課程內(nèi)容
高中英語《克隆 Unit 2　Cloning（Part 1）》（選修8）
Warming up
How much do you know about cloning
What's cloning?
Cloning is a way of making an exact copy of another animal and plant.
It happens in animals as well as in plants.But cloning plants is straightforward while cloning animals is very complicated.
What are Cones divided into?
Cones are divided into two:
natural clones and man-made clones
Natural clone is one that occurs in a natural form of cloning without human beings' help.
Man-made clone is one that is produced through human beings's intervention(介入）.
Which of the following clones are natural,and which are man-made?
Write the letter"T" if the statement is true.
Write "F"if it is false.
1.Cloning means making a copy of an animal or a plant.(F)
2.Gardeners can make a lot of money by cloning plants.(T)
3.Cloning animals is as complicated as cloning plants.(F)
4.Dolly the sheep was the first successful clone of a mammal.(T)
5.Natural clones happen in animals as well as in plants.(T)
Language points
1.differ vi.不同；相異；不同意
那就是我們意見不同之處。
That's where we differ.
搭配：differ in...     在...方面不同
differ from...    與...不同
differ from/with sb. about/on sth.   在某方面與某人不同
我們的意見在那個(gè)方面有很大的出入。
用介詞from.with,in,on.about,upon填空
(1)The two girls differ (in)language.
(2)The customs here differ (from)those of the south.
(3)I differ (from/with)him (on about)the plan.
2.undertake  vt.著手做；從事；承擔(dān)；保證
她為新變化承擔(dān)全部責(zé)任。
She undertook full responsibility for the new changes.
undertake to do sth   保證做某事
他答應(yīng)星期五之前完成這項(xiàng)工作。
He undertook to finish the job by Friday.
(1)They (undertook an important project)(承擔(dān)了一個(gè)重要項(xiàng)目）last year.
2)We will (undertake a journey)(去旅行）next week.
3)She (undertook to pay back)(答應(yīng)償還）the money within three months.
1.What do you think is the right person to (B)the task?
A undergo   B undertake     C understand    D underline
【解析】undertake the task 表示“承擔(dān)任務(wù)”為固定搭配，A、C、D均不與the task構(gòu)成有意義的詞組。
3.cast vt.扔；投；擲  (cast,cast)
cast sb down   使沮喪
be cast down    感到沮喪
cast a net   撒網(wǎng)
cast a vote   投票
cast sb. into prison   把某人投進(jìn)監(jiān)獄
cast...on/at   把（光、視線等）投向....
他向那婦人看了眼
He cast his eyes at the woman.
完成句子
(1)The thief (cast down the wallet)(丟下了錢包）and ran away.
(2)Don't be (cast down)(垂頭喪氣），try agagin.
(3)Hearing the news,he (was cast down)(很沮喪）.
4.pay off  得到好結(jié)果，取得成功；償清
你的計(jì)劃成功了嗎？
Did your plan pay off?
他們?nèi)瓴胚€清欠債。
It took them three years to pay off the debt.
辨析pay for,pay back與pay off
(1)pay for 表示“付...的錢”
她買那個(gè)戒指花了兩百美元。
She paid 200dollars for that ring.
(2)pay back 償還；報(bào)復(fù)
你能借給我10英鎊嗎，我星期五就還你。
Can you lend me $10?I'll pay you back on Friday.
他不來，以此來報(bào)復(fù)我。
He paid me back by not coming.
運(yùn)用用pay構(gòu)成的短語完成句子
(1)pay for  為....付款/付出代價(jià)
(2)pay back   償還，回報(bào)
(3)I'll pay you back (還你錢）next week.
(4)I have paid for (已付了錢）the car.
(5)You must pay for(為...付出 代價(jià)）your rude words.
(6)She paid 100 yuan for Tom's bike.(花100元買了湯姆的自行車）
（7）His efforts paid off(他的努力沒有白費(fèi)）when the girl accepted his proposal.
(8)-Li Fei won the first prize in the national English competition.
-Oh,really?I'm glad that her efforts at last(C).
A worked out     B got back    C paid off   D turned out
【解析】下句意為“我很高興她的努力最后獲得回報(bào)”，pay off （指冒風(fēng)險(xiǎn)的政策、做法等）帶來好結(jié)果，成功，行得通。又如：The gamble paid off.賭贏了。
4.object  vi.反對；不贊成（常接介詞to)
We object to being treated like this.
我們抗議這種待遇。
I objected that he was too young for the position.
我提出反對意見他太年輕不適合這個(gè)職位。
objective  adj.客觀的，不帶偏見的
用object的適當(dāng)形式填空
(1)He didn't mean to (object)to my proposal.
(2)His idea is reasonable and (objective).
objection  n.反對；不贊成
have/take/make an objection to(doing)sth.
對...表示反對
raise an objection to sth.對...提出異議
我反對該計(jì)劃的主要理由是它費(fèi)用太高。
My main objection to the plan is that it costs too much.
We (B)to punishing a whole group for one person's fault.
A complain      B object     C oppose   D resist
【解析】考查動(dòng)詞辨析。句意為：我們但對因?yàn)橐粋€(gè)人的過失而去懲罰所有的人。complain 抱怨，悲嘆，控訴；object反對,object to doing 反對做....；be opposed to=object to 反對；resist 抵抗，反抗，忍得住
5.obtain   vt.獲得；贏得
搭配  obtain sth. from....    從....獲得....
obtain sth. through...    通過（某種方式或手段）獲得
根據(jù)漢語意思完成英語句子
（1）上網(wǎng)是我的愛好之一，我能從網(wǎng)上獲取很多知識。
Surfing on the Internet is one of my hobbies and I can (obtain much knowledge from)it.
(2)追求幸福是每個(gè)人的共性，但獲得幸福的手段是各不相同的。
All people are driven to pursue happiness in life,but the ways through which we obtain happiness are different.
6.accumulate  v.積累，聚集
He accumulated large fortune by hard work.
他因努力工作而積蓄了一大筆財(cái)富。
accumulated energy(strength)
積聚的能力（力量）
accumulated evidence (debts)
越來越多的證據(jù)（債務(wù)）
完成句子
(1)He quickly (accumulated large fortune.)
積蓄了一大筆財(cái)富
(2)Clouds began to (accumulate in the sky).
在天空中聚集。
Homework
1.Review the language pints.
2.Go through the text;Cloning