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(共13张PPT)
To Clone or not to Clone
第三课时
阅读课本53页5-6段，参考导学提纲知识链接部分短语，完成任务：
1.基础感知Task1
2.基础感知Task2表格填空
自主学习
小组讨论：
基础感知Task1.2
步骤要求：1.完成Task1习题和Task2表格
2.在文中找出答案依据
“自学结束，现在开始合作学习，全体起立。”
快速浏览文章paras5-6，找到以下词块及短语，并将其汉意整理到课本上。
1. a great deal of 大量的 2. cause disagreement 引起争议
3. raise moral concerns 提出道德担忧4. be bound to 必定；注定
5. be treated as 被当作……对待 6. own identity 自身身份
7. be viewed as 被看作…… 8. mere copies of ……的纯粹副本
9. be seen as inferior 被认为更低等 10. abuse the technology滥用技术
11. unethical purposes 不道德的目的 12. so far 到目前为止
13. insist that 坚持认为
14. be further explored and advanced 得到进一步探索和发展
Task1
1. Paragraph main idea matching　
Para5 Attitudes towards cloning

Para6 Moral concerns about cloning
2. Read Para.6 carefully and do the following exercise.
What’s the writer’s attitude towards cloning
A．Subjective. B．Objective.
C．Indifferent. D．Interested.
Task2
Moral concerns
Clones are likely to be treated as _______ rather than ___________ with their own identity.
has refreshed the technical possibility of cloning of other species
They may be seen as ________
Some organisations might _____ the technology for unethical purposes.
objects
individuals
inferior
abuse
While some people believe it is crucial for scientific advancement, others raise moral concerns.
仍然是
大量的
并列连词 表对比：然而，却
从属连词
当...时，引导时间状从
虽然，尽管；引导让步状从
while
eg: She prefers tea while he likes coffee.
eg: While I was reading, she was cooking..
eg: While it’s enpensive, the quality is excellent.
现在完成进行时　
教材原句：Natural cloning has been going on for generations.(p52, line2)
1．现在完成进行时的构成：have/has been doing　
2．现在完成进行时的用法　
(1)表示开始于过去某个时间、一直持续到现在而且会继续进行下去的动作。
He has been lying in bed for two weeks. 他已经在床上躺了两周了。
(2)表示到目前为止的一段时间里一直反复进行的动作。
I have been calling him several times this morning，but there is no answer.
我今天上午给他打了好几次电话，但没人接。
◇语法拓讲
现在完成时　
1．构成　
主动形式：have/has done　被动形式：have/has been done
2．现在完成时的用法　
(1)表示过去的动作对现在的影响或结果，常用recently，lately，ever，never，before，yet，so far，up till now，since，for a long time，in/during the past/last few years，these days等作时间状语.
He hasn’t heard any news from his son lately.
他最近没有听到他儿子的任何消息。
So far no life has been found outside the earth.
到目前为止，在地球之外还没有发现生命。
　
(2)在时间或条件状语从句中，通常用现在完成时代替将来完成时，表示将来某一时刻前已完成的动作：　
Tell me what you think of the book when you’ve read it.
你看完这本书后，告诉我你的想法。
(3)“This/It is＋the＋序数词＋time＋that…” 句式中，that后的从句用现在完成时。
This is the second time that I have visited the university.
这是我第二次参观这所大学。
过去完成时
教材原句：For years, there had been attempts to clone animals artificially.(p52, line7)
定义
过去完成时表示过去某一时间或动作之前已经发生或完成的动作，以及此动作对过去的某一点造成的影响。
eg. We had visited the country when we were children.
She had gone to the cinema when I called.
现在完成进行时与现在完成时的区别　
现在完成进行时强调“动作”的持续性，表示“未完成”的含义；现在完成时则强调“时间”的经过或动作产生的“结果”，表示“已完成”的含义。
我已经给花浇过水了。(已完成：你不必浇了)
　
我一直在给花浇水。(未完成：一直在浇)
　
I have been watering the flowers.
I have watered the flowers.
definition & natural cloning
artificial cloning: cloned mammals
artificial cloning: cloned primates
the significance of cloning of primates
moral concerns
conclusion
Match the headings with the paragraphs
Para 1
Para 2
Para 3
Para 4
Para 5
Para 6

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