Unit 23 A famous clock Lesson46（课件）-2025-2026学年新概念英语青少版（2008）5A

Unit 23 A famous clock Lesson 46 Pattern Practice Pattern Practice Grammar Past Perfect Tense Reinforcement Sentence Structure: Main Clause (Past Tense) + Subordinate Clause (Past Perfect Tense) e.g.He applied for the job yesterday, but he’d been thinking about it for ages！ Student Task: ✅ Context Switching: Rewrite sentences using familiar life contexts (mobile phones/exams/travel/etc.) Key Structures Contrastive Practice: ⚡ Fact: The Houses of Parliament burned down → Big Ben was built ⚡ Hypothetical: "If the Houses ______, Big Ben ______" Review KS12-21 The moment you leave this tent, you will get a big surprise. (KS12) By the end of this week, he will have been working with them for six weeks. (KS13) The planes had been planting seed for nearly a month when it began to rain. (KS14) If the British had not feared invasion, it would have been completed. (KS16) must, have to, should and ought to (KS17) Key Structures have(KS18) After having been instructed to drive out of town, I began to acquire confidence. (KS21) Exercises A Underline the verbs in the text. Revise any Key Structures you have forgotten. B Give the correct form of the verbs in parentheses. Do not refer to the text until you finish the exercise. Key Structures 1 When you _______(visit)London, one of the first things you will see is Big Ben, the famous clock which_______(can/ hear)all over the world on the BBC. If the Houses of Parliament _______(not burn)down in 1834, the great clock would never have been erected. 2 Officials from Greenwich Observatory have the clock_______ (check)twice a day. On the BBC you can hear the clock when it actually _______(strike), because microphones_______ (connect)to the clock tower. 3 Once, however, it failed to give the correct time. A painter who _______(work)on the tower hung a pot of paint on one of the hands. Key Structures Exercises C Give the correct form of the verbs in parentheses: 1 I shall have completed this novel by December. By then I________(work)on it for ten months. 2 Now that you ________(finish) work you can go home. D Supply the correct form of should, ought to or have to in these sentences: 1 I couldn't go shopping yesterday afternoon. I ________(go) to the dentist. 2 I really ________(buy)a new car but I can't afford to. 3 I didn't know you would be late. You________ (telephone). Special Difficulties Words often confused Study these examples: a) official, employee, shop assistant Officials from Greenwich Observatory have the clock checked twice a day. (ll.11-13) The Customs official asked me several questions. Over a thousand factory employees went on strike. She works as a shop assistant in a clothing store. b) hang hung and hang hanged A painter hung a pot of paint on one of the hands. (ll.17-19) When the sun came out, she hung the washing on the line. The murderer was hanged. Special Difficulties Exercise Choose the correct words in the following sentences: 1 The (clerk)(shop assistant) who served me was very helpful. 2 I(hanged)(hung) my coat in the hall. 3 Capital punishment has been abolished. Murderers will not be (hung)(hanged) in future. Writing Sentence structure Rewrite this sentence with if... not, then check your answer against the text. The Houses of Parliament had been burned down and that's why the great clock was erected. Writing Composition Write two or three sentences using the ideas given below: Big Ben tells the correct time—— it also tells us when Parliament is in session ——there is a light in the clock tower—— it is kept on until the House closes -sometimes ——it is on all night. Writing Write about you: Looking forward to a visit An English-speaking friend of yours will be touring China soon and is planning to come and visit you and your city. Write him her an email.Begin by saying how pleased you are that he she is coming. In the next paragraph, describe the first place or sight that he she must visit. Write a few lines to explain why this place sight is especially interesting. Say whether there are a number of other sights you can recommend. Finish with a friendly closing sentence and sign off in the usual way. Writing Snow party At nearly two thousand feet above sea level, the Tan Hill Inn is Britain's highest pub. The nearest towns are miles away. Although it stands alone, a long way from the nearest town, the pub is close to where the Coast-to-Coast footpath crosses the Pennine Way. Martha and her friends had often met there for walks when they were at university together, and that was why they had agreed to meet there again on New Year's Eve. Reading Comprehension If they met by midday, Martha said, there ought to be time for a three-hour walk before they came in and settled down in front of the fire. It was snowing steadily as Martha drove up the mountain, and she could feel the force of the wind against the car as they climbed. She was glad of her friends' company in the car and even more relieved when she saw the lights of the Tan Hill Inn ahead. At one o'clock, three more friends arrived, having had a terrible journey. The other three arrived on foot at three ơ'clock, after leaving their car a mile away. They brought with them a family with two young children whose car had got stuck in the snow. The road was blocked lower down, they said. A lot of people needed help. Carrying food and warm clothing, Martha and the others set out into the storm. Four hours later, they had managed to bring back everyone they had found. Forty rescued travellers joined the party. By the time the road was reopened on 3rd January, they were all the best of friends. Reading Comprehension Detectives Thank you! $$