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初中英语Lesson 28 The Study of Living Things优秀学案设计
展开Lesson 28 The Study of Living Things 导学案
知识
目标 |
必
会
内
容 | 单词: biology,butterfly,migrate,fantastic,completely,grandchild,female,milkweed, chemical,puzzling 重点词组: grow up,draw one’s attention,as many as…,leave for,cut down 重点句式: 1) Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention. 2) Here, as many as 230 million butterflies spend the winter. 3)The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north. 4) But in Mexico, people cut down the trees that the butterflies need to rest on because they want more land for farming. 5) This is both puzzling and interesting for many scientists. |
【学习目标】
1.重点单词:
biology,butterfly,migrate,fantastic,completely,grandchild,female,milkweed,chemical,puzzling
2.重点词组: grow up,draw one’s attention,as many as…,leave for,cut down
3.重点句式:
(1) The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
(2) This is both puzzling and interesting for many scientists.
【重点难点】
1. 重点:掌握重点短语和句型
2. 难点:定语从句
【导学过程】
一、课前预习
核心单词
1. ________ adj. 奇异的;了不起的;极好的 2. biology n. ________
3. butterfly n. ________ 4. migrate v. ________
5. completely adv. ________ 6. grandchild n. ________
7. female n. ________ 8. milkweed n. ________
9. chemical n. ________ 10. puzzling adj. ________
单词变形
1. completely→________(adj. )
2. grandchild→________(复数)
3. female→________(对应词)
4. puzzling→________(n. )
二、课堂学习
Step 1. 自主探究,合作交流
根据课文内容回答问题
1. What does Dr. Taylor study?
2.________________, The butterflies always return to the same small piece of forest
3. In Mexico , people_______________ he trees that the butterflies need to rest on.
4. ___________________, farmers use chemicals that kill milk weed.
Step 2. 交流展示
1.almost意思是“几乎,差不多”,与nearly意思相近,肯定句中可以互换;nearly 可以和_____________连用,not nearly 是“远不”的意思,但almost 不和not连用;________能和never, no, none, nothing, nobody 等连用
选词填空
1) The money is not_____________ enough for my journey.
2) There was________________ no snow that winter.
2. alive, living 和 live
1)alive 活着的 既可指人也可指物,可做表语或后置定语/活跃的
2) living 既可指人也可指物,在句中作表语或定语
3) live 主要用于指鸟类或其他动物
4) lively 活泼的 有生气的
选词填空:
1) These are all___________ fish.
2) The fish is still______________ .
3) We saw a__________________ snake.
4) He tries his best to make his lessons_____________ and interesting.
3.Here,as many as 230 million butterflies spend the winter.
as…as…意为“与……一样……”,两个as之间可加形容词或副词的_______________;也可加“many+复数名词”,“much+不可数名词”或“形容词+a/an+单数名词”,还可以在as…as…前加twice,half等词表示前后者倍数或分数关系。as…as的否定形式为__________________________。
4.This is both puzzling and interesting for many scientists.
both…and…意为“……和……”,用于连接两个并列成分。both…and…连接两个并列成分作主语时,谓语动词使用__________数形式。both…and…的同义词组为_____________,意为“不仅……而且……”,反义词组为neither…nor…,意为“既不……也不……”。
1) Both Li Lei and Han Meimei_____________ fond of the TV program A Bite of China.
A. is B. am C. was D. are
2) —Tell us something about Canada, OK?
-I’m sorry. _________ Jack _________ I have ever been there.
A. Either; or B. Not only; but also
C. Both; and D. Neither; nor
三、知识点拨:
1.have been doing sth.是现在完成进行时,意为“一直在做某事”,表示从过去某时开始的某个动作或状态一直延续到现在,而且还在进行,常常表示动作的延续性、重复性以及感情色彩等。
2.as...as...意为“与……一样……”,两个as之间可加形容词或副词的原级;也可加“many+复数名词”“much+不可数名词”或“形容词+a/an+单数名词”,还可以在as...as...前加twice,half等词表示前后者倍数或分数关系。as...as的否定形式为not as/so...as...。
3.spend为及物动词,意为“度过,花(钱/时间)”,常用于固定结构:
spend time (in) doing sth./spend money (on) doing sth.花费时间/金钱做某事;
spend time/money on sth.在某物上花费时间/钱;
spend time with sb.和某人一起度过时光。
句子的主语应为人,spend的过去式和过去分词都是spent。
4....that return to the south是定语从句。定语从句是指在句中作定语的从句。
先行词:是被定语从句所修饰的词 (通常是名词或代词)。
关系词的作用:
(1)引导定语从句
(2)在从句中替代先行词,在定语从句中充当一定的成分,通常是主语或宾语,作宾语时常可以省略。
定语从句:关系词(eg.that,which,who)+从句
5.特殊情况下,只能用that引导的定语从句:
(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)先行词被序数词或形容词最高级修饰时;
(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;
(6)主句是who/which开头的特殊疑问句。
6.when to fly south意为“什么时间飞往南方”,是“特殊疑问词+动词不定式”结构。“疑问词+动词不定式”结构实质上是一个名词性结构,它可以改为一个宾语从句,此时从句与主句的主语是一致的。
7.both...and...意为“……和……都”,用于连接两个并列成分。
both...and...连接两个并列成分作主语时,谓语动词使用复数形式。both...and...的同义词组为not only...but(also)...,意为“不仅……而且……”,反义词组为neither...nor...,意为“既不……也不……”。
四、【知识巩固】
Ⅰ.用括号内所给单词的适当形式填空
1.Dr.Chip Taylor is a (biology).
2.This crossword (puzzling) is hard to do.
3.My mother took some (freeze) meat from the fridge.
4.He has (complete) forgotten the place.
5.My black hen (lay) an egg yesterday.
Ⅱ.请给下列的定语从句补充引导词
1.Who is the girl talked to you yesterday.
2.Look at the photos I took on my trip.
3.It successfully shows the rich culture makes Beijing so famous.
4.The photo we liked best was taken by Zhao Min.
5.His father is the person will be most unhappy.
6.Tom is the boy we saw in the shop.
答案:
一、课前预习
核心单词 1.fantastic 2.生物学;生物 3.蝴蝶
4.移居;迁徙 5.完全地 6.孙子;孙女;外孙;外孙女
7.雌性的动物或植物;女子 8.(植)马利筋 9.化学物质
10.令人费解的
单词变形 1.complete 2.grandchildren 3.male 4.puzzle
二、Step 1.自主探究,合作交流:
1. He studies one kiknd of North American butterfly.
2. In Mexico
3. cut down
4. In the U.S. and Canada
Step 2. 交流展示
1. not;almost 1) nearly 2) almost
2. 1) living 2)alive 3)live 4) lively
3. 原级; not as/so…as…;
4. 复; not only…but(also)… 1) D 2) D
四、【知识巩固】
Ⅰ.1.biologist 2.puzzle 3.frozen 4.completely 5.laid
Ⅱ.1.that/who 2.that/which 3.that/which 4.that/which 5.that/who
6.that/who/whom
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