Unit 3 Language in useTeaching modelRevision and application Teaching methodFormal and interactive practice, task-based approach.Teaching aimsTo summarize and consolidate if-clause, the imperative sentence and the new vocabulary.Teaching aidsRecorder, OHP, handoutsTeaching StepsStep 1 Language practice1. Read through the example sentences in the box with the whole class.1) No shouting, please!2) Dont cross that rope!3) Dont be rude!4) If you ever go to London, make sure you visit the Science Museum.2. Ask the students to repeat the sentences in the box.Step 2 Grammar1. No shouting, please! 请勿喧哗!Dont cross that crop! 不要越过那条绳子！No photos. 请勿拍照。2. 表示“禁止做某事”的结构，它的主要构成形式有：1) No + 动名词No smoking. 禁止吸烟。No shouting. 请勿喧哗。No joking! 不要开玩笑！2) No + 名词No photos. 请勿拍照。No entry. 请勿入内。3) 祈使句Dont touch. 请勿触摸。Keep clear of the door. 请勿靠近门。Dont make any noise. 不要吵闹。Keep off the grass. 请勿践踏草坪。Step 3 Practice1. Explain the differences in meaning.1. Ask the students to read through the rules.1) No swimming. 2) No football. 3) No right turn.4) No parking. 5) No littering. 6) No food and drinks.2. Look at the signs carefully.3. Match the signs with the rules.4. Ask the students to check with a partner.5. Check the answers: Keys: a. 3 b. 6 c. 2 d. 5 e. 1 f. 42. Look at the signs and write the rules.1. Ask the students to look at the signs carefully.2. Look at the signs and write the rules.3. Ask the students to check with a partner.4. Check the answers: Keys: 1. Dont touch. 2. No smoking. 3. No photos. 4. No entry.Step 4 Grammar.if引导的状语从句。if引导的状语从句不是指已经发生的事件，而是指能够发生或可能发生的事件。if从句+祈使句，相当于汉语的“如果，就”。1. if从句的构成，例句： If you want to go, please tell me. 如果你想去的话，请告诉我一声。If you want to know more about it, call now.如果你想了解更多内容，现在就打电话吧。If you want to know what to see, look at the guide. 如果你想知道可参观的内容，就读一下指南吧。if后面通常接一个完整的句子作从句。2. if从句的位置 if引导的从句可以放在主句之前，也可以放在主句之后。例如： If you ever go to London, make sure you visit the Science Museum. 如果你去伦敦，一定要去参观科学博物馆。可以改写为： Make sure you visit the Science Museum if you ever go to London.3. if从句的用法 本模块主要学习并运用“if从句+祈使句”这种结构来表达建议。比如说，如果对方生病了，你建议他去看医生，就可以说： If you do not feel well, please go to see the doctor. 你如果感觉不舒服，就去看医生吧。 Step 5 Complete the sentences.1. Ask the students to read through the sentences in Activity 3. 1) If you _ (want) to see old machines, _ (go) to the museum.2) If you _ (visit) London, _(take) a boat trip on the river.3) If the computer does not _ (start) immediately, _(wait) for one minute.4) If the weather _ (get) colder, _ (put) on more warm clothes.5) If any student _ (have) a high fever, _ (send) him / her to the school doctor at once.6) If you _ (want) to know how it works, _ (read) the book.2. Complete the sentences with the correct form of the words in brackets.3. Ask the students to check with a partner.4. Check the answers: Keys: 1. want, go 2. visit, take 3. start, wait 4. gets, put 5. have, send 6. want, readStep 6 Complete the sentences.1. Ask the students to complete the sentences with their own ideas.If you want to join our team, practice more after class.1) If you do not like the TV programme, read a book instead.2) If you want to know where you are, ask someone.3) If you cannot arrive at the station on time, call your friends and let them know4) If you need to seed an email, use the computer at the back of the classroom2. Ask the students to check with a partner.3. Check the answers: Step 7 Work in pairs1. Work in pairs. Ask and answer questions about the museum.Science and Technology MuseumOpening hours9:0017:00 TuesdaySunday ChargeFreeWhat is onGround floor: Ancient TechnologyFirst floor: Modern TechnologySecond floor: Space TechnologyThird floor: Medical TechnologyPlease noteNo shouting.No food.No smoking.No pets.No littering.Contact usInformation desk: 7323 8299Email: informationSATM.com2. Ask and answer questions about the museum like this:What can you see at the museum?You / can see an exhibition about-What should you pay attention to in the Science and Technology Museum?-I should have done: no shouting. No food3. Now write some advice for visitors. Use If.If you want to see ancient technology, go to the ground floor.If you want to see modern technology, go to the first floor.If you want to visit the museum, leave your umbrella at the entrance.dont arrive after 5 pm.walk, dont run. Step 8 Complete the sentences.1. Ask the students to the words in the box in Activity 6.at between inside into next to on2. Ask the students to read through the sentences in Activity 6. 1) The Science and Technology Room is _ the third floor.2) Take the lift to the third floor. It is