1、选修八 Unit3 Inventors and inventionsPeriod2 Language pointsTeaching aims（教学目的）Let students learn the usage of the words and expressions in Warming up and Reading.Teaching emphasis（教学重点）Enable students to grasp the usages of the words and expressions and some long complex sentences.Teaching difficultie
2、s（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)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）Repo
3、rt 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 new words and phrases after the teacher . Ask for help if necessary.Step3.Researching cooperatively& answering questions(合作探究, 解决问题) 1.Here was a chance for me to distinguish
4、myself by inventing something merciful that would catch snakes but not harm them.(P20)这回我有机会来表现自己,我要发明某种东西,既可以把蛇捉住,而又不会伤害它们。【词语拓展】distinguish right from wrong明辨是非distinguish good from evil分辨善恶distinguish sb. in a crowd在人群中认出某人distinguish oneself by scholarship学问超群distinguish oneself 使自己与众不同;使自己出名dis
5、tinguish.from.=tell.from.辨别,识别;把和区别开 be distinguished for 以而著名 【词语运用】将下列句子译成英语。(1)不能辨别颜色的人称为色盲。_ (2)这人凭着智慧使自己扬名。_ (3)明辨是非当然要紧。_ 【答案】(1)People who cannot distinguish between colours are said to be colourblind. (2)The man distinguished himself by his wisdom. (3)It is certainly important to distinguish
6、 between right and wrong.2.I set about researching the habits of snakes so I could trap them in the easiest way.(P20)于是我就着手研究蛇的习性,以便能用最简易方法来捕蛇。 【词语拓展】set about(doing)sth.开始做某事set out to do sth.开始做某事set out 出发,启程set off 出发,动身,使爆炸set aside 留出,对不予以考虑set down 记下,写下set up 设置,造成,产生【词语运用】选用上述短语完成句子。(1)We _
7、 discussing when and how we should finish the task.(2)The sooner we _it, the sooner we，ll finish it.(3)As a traditional way to celebrate the new year,_firecrackers is welcomed by most Chinese people.(4)He is used to_ his important thoughts in his diary.【答案】 (1)set about (2)set about (3)setting off (
8、4)setting down3.They abruptly disappeared into a convenient hole in the wall.(P20)它们突然一下子就消失在墙壁附近的洞里去了。【词语拓展】for(one，s)convenience 为了(某人的)方便at one，s convenience在某人方便时it is convenient for sb.方便某人it is convenient to do sth.方便做某事【词语运用】阅读下列句子，学习convenient, convenience的用法。(1)Will it be convenient for you
9、 to start work tomorrow？(adj.方便的)(2)I keep my reference books near my desk for convenience.(n.方便)(3)For your convenience, the bank is open until 7 p.m.(n.方便)Step4.Summing &chewing, summarizing knowledge（总结反刍 ，知识梳理）【近义词辨析】 1. bear, stand 和tolerate 2. stable, firm 和steady 3. ring back, ring off , ring
10、 up 和 ring out 4. in case 和in case of 5. get through 和 go through （上述词语的辨析，辨析题与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P221222）【长句用法探究】1.But once picked up, they tried to bite me. 但是它们一被捡起来，就试图咬我。【用法归纳】(1)once作为连接词引导时间状语从句时，后面可接现在分词或过去分词。Once opened, the museum will be very popular with the citizens.博物馆一旦开
11、放，肯定会受到市民的欢迎。(表被动)Once talking with him, youll find him an easygoing man. 一旦与他交谈，你就会发现他是一个随和的人。(表主动)(2)once 引导的从句中，要用一般时代替将来时。Once you have grasped English, youll be easy to get a wellpaid job.一旦你掌握了英语，你就会很容易找到一份报酬很高的工作。(现在完成时代替将来完成时)Once he arrives, we can start.他一到我们就可以开始。(一般现在时代替一般将来时)You will be
12、 successful in the interview _ you have confidence. (福建)AbeforeBonce Cuntil Dthough（答案：B。解析：考查状语从句。once “一旦”引导时间状语从句。before“在以前”；until “直到”；though“虽然”。）2Only after you have had that recognition can you say that you are truly an inventor.只有在你获得了那种认证后，你才能说是一个真正的发明家。Only+从句引起的倒装句。3The criteria are so s
13、trict that it is difficult to get new ideas accepted unless they are truly novel.(评定)专利标准是很严格的，除非新的想法真是新颖的，否则很难被接受。此句含有sothat 和 unless引导的两个状语从句。4Remember to include one change to your invention in case it doesnt work the first time.记住对你的发明要有变化的余地，以防它第一次不起作用。【用法归纳】in case(以防)万一in case 后可接从句，也可置于句末。in
14、 case of 要是；在时候(后接名词或代词)in this case 如果这样的话in that case 如果那样的话in any case 无论如何in no case 决不(位于句首，句子应使用倒装语序)Take your umbrella in case it rains.拿着你的雨伞以防下雨。In case I forget, please remind me of my promise.如果我忘记了我的诺言，请提醒我。 In case of fire, open this safety door.一旦发生火灾，打开这扇安全门。In no case may you leave t
15、he baby alone at home.你决不能把孩子一个人留在家里。【小试身手】1.Leave your key with a neighbor _ you lock yourself out one day. 北京)Aever since Beven if Csoon after Din case（答案：D。解析：A项意为“自从以来”，B项意为“即使”，C项意为“不久之后”，D项意为“以防；以免”。句意为“留一把钥匙给邻居，以免有一天你把自己锁在门外”。）2.It is reported that there will be a heavy rain tomorrow, _ the h
16、ike would be put off. Ain any case Bin which case Cin no case Din case（答案：B。解析：该题考查case的相关短语及定语从句，根据前面说“据说明天有大雨”，可知hike在这种情况下要推迟，which引导定语从句，指代整个主句。）3.The first bus has just left and the next bus will come in twenty minutes._， we will have to wait.AIn this case BIn this way CBy this means DIn the en
17、d（答案：A。）Step5.Testing in class & improving skills（随堂检测，落实考点）1. When I grew up in a small village of my hometown at the foot of a mountain , the visit to the village_ scenes of my children.A. called up B. called for C. called on D. called in 2. Our English teacher sometimes writes _on QQ, even when t
18、heres not much to say.A. now and then B. by and by C. step by step D. more or less 3. The Senior students should be taught to _right _wrong in class.A. distinguish; by B. distinguish; for C. distinguish; from D. distinguish; to 4. She _in touch with his friend when she arrived at Xian.A. set about g
19、etting B. set about to get C. set out getting D. set out get 5. The train came to an _stop, making many passengers fall off their seats. A. abrupt B. abruptly C. suddenly D. surprised 6. Their house is very _for schools and stores. A. convenient B. abrupt C. central D. apparent 7. The teacher asked
20、us not to be _in class. A. passive B. active C. clever D. lonely 8. Can you give me a _reason why you want to leave my company? A. passive B. abrupt C. disturbing D. valid 9. A computer has a wide range of _for businesses. A. indication B. expectation C. applications D. regulation 10. John may phone
21、 tonight. I dont want to go out _he phones. A. as long as B. in order that C. in case D. so that11. She _her bag and brought out an old photograph. A. went into B. looked into C. got into D. dived into 12. Most of the old different from the young are interested in _events. A. current B. latest C. re
22、cent D. fast 13. Water can absorb and give off a lot of heat without big changes in temperature, this creating a _environment. A. peaceful B. sensitive C. common D. stable 14. The passage without new words is _not easy to understand. A. truly B. in truth C. from fact D. fact 15.When we plan our vaca
23、tion, my mother often offers _ suggestions. A. careful B. practical C. effective D. acceptable ACDCB CDACD ADCBAStep6. Assessment & Homework（课堂评价，布置学案）1. Finish the exercises at Page 23;2.Read the new words and the text after class.3.Find and underline all the sentences including the Past Participle in the text.
