高二英語選修8unit 2CIoning導(dǎo)學(xué)案Period 3 Language points一. 學(xué)習目標：l. To get the Ss to learn to use the important new words and phrases freely.2. To get the Ss to experience the procedure of the debate contest.二. .教學(xué)重點To use some useful words and expressions.三 Teaching difHcult point:1. The understanding and analyze of some difficult and long sentences in the text.2. Ask the Ss to talk about cloning.三預(yù)習自測Discuss the advantages and disadvantages of cloning.Problems or dangers of cloningAdvantages of cloning四.作探究：Language points:1. This happens in plants when gardeners take . when twins identical in sex and .1) "when gardeners take cuttings from growing plants to make new ones, .whentwins identical in是兩個時間狀語從句。when引導(dǎo)的時間狀語從句中從句的動作可以與主句的動作同時發(fā)生，也可以先于主句的動作。Don't be afraid of asking for helpit is needed.A. unlessB. sinceC. althoughD. when2) happen vi. occur by chance; take place (偶然地)發(fā)生；出現(xiàn)happen to do . happen to sb.It happened that.happening n.事件；偶然發(fā)生的事(常用復(fù)數(shù))辨析：happen, occur, take place與come about四詞都有“發(fā)生"之意，但有區(qū)別。happen是一般用語，詞義較廣，強調(diào)事情發(fā)生的偶然性；occur用法較正式，既可以指自然發(fā)生，也可以指有意安排。take place 一般指有計劃，按事先安排的進行的含義。come about往往注重事情發(fā)生的原因，常與how連用。以上四組詞均為不及物動詞，無被動語態(tài)。Use the above words to fill in the blanks1) When did the explosion?2) Important electionsthis fall.3) The concert willnext Sunday.4) How did the quarrel?2. undertake vt. (undertook; undertaken)著手做，從事，進行；擔任，承擔，答應(yīng),The procedure is difficult to undertake, of course.當然，這個過程很難實施。The scientist undertakes the experiment.科學(xué)家從事這項實驗。I can undertake the responsibility for the changes 我愿意承擔這些變革的責任。完成下列句子。1）The lawyera new case.那個律師接了一個新的案子。2）He willnext month （去旅行）.3）He.（承擔一項新任務(wù)）3. pay off （事業(yè)、計劃等）成功；付清薪水并解雇；償還（債務(wù)等）。At last the determination and patience of scientists paid off.最終科學(xué)家們的決心和耐心得到了回報.He paid off the crew of the ship.他付清全體船員的工資并將他們解雇。In the end he paid off all his debts.最終他還清了 所有的債務(wù)。pay back報答；報復(fù)用介詞back, off, to,填空：1）Your effort is sure to pay.Thank you for your encouragement.2）The supermarketwhich he had ever paid a visit, was burnt to the ground.3）How can I pay youfor all your kindness?4）Well, after these years, we've at last paidall our debts.4. The fact that she seemed to develop normally was very encouraging.多莉看來是在正常地成長著，這很令人鼓舞?！皌hat she seemed to develop normally"是同位語從句。同位語從句可由 when/ where/how/ why/that/ whether 等詞引導(dǎo)。先行詞多半是 idea/ fact/ news/hope/ belief/thought/ doubt/question等。同位語從句一般放在抽象名詞之后，用以說明抽象名詞的具體內(nèi)容，有時為了保持句子的平衡，同位語從句還可以放在動詞的后面。如：Soon word came that we won.5. Then came the disturbing news that Dolly had become seriously ill.然后傳來了多莉病重的壞消息。本句中，副詞then放于句首，主語是名詞"news", “that Dolly had become seriouslyill”是同位語從句，句子用了倒裝語序。In the dark forests, some large enough to hold several English towns.A. stand many lakes B. lie many lakes C. many lakes lie D. many lakes stand6. cast down使沮喪；毀掉（常用于被動語態(tài)或j乍表語）Cloning Scientists were cast down to find that Dolly's illness were more appropriateto a much older animal.克隆科學(xué)家沮喪地發(fā)現(xiàn)多莉的病更容易在年老的羊身上。不要這么沮喪，打起精神來！Don't be so cast down. Just keep up your spirits.cast away丟棄 castoff 放棄；丟棄 cast out 趕走將下列句子譯成英語。1）聽到這個消息他很沮喪。2）發(fā)現(xiàn)事情的真相使他很沮喪。7.object vi.We object to being treated like this.我們抗議這種待遇。I object to the plan.我反對這項計劃。object vt. I object that he is too young to take that position.我提出反對意見：他太年輕不適合那個職位。object to (doing ) sth. object + that 從句objection 是名詞,常與 have, take, feel 等連用 have / take / feel objection to(doing )sth.即時練習：句型轉(zhuǎn)換(1) Have you any objection to my opening the window?=Would youmy opening the window?(2) take objection to smoking.= Ismoking.(3) “But he is too young,” she argued = Shethat he was too young.13. attain vt.獲得(尤其指經(jīng)過努力)達到(年齡，水平,狀況等)He attianed success through hard work.He attained the age of 25 before marriaging.比較：obtain vt.(經(jīng)買，借，拿等)獲得，得到某物He always manages to obtain what he wants.Where can I obtain a copy of her latest books?8. forbid vt. (forbade; forbidden)禁止，不許，妨礙,阻止Governments became nervous and many forbade research into human clothing.政府開始感到不安，有許多政府禁止對克隆的研究。Smoking should be forbidden in public places.公共場所應(yīng)禁止吸煙。Her father forbid her to go out alone.她父親不許她單獨外出。I forbid you entering my study.我不許你進入我的書房。forbid sb. to do / forbid sb. from doing sth.禁止某人做某事forbid sth.禁止某事與forbid結(jié)構(gòu)相同的詞有：permit sb to do / permit doing sth 允許某人做某事/允許做某事；allow sb. to do /allow doing sth 允許某人做某事/允許做某事；advise sb. to do / advise doing sth.建議某人做某事/建議做某事1) The school(禁止學(xué)生吸煙).2) He is forbidden to(進入這個房間).3) There are laws in some countries which forbid advertisements at inappropriatetimes and places.A. being shown B. shown C. show D. to have shown4) At the conference he was forbiddenthe subject again.A. mentioning B. to mention C. mention D. mentioned9.1s it in favour of cloning or against it?in favour of是固定短語，意思為：贊同，支持；等同于approve ofo如：As to education, most specialists are in favour of further reform. 關(guān)于教育問題，多數(shù)專家支持做進一步改革。do a favour for sb. / do sb. a favour 幫某人一個忙與in favour of結(jié)構(gòu)相同的短語有：in praise of 表揚 in honor of /in memory of 紀念 in case of 如果，假使 incharge of 掌管 in possession of 擁有in consequence of 由于，作為的結(jié)果用上述短語填空。1) All his family are his decision to work in western area aftergraduation.2) While reading,coming across new words, you'd better guess theirmeanings rather than refer to the dictionary.3) Mary told me that she wassome lovely jewels.4) They had to move to another citythe typhoon.五.當堂檢測及總結(jié)提升：1. In many aspects natural clones, such as identical twins, do not dgreatly fromman-made ones.2. He was cdown when the procedure he had used to produce a mammal cloneended in failure.3. Dust will ain a deserted house.4. Her memory is so excellent that she could remember the enames5. She was not apleased at the corrections he made to her work.6. Grey decided to move to the countryside and his wife made no oto it.7. According to the constitution, it is compulsory for a citizen to umilitaryservice.8. The media has a mresponsibility to report news truthfully.Homework:1.Complete the Exxl,2,3 on page 13 in the SB.2 .閱讀同位語從句的定義及用法并做同位語從句的預(yù)習自測。