人教版模块8Unit 2 Cloning课文学案

Unit 2 Cloning课文学案
课题: Unit 2 Cloning (模块8)
学习目标: Learn the text on the 11th page
教学重点：Get the main idea and learn the language points
(了解文章大意掌握相关知识点)
课堂前置 1 准备上个导学案的检查
2 阅读课文内容并完成下面Step 2中关于课文理解的练习
Teaching Steps ；（教学步骤）
Step1 Have a check about the last lesson(检查上节课内容)
Step 2 Reading 读课文完成下面的问题
Fast reading
1. The main idea of the text is____
A. animal cloning is very valuable and can benefit the world.
B. animal cloning could be misused by bad people so it must be forbidden.
C. animal cloning is well developed because Dolly the sheep was born.
D. animal cloning raised arguments and scientists are not sure about its future.
2. What about the writer’s attitude toward cloning in this passage
A. The writer is against cloning.
B. The writer is in favor of cloning.
C. The writer is neutral towards cloning.
D. The writer is in agreement with cloning.
3. It can be inferred from the passage that a cloned animal ______.
A. usually lives as long as the original one
B. usually lives longer than the original one
C. usually dies earlier than the original one
D. is usually as healthy as the original one
4. What is people's fear about human cloning Which of the following is wrong
A. Cloned Hitlers would do harm to the world.
B. Cloned people may be killed at will for medical aid.
C. A woman would have difficulty recognizing her real husband.
D. Men will die out because a woman can give birth to a baby without a husband.
5. We can infer from the last three paragraphs that ___.
A. the normal development of Dolly had no effect on the cloning of other species.
B. Dolly’s serious d isease and final death disturbed the whole world.
C. Dolly successfully cloned a new lamb with the help of cloning scientists.
D. there were arguments about animal cloning and concerns about the future of cloning. Ture or false
means making a copy of an animal or a plant.
can make a lot of money by cloning plants.
animals is as complicated as cloning plants.
4. Dolly the sheep was the first successful clone of a mammal
clones happen in animals as will as in plants.
Step 3 Learning the language points by yourselves.
1 ne w problems arise 新的问题出现
2 use sth. to do 使用…做
3 medical research医学研究
4 attempt to do 企图做
5 remove from 清除掉
6 take out of 取出拿出
7 grow into an embryo 成长为胚胎8 follow the progress 关注进程
9 be appropriate to/for 适合于…适当的10 open one’s eyes 开阔眼界
11 have a great impact on the media and public 对媒体和公众有重大影响
12 attain one’s ambitions 实现野心13 moral questions 道德问题
14 reform the legal systems改革司法制度15 extinct wild animal灭绝的野生动物
16 pass on 传递流传17 die of the illness 死于疾病
18 lead a natural life 过正常的生活19 a suitable habitat 合适的栖息地
20 resist the disease 抗病21 a somatic cell干细胞
Step 4 长难句理解
1 This happens in plants when gardeners take cuttings from growing plants to make new ones
当园艺师从生长的植物上剪下枝条来培养新植物时就会产生这种现象
happen vi. occur by chance; take place (偶然地）发生；出现
happen to do …/happen to sb./It happened that …
happening n. 事件；偶然发生的事（常用复数）
辨析：happen, occur, take place与come about
四词都有“发生”之意，但有区别。

happen 是一般用语，词义较广，强调事情发生的偶然性;
occur 用法较正式，既可以指自然发生，也可以指有意安排。

take place 一般指有计划，按事先安排的进行的含义。

come about 往往注重事情发生的原因，常与how 连用。

注：以上四组词均为不及物动词，无被动语态。

1) When did the explosion _______
2) Important elections _______ this fall
3) The concert will ___________ next Sunday.
4) How did the quarrel ___________
2. The nucleus of this cell contains all the genes needed to produce a new sheep.
这个细胞得细胞核含有生产一只新的绵羊的必需的基因。

needed to produce a new sheep 为过去分词短语作后置定语，修饰其前面的名词genes, 构成动宾搭配关系。

contain v. have or hold within itself 饱含，里面有
contain “包含，含有”，侧重于包含的内容或成分，“里面装有”；
include “包括”，侧重范围或整体。

Eg:1) Whisky ________ a large percentage of alcohol.
2) The book _________ forty maps, ________ three of Great Britain
3. The nucleus from sheep B and the egg cell from sheep A are joined using electricity.
从绵羊B中取出得细胞核与从绵羊A中取出得卵细胞用电流使之结合。

Using electricity 为现在分词短语作方式状语。

join hands联手，携手join in sth. / doing sth参加活动
join sb. in sth. 和某人一起做事
Step 5 语法探究翻译句子并分析其句法结构
1 The fact is that these are both examples of natural clones.
2 The fact that she seemed to develop normally was very encouraging.
3 Then came the disturbing news that Dolly had become seriously ill.
4 Scientists hold the belief that cloning may lead to many important breakthroughs.
5 There is also a debate over the question whether human cloning experiments should be allowed.
语法小结：1 这是_____________从句
2________词不能省略 3 从句用______语序
4常见名词fact, idea, word，promise, saying，problem, news hope
5常见引导词that, whether, where, how, etc.
（1）The facts that he succeeded in the experiment pleased us.
(2) An idea came to her that she might do that in another way.
（3）Scientists have argued over the problem whether there is life on other planets.
Step 6 当堂检测(高考真题再现)
1 It’s thirty years since we last met
—But I still remember the story, believe it or not, _______ we got lost on a rainy night.
A. which
B. that
C. what
D. when
2 Doris' success lies in the fact _______ she is co-operative and eager to learn from . which B. that C. when D. why
.3 Do you have any idea _______ is actually going on in the classroom
A. that
B. what
C. as
D. which
.4 Danny left word with my secretary _______ he would call again in the afternoon.
A. who
B. that
C. as
D. which
5. Some researchers believe that there is no doubt ________ a cure for AIDS will be found.
A. which
B. that
C. what
D. whether
6 We haven’t settled the question of _______ it is necessary for him to study abroad.
A. if
B. where
C. whether
D. that
7 A warm thought suddenly came to me _______I might use the pocket money to buy some flowers for my mothe r’s birthday.
A. if
B. when
C. that
D. which
8 There is much chance _______ Bill will recover from his injury in time for the race.
A. that
B. which
C. until
D. if
9 Nobody believed his reason for being absent from the class _______ he had to meet his uncle at the airport.
A. why
B. that
C. where
D. because
10 The order _________we should return hasn’t reached us.
A that
B how
C when
D if
Step 7 Homework
Writing : Do you support cloning Why(借助下面的提示完成写作)
Problems or dangers of cloning
1 Animal clones may develop the illnesses of older animals.
2 Evil leaders may want to clone themselves.
3 There are moral objections to cloning human beings.
Advantages of cloning
1 Medical cloning could produce cures for serious illnesses in humans.
2 Cloning plants can produce plants of similar quality for sale.
3 Cloning plants can be useful for research on new plant species
4 Cloning can help save endangered animals。