Unit 5 Lesson 27 教案 2023-2024学年冀教版英语九年级全册

Unit 5 Lesson 27 教学目标 telescope, solar, unless, double, mystery ①Try looking through the other end. ②Maybe Brian and I can join you after supper. ③Scientists use huge telescopes when they look for planets. ④Well, it’s worth a try, even if I don’t find a planet. 核心素养 实践创新 1.劳动意识：能够用英语谈论太阳系及如何使用望远镜。 2.技术运用：认识宇宙，激发对宇宙的探索欲望。 教学重点 掌握本课节的重点单词、短语和句型。 教学难点 能够用英语谈论太阳系及如何使用望远镜。 教学过程 一、导入新课 Lead in Do you know any of the planets in the solar system? Ask and answer What would you like to look at with a telescope? It’s solar system. /ˈsəʊlə/adj. 太阳的，关于太阳的 Do the earth, the sun and the moon belong to the solar system? It’s called the Milky Way. Our solar system is in the Milky Way. The Milky Way has more than five hundred billion stars. New Words telescope/ˈtelɪskəʊp/ → mystery/ˈmɪstri/n.奥秘 certainly = sure adv.当然，确定 double/ˈdʌbl/n.& adj.&adv.两倍（的），双倍（的） 二、新课讲解 Lead in Think about it 1.Would you like to be a biologist when you grow up? Why or why not? 2.What mysteries of nature do you know about? Pre-reading Words biology n. 生物 butterfly n. 蝴蝶 migrate v. 迁徙; 移居 fantastic adj. 奇异的 completely adv. 安全的 grandchild n. 孙子(女)；外孙(女) female n. 雌性 milkweed n. 马利筋（一种植物） chemical n. 化学物质 puzzling adj. 令人费解的 While-reading Useful expressions: 1.引起某人的注意 draw one’s attention 2.回到、返回 return to… 3.多达 as many as 4.下蛋 lay eggs 5.在大学里 at a university 6.小片的森林 small piece of forest 7.动身去某地 leave for 三、语言点 1.I don’t think you can find one unless you have a bigger telescope. 我认为你不会找到的，除非你有一架更大的望远镜。 unless为连词,意为“除非,如果不”，相当于if…not… ，引导条件状语从句。 当主句是一般将来时态、祈使句或谓语中含有情态动词或主句是一般现在时, 从句中要用一般现在时代替一般将来时。 I will be very angry unless you go with me. =I will be very angry if you don’t go with me.如果你不和我去, 我会很生气。 You will miss the bus unless you hurry up。 除非你快一点，否则你会误车。 Don’t ask me to explain unless you really don’t understand. 不要叫我解释, 除非你真的不懂。 2.Actually, double the size of your house. 确切地说，有你房子的两倍大！ double 作动词，意为“使加倍，翻倍” The number of the houses her