1、选修八 unit 5 meeting your ancestorsPeriod2 Language pointsClass（授课班级） Class:_Teaching time（授课时间）Teaching aims（教学目的）1. Enable students to grasp the usages of such important new words and expressions2. Get students to master the patterns ：1. Im sorry to interrupt you but how could they live here? P382.
2、We have been excavating layers of ash almost six meters thick, which suggests that they might have kept the fire burning all winter. P383. Yes, indeed, as the botanical analyses have shown us, all the fields around here used to be part of a large shallow lake. P394. Thats why they are called hunters
3、 and gatherers. P39Teaching emphasis（教学重点）Enable students to grasp the usages of such important new words and expressionsTeaching difficulties（教学难点）Get students to understand some differences of some similar words and phrases .Teaching &learning procedures (教学与学习过程)Learning Plan（学案）Teaching Plan （导案
4、）Step1. Preparing lessons &self-study and exploring the problems (预习自学，探究问题) Finish the tasks in the first period in time.Step2.Finishing plan & asking questions（完成学案，提出问题）Report the answers to the class and the teacher.Listen to the tape of the text and underline the new words in the text;Learn the
5、 new words and phrases after the teacher. Ask for help if necessary.Step1. Check the answers of the tasks in Period1;Step2. Play the tape of the text and explain some new words to the Ss.Step3.Researching cooperatively& answering questions(合作探究, 解决问题)Task1. Get the Ss to learn the following language
6、 points:1.Can you think of the alternatives we would use today?(P37)你能想出我们现在的替代物品吗？ 【词语探究】阅读下列句子,注意alternative的词性及意思。(1)Alternative is something that you can choose to do or use instead of something else.(n.替代品)(2)Caught in the act, he had no alternative but to confess.(have no alternative but to do
7、 sth.别无选择,只能做某事)他被当场抓住,除了招供别无出路。【词语运用】根据所给的汉语提示完成句子。(1)你有没有其它的建议?_ (2)他别无选择，只好一个人去那儿。_ 答案：(1)Have you got an alternative suggestion？ (2)He had no alternative but to go there alone.2.I，m sorry to interrupt you but how could they live here？(P38)对不起，打断你的讲话。请问他们怎么能够住在这个地方呢？ 【词语探究】阅读下列句子,注意interrupt的搭配及意
8、思。(1)Trade between the two countries was interrupted by the war.(be interrupted by被中断)(2)Don，t interrupt(me)while I，m busy!(interrupt sb.中断某人的谈话;打扰某人)【词语运用】根据汉语提示完成句子。(1)别打扰他，他还没完成呢。_(2)他的学习由于战争而中断。_答案：.(1)Don，t interrupt him, for he hasnt finished yet. (2)His studies were interrupted by the war.3.S
9、o we think it is reasonable to assume they lived in these caves, regardless of the cold.(P38)因此，我们有理由认为他们不顾严寒，就住在这些洞穴里。【词语探究】regardless of不管,不顾词语辨析 even if/though; regardless of （1）even if/though 表示“尽管”,从属连词,后面要接句子。（2）regardless of 介词短语，后面接名词、代词或动名词。 【词语运用】用even if/though, regardless of 填空。(1)The tr
10、aining class welcomes all students _ age.(2)I like her _she can be annoying.(3)_I have to walk all the way, Ill get there.答案：.(1)regardless of (2)even if/though (3)Even if/though4.That(The fire)would have kept them warm, cooked the food and scared wild animals away as well.(P38)他们用火来取暖、做饭，还可以用火来吓跑野兽
11、。 would:表示猜测,意思“想必 ”、 “肯定会 ”,用于虚拟语气。如：(1)如果汽车当时翻到悬崖下,他们早就丧命了。They would have been killed if the car had gone over the cliff at that moment.(2)你要是能走开，我感激不尽！I would be glad if you would go away!【词语辨析】 would与used to 都表示过去习惯性的动作。（1）would:不涉及与现在情况的对比,常带有浓厚的感情色彩。（2）used to:表示过去习惯性的动作或状态，但这种习惯现在已不存在了。 【词语运
12、用】用would, used to填空。(1)When he was there, he _（go）to that coffee shop at the corner after work every day.(2)He_（go） to that river to swim after school.答案： (1)would go (2)used to go5.It seems that they used the sharpened stone tools to cut up animals and remove their skin.(P38)看样子他们可能是用磨尖的石器来切割野兽并剥皮。
13、 【词语探究】阅读下面的句子,注意cut up的用法。(1)She cut up the meat for her little dog.(切碎)(2)He seemed very cut up by his troubles.(使丧气)(3)We have cut up the enemy ，s forces.(歼灭)【词语归纳】cut in插嘴，打断cut off切断，阻断，使分离，使隔离cut through穿过cut down砍伐,缩短cut out删掉，剪裁【词语运用】选用上述短语填空。(1)More and more trees have been_ and this has ca
14、used serious pollution in this area.(2)It is considered impolite to _when others are speaking.(3)The mountains _them _ from the rest of the world.(4)Let，s _the fish for some soup.(5)He managed to _the crowd to catch up with his friends. 答案：(1)cut down (2)cut in(3)cut.off (4)cut up (5)cut throughStep
15、3. Encourage the Ss to explore the usages of important language points in the text in groups.Step4.Summing &chewing, summarizing knowledge（总结反刍 ，知识梳理） Discuss the usages of the following similar words and finish the exercises in groups: 【近义词辨析】 1.alternative和alternate【课本原句】Can you think of the alter
16、native we would use today?(page37) alternative n& adj. “两者择一 （供替代的选择）；替代物; 两者择一的；供选择的”，与alternate是近义词。【观察例句】If you dont like the school lunch, you have the alternative of bringing your own.如果你不喜欢学校准备的午餐，你可以选择自己带饭。We have no alternative but to go on.除了继续下去,我们别无选择。There was no other alternative but to
17、 fight till the victory. 除了战斗到胜利,别无选择。 According to the weather forecast, there will be a week of alternate rain and sunshine. 根据天气预报,下礼拜时雨时晴。She works on alternate days.她隔日工作。【归纳总结】这几两个词都可作名词和形容词，其用法区别是：alternate表示“交替的，交错的， 隔一个的，替补的人或物”的意思；而alternative则强调“两者或两者以上中任选其一，供选择的”的意思。alternatively adv. 或者
18、，二者择一地。常用结构：have no alternative but to do sth.只能做某事；除.外别无选择。【即学即用】请选用分别完成下列各句：1.They have several _ on their team.2.The way was blocked, so we went by an _ road. 【考试链接】单项填空In this school, the students have three courses, and seven courses. （陕西师大附中模拟）A. required; alternative B. requiring; alternative
19、 C. required; alternate D. requiring; alternate2. assume和suppose3if only 和only if 【课本原句】If only she had looked ahead and planned better this year!她今年要是早有预见，计划得更好些就好了！（page43）【观察例句】If only she would pass the English examination！但愿她能通过英语考试！Only if you study hard can you go to college.你只有努力学习才能上大学。If o
20、nly I were better looking. 要是我长得漂亮些就好了。(对现在的虚拟) If only she had lived a little longer! 要是她能活得再长一些，那该多好啊！（对过去的虚拟）If only she would go with me! 她要是愿意和我一道去就好了! (对将来的虚拟) If only they were here now, we would be able to celebrate their wedding anniversary.如果他们现在在这里，我们就能庆祝他们的结婚纪念日了。【归纳总结】if only 表示“但愿，要是就好
21、了”，引导感叹句或状语从句，动词用虚拟 语气，表示愿望或未实现的条件。if only常常用来表达强烈的愿望或遗憾，因此，主要用在虚拟语气中，用以表达强烈的愿望或非真实条件。意为“但愿；要是该多好啊”。 在if only这个短语中，中心词是从属连接词if, 而副词only只是加强if的语气的，因此，if only仅仅是if的一种强化形式，不仅能表达说话人的愿望，而且能表达条件。因此，它同if一样，也能引导条件状语从句。only if 表示“只有才”，引导条件状语从句，为一般条件句，不用虚拟语气。若引导从句置于句首，则主句应用半倒装。 【即学即用】请选用分别完成下列各句：1.他要是愿意和我一道去就
22、好了。_ he would go with me.2.我只有找到了工作才有足够的钱上学。_ I get a job will I have enough money to go to school（上述几组近义词组的辨析、检测题及答案参见由王军龙主编，陕西师大出版社出版的新课程高中英语词汇导学练P230231）Step4. Get the Ss to discuss the usages of the similarwords in order to makethem understand the words .Step5.Testing in class & improving skills
23、（随堂检测，落实考点）请根据下列每小题后的提示选择出正确答案：1. -May I clean the room tomorrow?-No, you have no_. You must do it now, for the guests will come at any moment. A. chance B. alternative C. way D. help 【解析】 alternative可能的选择， 选择对象 ，故选 B。2. He has made a _offer-he will make it clear as soon as possible. A. tentative B.
24、 clear C. sure D. certain 【解析】 tentative不确定性， 暂定的， 试探性的，故选 A。 3. I dont want to _you. Go on with your story.A. stop B. finish C. end D. interrupt 【解析】interrupt vt 暂时中断或中止 ，故选D。4. It is generally _that stress is caused by too much work. A. assumed假定， 设想B. arranged C. announced D. declared 【解析】assumed
25、假定， 设想，故选 A。5. _the consequences, he did whatever he liked to and nobody could stop him.A. In case of B. Regardless of C. As a result of D. Because of 【解析】regardless of 不管， 不顾， regardless of consequences 不顾后果，故选 B。6. I think we have_time to get to the station.A. many B. rich C. large D. ample 【解析】am
26、ple adj 足够的， 充分的（同enough），故选D。7. Although I succeed now, I should always_the style of hard struggle. A. preserve B. order C. praise D. follow 【解析】preserve保护， 保存， 保持，故选 A。8. This is a way of living_to him. A. especial B. particular C. specific D. special 【解析】specific详细而精确的， 确切的，特定的， 具体的，故选C。9. It was
27、 only later that we realized the true _of his remark. A. significance B. way C. approach D. method 【解析】significance 意义， 含义； way 方式； approach 途径 ；method 方法 ，故选A。 10. Dont worry. Well get the money back _. A. occasionally B. exactly C. conveniently D. somehow 【解析】somehow adv 以方式，不知怎么地，故选D。（答案参见由王军龙主编，
28、陕西师大出版社出版的新课程高中英语词汇导学练P233）Step5. Ask the Ss to finish the homework.Step6. Assessment & Homework（课堂评价，布置学案）1. Finish the exercises at Page 40;2.Read the new words and the text after class.3.Find and underline all the sentences including the Present Perfect Continuous Tense in the text.Reflection after teaching（教后反思）