Unit 2 Topic 2 Section A课件2023-2024学年仁爱科普版九年级英语上册

Unit 2 Saving the Earth Topic 2 Section A 学习目标 预习检测 知识梳理 课堂总结 学习 导航 重点探究 当堂检测 新课导入 Let's watch a video! 能熟悉并正确运用本课时的重点单词和短语 1 2 进一步了解有关环境污染的一些情况，提高环境保护意识 学习目标 1.Eric arrived on time, _______ it was the rush hour.  A.although　　　　B.because　　　　 C.while　　　 　 D.unless 2._______bad weather it is! It is raining cats and dogs. A.What a B.What C.How D.How a 预习检测 A B 3._____down trees is harmful to human beings, animals and plants. A.Cut B.Cuts C.Cutting D.Cuting 4.All of us need to do something useful _______the environment. A.protect B.protects C.protecting D.to protect 5.Many fans still _____ for airport to see their favorite star, although it is cold outside. A.leaving B.left C.leave D.leaves C D C 知识梳理 Key points 1. What a strong wind! 好大的风啊！ What引导的感叹句： ①What+a/an +形容词+可数名词单数！ （不可数名词如:news, advice, weather） eg: What a busy day! 多么繁忙的一天呀！ ②What+形容词+不可数名词/可数名词复数！ eg: What clean water! 多么清澈的水呀！ Key points 2. As a result, a lot of rich land changed into desert. 结果，许多肥沃的土地已经变成了沙漠。 change… into…（把……变成……） = turn… into… eg: Please change English into Chinese. 请把英语变成汉语。 Key points 3. Trees can stop the wind from blowing the earth away. 树可以防风固土。 ① stop sb./sth. (from) doing sth.= prevent sb./sth. (from) doing sth. =keep sb./sth. from doing sth.（from不能省略） 阻止……做某事 eg: The heavy rain stops us from going out. =The heavy rain prevents us from going out. =The heavy rain keeps us from going out. 大雨使我们无法外出。 Key points ② earth 着重指与天空相对的“土地”，还泛指泥土；soil 主要指用于种植庄稼的“土壤”；ground 主要指大地表面；land 着重指与河、湖、海洋相对应的陆地。 eg: Put the tree in the hole and fill it with earth again. 把树放进坑里，然后用土壤重新把坑填满。 Fish cannot live on land. 鱼不能在陆地上生活。 The little boy was lying on the ground。 小男孩躺在地上。 Key points 4. Although there were sandstorms before, now we have built “The Great Wall”. 虽然之前有沙尘暴，但现在我们已经建起了“绿色长城”， although conj. 虽然，尽管，引导让步状语从句，相当于 though, 只是 although 比 though 更为正式