Unit 5 Lesson 28 课件2023-2024学年冀教版英语九年级全册

Unit 5 Lesson 28 The Study of Living Things 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 蝴蝶破茧成蝶的全过程 1.掌握单词：biology, butterfly, migrating, fantastic, grandchildren, female, chemical 掌握短语：draw one’s attention, return to…, as many as, lay eggs 2.了解并掌握定语从句的基本知识点 3.了解关于大自然生物的知识 学习目标 预习检测 1.Don't cut down the trees ______ the butterflies need to rest on. A. that B. what C. who D. where 2.There are many mysteries to ______ by scientists. A. discover B. discovering C. be discovered D. be discovering A C 3.All the butterflies have left ______ the north in spring. A. to B. for C. at D. from 4.Our teacher often encourages us ______ hard. A.work B. to work C. working D. to working 5.The exciting thing has ______ these boys' attention. A. left B. drew C. given D. drawn B B D 知识梳理 1.Fantastic facts about the butterfly have been drawing Dr.taylor 's attention. drawing one's attention 意为“引起某人的注意”， 与call one's attention 同义。 此处attention用作不可数名词，意为“注意，留心”。 e.g.The facts drew some people's attention. 2.Here ,as many as 230 millon butterflies spend the winter. as many as 意为“多达......” e.g.There are many as 3000 as students in our school. 否定形式：not as/so... as... 3.Here, as many as 230 million butterflies spend the winter. e.g. Well, I spend a lot of time watching movies. spend:度过，花(钱/时间) 过去式和过去分词都是spent。 相关短语：spend time/money(in) doing sth. spend time/money on sth. spend time with sb. 4.The experiments that we did yesterday were fantastic. that引导定语从句,关系代词that代替先行词experiments在定语从句中作did的宾语,可省略。此时,也可使用关系代词which。 【拓展】在下列情况下,关系代词只能使用that而不能使用which: 不定代词作先行词时;先行词前有序数词或形容词的最高级时;先行词中既有人也有物时;先行词前有the only, just, next等词修饰时;当主句是who/which开头的特殊疑问句时。 美洲王蝶的迁徙 1.Would you like to be a biologist when you grow up? Why or why not? Free talk: Think about it! 2.What mysteries of nature do you know about? 探究一 美洲王蝶是栖息在北美地区的一种色彩斑斓、身体硕大的蝴蝶。每年10月底至来年3月初，上亿只美洲王蝶从美国东北部和加拿大南部飞越4500多公里来到温暖的墨西哥中部林区越冬和繁衍。 Click to watch the video.