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课件网) Unit 3 Language in use Module 5 Museums By the end of the class, we will be able to: 1. understand the usage of the adverbial clause with if 2. use imperatives to talk about rules; 3. make a guide to a museum using the target language. 学习目标 Memory game：What does this sign mean Warm up No shouting, please! Don’t cross that rope! Don’t be rude! If you ever go to London, make sure you visit the Science Museum. 祈使句（否定形式） if 条件状语从句 + 祈使句 Observe the following examples carefully. What can you find 新课讲授 Language Practice Grammar A: Giving instructions 1. We start a sentence with the base form of a verb when we want to tell people what to do. e.g. Put up a picture on the wall. Paint the walls blue. e.g. Don’t cross that rope! No parking. You must not touch anything. Tim isn’t allowed to play football after 6: 00 p.m. 2. We often add do not / don’t in front of a verb or add no in front of a noun or v-ing when we want to tell people not to do something. We can also use the sentence structure “sb. must not do sth.” or “sb. be not allowed to do sth.”. 3. We often add please in a sentence to make an instruction more polite. e.g. Please fix the shelf for me. Don’t touch the wet paint, please. No shouting, please. if引导的条件状语从句 主句 从句 例句 一般将来时 一般现在时 If he doesn’t work hard, he will fail his exams. (主将从现) 祈使句 一般现在时 If you want to go, tell me. 情态动词 + 动原 一般现在时 If she arrives in time, she may come with us. 过去将来时 一般过去时 If you told him the truth, he wound be angry with you. Grammar B: if 从句 + 祈使句 Match the signs with the rules. 1 No swimming. 2 No football. 3 No right turn. 4 No parking. 5 No littering. 6 No food and drinks. a b c d e f Practice _____ _____ _____ Look at the signs and write the rules. _____ Don’t touch. No smoking. No photos. No entry. Translation. 1.过来看猴子展览！ 2.不要越过那条绳子！ 3.禁止入内。 4.不要无礼！ 5.不必担心。 6.禁止拍照。 Come and see the monkey exhibition. Don’t cross that rope! No entry. Don’t be rude! Don’t worry. No photos. Complete the sentences with the correct form of the words in brackets. 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. want wait go take visit start gets put has send want read Complete the sentences with your own ideas. 1. If you do not like the TV programme, _____. If you want to join our team, practise more after class. 2. If you want to know where you are, _____. 3. If you cannot arrive at the station on time, _____. 4. If you need to ... ...
