2015年秋九年级英语（冀教版）导学案（无答案）：Lesson 28 The study of Living Things

科 目 英 语 课题 Lesson 28 The study of Living Things
主备人 审核人 学案类型 新 授 学案编号
学 习 目 标 To learn these useful ( http: / / www.21cnjy.com ) words and expressions ：New words： Chip Tayl ( http: / / www.21cnjy.com )or biology butterfly migrate fantastic completely grandchild female milkweed chemical puzzlingExpressions: draw one’s attention 吸引某人的注意 as…as 和…一样 leave for 前往 lay eggs 下蛋，产卵 cut down 砍倒，缩减Patterns: Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention.
To listen and understand the passage about North American butterfly
To review and explain the use of attributive clauses
重点：掌握文中的定语从句：In ( http: / / www.21cnjy.com )Mexico, the butter ( http: / / www.21cnjy.com )flies always return to the same small piece of forest, which is only 20 kilometres wide.The butterfli ( http: / / www.21cnjy.com )es that return to the south are the great-great grandchildren of the butterflies that left for the north.But in Mexico, peop ( http: / / www.21cnjy.com )le cut down the trees that the butterflies need to rest on because they want more land for farming.In the United States and Canada, farmers use chemicals that kill milkweed.
学法指导及使用说明 : 自主学习，合作探究
课前预习:Ⅰ.美洲王蝶，学名“黑脉金斑蝶”， ( http: / / www.21cnjy.com )俗称“帝王蝶”，是北美地区最常见的蝴蝶之一，也是地球上唯一的迁徙性蝴蝶。为躲避加拿大和美国的冬季严寒，数以亿计的王蝶每年冒着死亡危险，前赴后继，穿越美洲崇山峻林的风霜严寒和太平洋的狂风暴雨，南迁墨西哥和古巴等地过冬。王蝶的长途迁移被科学家列为自然界十大奇迹之一。它们每年10月底飞到墨西哥，次年3月再飞返美国和加拿大，单程平均飞行4000多公里，沿途景象蔚为壮观。Ⅱ.预习检测：根据汉语提示完成句子。1. I have a ________ (极好的) social life. 2. The most profound u ( http: / / www.21cnjy.com )nsolved problem in ______ (生物学) is the origin of life itself. 3. Some birds _______ (迁徙) as season changes. 4. I__________ (完全地) agree with these views. 5. The spelling of English is often ________ (令人费解的). 合作展示Language points: （一）定语从句是指在句中作 ( http: / / www.21cnjy.com )定语的______。先行词是被定语从句所修饰的词 （通常是名词或代词）。关系词，也叫作引导词，是在从句中替代先行词，在定语从句中充当一定的成分，通常是______或______，作_____时常可以省略。先行词为人时，引导词常用_____或_____；先行词为物时，引导词常用______或_______。但在下列情况下, 一般用_______而不用______。 1.先行词为all, everything, nothing, something, anything, little, much 等不定代词时。2. 先行词被all, little, much, every, no 等修饰时。3. 先行词被序数词或最高级修饰时。4. 先行词被the only, the very, the same, the last修饰时。5. 先行词为人和物的组合。根据以上的描述，完成以下定语从句的引导词。Who is the girl _____ talked to you yesterday.Look at the photos _______ I took on my trip. It successfully shows the rich culture_____ makes Beijing so famous.The photo________ we liked best was taken by Zhao Min.His father is the person______ will be most unhappy.Tom is the boy ________ we saw in the shop.I am sure she has something ________ you can borrow.I’ve read all the books ________ are not mine.This is the first book__________ he has readThis is the very book ______ belongs to him.They talked ( http: / / www.21cnjy.com )for an hour of things and persons _________they remembered in the school.（二）draw one’s atten ( http: / / www.21cnjy.com )tion 吸引某人的注意力 draw的过去式为_____，过去分词为_______ 例：The wonderful basketball game ________ my attention.(三) as+ adj. /adv. ( http: / / www.21cnjy.com )+as意为“和……一样”，表示同级的比较。否定形式中，前面的as可用so，即not so/as…as…意为“不如…”例：①I think English is ____important ____Chinese. ②you aren’t ____/_____tall _____ your brother.练习：①This film is ____________________ （一样有趣）that one.②Your pen writes ________________________ （一样流畅）mine.(四) lay eggs意思是“产 ( http: / / www.21cnjy.com )卵，下蛋”。lay的过去式为______，过去分词为_______，现在分词为_________例：They only lay eggs about every five years. (五) cut down 砍伐 ( http: / / www.21cnjy.com )；消减 cut的过去式为_______，过去分词为________，现在分词为_________例：We must cut our expenses down in order to live through the whole year. 我们必须减少消费，以便度过全年。练习：①Many trees _____________(cut down)so that the soil was washed away.②the government has ( http: / / www.21cnjy.com ) told us _____ ______ _____ _____(不要砍倒)the trees.
备注（教师复备栏及学生笔记）