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

Unit 5 Lesson 27 We will learn The new words: telescope, solar, unless, double, mystery Important and difficult points: 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. Do you know any of the planets in the solar system? Lead in Ask and answer What would you like to look at with a telescope? Do the earth, the sun and the moon belong to the solar system? It’s solar system. / s l / adj. 太阳的, 关于太阳的 5 Our solar system is in the Milky Way. It’s called the Milky Way. The Milky Way has more than five hundred billion stars. 6 New Words telescope / tel sk p/ mystery / m stri/ n.奥秘 double / d bl/ n.& adj.&adv. 两倍(的),双倍(的) certainly = sure adv.当然,确定 Lead in 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? Think about it 9 10 生物 蝴蝶 迁徙; 移居 奇异的 完全地 孙子(女);外孙(女) 雌性 马利筋(一种植物) 化学物质 令人费解的 biology n. butterfly n. migrate v. fantastic adj. completely adv. grandchild n. female n. milkweed n. chemical n. puzzling adj. Words Pre-reading 11 1.引起某人的注意 2.回到、返回 3.多达 4.下蛋 5.在大学里 6.小片的森林 7.动身去某地 draw one’s attention Useful expressions: return to… as many as lay eggs at a university small piece of forest leave for While-reading 12 Language points 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。 作动词,意为“使加倍,翻倍” 2.Actually, double the size of your house. 确切地说,有你房子的两倍大! double The number of the houses here may double in 5 years. 五年内这里的房屋数量可能会翻倍。 We’d like a double room. 我们想要一个双人间。 作形容词, 意为“双倍的,两倍的,两用的”,在句中作定语或表语。 3.