spent going through homework.Task 1Picture recognition. Listen and judge.Task 2Read and match. Match the picture and its expression.Task 3Speak out. Ask-and-answer with your partner.Task 4 and Task 5Ss listen to two sample dialogues, fill in the missing information, and practice dialogues according to the situations with their partners.Section II ReadingReading ASs listen and read a passage about power steering.Reading BSs read a passage about steering system. Then they judge some statements, summarize the passage, and translate some sentences from the passage into Chinese. Section III GrammarInverted sentenceSection IV Comprehensive Practice(I) Applied writingCounter-offer(II) PresentationSs choose one of the two tasks, discuss with their partners and give a presentation. For a fast route through the unit, focus mainly on listening and speaking skills. Section I Listening and speaking Ss listen and talk about steering system.Task 1: Ask the class to look at the picture and tell them the meaning of every part if necessary. Tell Ss they will hear five statements and they should judge which part is mentioned in each statement. Play the audio and pause to ask the class for the correct answer. Script:Statement 1: Steering cylinderStatement 2: Oil pumpStatement 3: Oil reservoirStatement 4: Flow-limitingStatement 5: Rack and PinionAnswer: statementpicture1B2C3A4E5DTask 2: Ask Ss to recognize six parts in the picture and the expressions followed. Tell them the meaning of every part if necessary. Tell Ss they will make a match between the picture and its meaning. Check the answers in the class. Answer: ( B )1. rack( C )2. piston( A )3. fluid lines( D )4. rotary valve( F )5. pinion( E )6. trunkTask 3: Tell Ss that they will listen to Dialogue 1 about steering system. Ask Ss to have a browse through the dialogue. Explain some difficult words and phrases if necessary. Ask Ss to be ready to listen to the dialogue and fill in the missing information. Play the audio. Play it a second or third time when necessary. Check the answers around the class. Ask Ss to practice the two dialogues with their partners. For dialogue 2, repeat the teaching activity suggested above. Script: Dialogue 1:Mary: What does steering system mean?David: It consists of steering wheel, gears, linkages and other components.Mary: Oh, I see. They are used to control the direction of a vehicles motion, arent they?David: Yes. Nowadays, many cars use a power-steering system.Mary: I have heard there are two types of power steering systems.David: Yeah. They are hydraulic and electric power steering systems. Mary: Its really complex. Im almost confused with it.Dialogue 2:Mary: This car is very expensive.David: Of course. It is a car with four-wheel steering.Mary: Is it better than front-wheel steering?David: Yeah. it improves steering response and increases vehicle stability while maneuvering at high speed.Mary: Can it improve the stability of the car even through the turn?David: Yes. Im looking forward to owning a car of this kind.Mary: So am I.Answers:Dialogue 1Dialogue 2consistsfour-wheelcomponentsfront-wheelmotionresponseheardvehicleelectricspeedcomplexowningTask 5: Ask Ss to take Task 4 as an example, make their own dialogues with their partners according to the situations provided in the course book. Invite some Ss to present their dialogues in the class. Encourage and praise the Ss performance. Give feedback to Ss, correct Ss grammatical and pronunciation errors.Reference expressions for situation 1 and 2:.be used tobe based onbe divided intoIt consists ofIt improvesIm looking forward toThe answers are open-end. Section II ReadingSs read two passages: Reading A: Power Steering; Reading B: Steering System.Reading A Task 1: Tell Ss they will read a passage about power steering. Ask Ss to have a browse through the passage. Explain the difficult words and phrases when necessary. Tell Ss to listen to the passage and fill in the missing information. Play the audio for the first time to let Ss get the general understanding about the passage. Play it again and pause to ask the class for the correct answers.Script:Power steeringAs vehicles have become heavier and switched to front wheel drive, the effort to turn the steering wheel manually has increased - often to the point where major physical exertion is required. To alleviate this, auto makers have developed power steering systems. There are two types of power steering systemshydraulic an