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新人教版选修八Unit2 Language Points课件


Unit 2 Cloning Language points

A:重点单词

1. differ vi.
观察示例:

In pairs, look at these pictures and discuss which ones are natural clones and which ones are

man-made. Explain how they differ.
两人一组, 观察图片并讨论哪些是自然无性 繁殖, 哪些是人工的。解释它们的区别。

1) Chinese differs greatly from English in pronunciation.(汉语与英语在发音上有很大的 不同。) 2) Modern airplanes differ from early ones.(现代 飞机跟早期的在很多方面有所不同。) 3) I differ with him how to solve the problem.( 对于如何解决问题, 我跟他的意见不一致。)

They differ with each other on moral standards. (关于道德标准, 他们的见解不同 。)

归纳拓展: differ ( vi.), 主要有两个义项:“不同, 相
异;不同意, 意见相左”。常见的搭配有:

1). sb. differ from/with sb. on/upon/about sth.; (某人与某人在....方面意见不同) 2). sth. and sth. differ in… ;(某物与某物在....方
面不同)

3). sth. differ from sth .(某物与某物不同)
4. difference (n.)不同 different (adj.) 不同的

即时练习:
用介词 from, with, on, about, upon 或 in 填空。

(1) We differ _________ him _________ from/with on/about/ _____ that question. upon (2) The two nations differ __ culture in

and religion.
(3) The climate here differ _________ from/with

that of the South.

汉译英: 这个小男孩在性格方面不同于他的母亲。

The boy differs from his mother in character.

2. undertake vt. (undertook; undertaken)
观察示例:

The procedure is difficult to undertake, of course.
当然, 这个过程很难实施。

The scientist undertakes the experiment.
科学家从事这项实验。

I can undertake the responsibility for

the changes.
我愿意承担这些变革的责任。

The lawyer undertook a new case.
那个律师接了一个新的案子。

归纳拓展: undertake是及物动词, 主要有两个义项:
着手做, 从事, 进行; 担任, 承担, 答应, 同意。

即时练习:
完成下列句子。

(1) He will _________ __ _______ next undertake a journey
month (去旅行). (2) He __________ __ ____ ____ (承担一项 undertook a new task
新任务).

3. disturbing adj.
观察示例:

Then came disturbing news that Dolly became seriously ill.
然后传来了多莉得了重病的令人烦恼的消息。

The news from the front is very disturbing.
来自前线的消息令人极为不安。

归纳拓展:
disturb vt. 扰乱, 使不安, 弄乱;

disturbed adj. 被扰乱的, 动乱的, 不安的;
disturbing adj. 令人不安的。 特别提示:
现在分词表示: 令人怎么样, 过去分词表示: 被使得怎么样, 感到怎么样。

如: an interesting story 令人感兴趣的故事

an interested look 感到兴趣的表情 surprised people (感到)惊奇的人们
即时练习:
用disturb, disturbing, disturbed填空。

(1) I’m very _________ about Alice. disturbed (2) Don’t _______ the papers on my desk. disturb

(3) This country is in a _________ state. disturbing

(4) What _________ news it is! disturbing
(5) A light wind _________ the surface of disturbed the water.

4. object (v. ) & objection ( n.)
观察示例:

On the other hand , Dolly’s appearance raised a storm of objections and had a great impact on the media and public imagination.
另一方面, 多莉的出现引来了巨大的反对 激发了传媒的热炒和公众的想像力。

I feel a strong objection to getting up early. 我极不愿意早起。 Have you any objection to my opening the window? 你反对我打开窗子吗?

object vi.
We object to being treated like this.

我们抗议这种待遇。
I object to the plan.

我反对这项计划。
object vt.

I object that he is too young to take that
position. 我提出反对意见: 他太年轻

不适合那个职位。

归纳拓展:
object to (doing ) sth.
object + that 从句

objection是名词, 常与have, take, feel 等

连用构成词组:
have / take / feel objection to (doing )sth.

即时练习: 句型转换 (1) Have you any objection to my opening the window? = Would you ______ __ my opening the object to window? (2) take objection to smoking. = I ______ __ smoking. object to (3) “But he is too young,” she argued. = She ________ that he was too young. objected

5. forbid vt. (forbade; forbidden)
观察示例

Governments became nervous and many forbade research into human clothing.
政府开始感到不安, 有许多 政府禁止对克隆的研究。

Smoking should be forbidden in public places.
公共场所应禁止吸烟。

Her father forbid her to go out alone.
她父亲不许她单独外出。

I forbid you entering my study.
我不许你进入我的书房。

归纳拓展: forbid 是不及物动词, 常见的搭配有: (doing) sth. sb. to do sth. sb. (doing )sth. that…

forbid

即时练习:
完成下列句子

(1) The school forbids ___ students __ ______ the _______ to ______ (禁止学生吸烟). smoke (2) He is forbidden to _____ ___ _____ enter the room (进入这个房间).

6. accumulate vt. Some countries such as China and the UK continued to accumulate evidence of the abundant medical aid that cloning could provide.
有些国家比如中国和英国继续收集克隆 能提供丰富的医疗帮助的证据。

He accumulated fortune by hard work.
他因努力工作而积蓄了一笔财富。

The purpose of education is not just accumulating information.
教育的目的不仅仅是积累知识。

vi. Dust accumulated during my absence.
我不在期间灰尘积聚了起来。

归纳拓展:

accumulate可作及物动词和不及物动
词,表示: 收集, 聚集, 堆积。

另外 accumulation n. 积聚

如: the accumulation of knowledge
知识的积聚

即时练习:
完成下列句子

(1) He quickly accumulated _____ fortune ___________ large ______ (积蓄了一大笔财富). (2) Clouds began to __________ __ the accumulate in ___ ___ (在天空中聚集). sky

B:重点词组 1. cast down 使沮丧
观察示例:
(常用于被动语态或作表语)

Cloning Scientists were cast down to find that Dolly’s illness were more appropriate to a much older animal.
克隆科学家沮丧地发现多莉的病更容易在年 老的羊身上。

Don’t be so cast down. Just keep up
your spirits.
不要这么沮丧, 打起精神来!

归纳拓展: cast down 有两个义项: 毁掉;使沮丧

即时练习:
将下列句子译成英语

(1) 听到这个消息他很沮丧。
___________________________________ He was cast down to hear the news.

(2) 发现事情的真相使他很沮丧。
__________________________________ Finding out the truth made him
___________ cast down.

2. pay off (事业、计划等) 成功
观察示例
1. At last the determination and patience of

scientists paid off …..
最终科学家们的决心和耐心得到了回报….

2. He paid off the crew of the ship.
他付清全体船员的工资并将他们解雇。

In the end he paid off all his debts.
最终他还清了所有的债务。

归纳拓展:

pay off 有三个义项:成功;付清薪
水并解雇;偿还(债务等)。

pay back 报答;报复

? 用介词back, off, to,填空:

? (1) -----your effort is sure to pay_____. ? ---- Thank you for your encouragement to ? (2) The supermarket ________ which he had ever paid a visit, was burnt to the ground. back ? (3) How can I pay you ________ for all your kindness? ? (4) Well, after these years, we’ve at last

off

off paid ________ all our debts.

即时练习:
将下列句子译成英语

(1) 他在父亲的帮助下还清了全部债务。
________________________________ He paid off all his debts with the help ___________________ of his father. (2) 你的努力会有好结果的。

__________________________ Your effort is sure to pay off.

Bye Bye


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