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1、高二英语选修8 Unit2第23课时Language pointsTeaching goals1 .Enable the students to learn the key words, expressions and sentences.2 .Teaching important and difficult points:Master the use of the key words ,phrases and sentensespart 1 language study1. differ -different -difference mercial -commerce3. disturbin
2、g -disturbed -disturb-disturbance 4.medium -media (pl.)5 forbid -allow /permit (opposite word) 6accumulate -accumulation7. assumption -assume (v.)S.regulation -regular(adj.) -regularly9.resist -resistance(n.) -resistant(adj.) lO.decoration -decoratePart 2Languge points1. differ vi,不一致，不同，相异，不同意，意见相左
3、常见的搭配有：1) A and B differ in .2) A differs from B3) sb differ from/ with4) sb on/ about / over /upon sth拓展：different adj.difference nbe different frommake no difference to sb.make a difference即时练习：用介词from, with, on, about, upon或in填空。(I ) We differ him that question.(2) The two nations difler culture
4、and religion.(3) The climate here diflbs that of the South2. undertake vt undertake sth 谕电K 事undeHake a task/ project 承担-卞壬务颂目undertake to do sth 许诺ft媒郭同意undertake that 保iiE.即时练习：(l).He will next month (去旅行).(2) .我愿意承接这项变革的责任I canfor the changes.(3) .他许诺当我们的向导.Heour guide .3 .pay off 1)(事业、计划)成功：2)付
5、清薪水并解雇；3)偿还(债务等)1)他付清全体船员的工资并将他们解雇。Hethe crew of the ship.2)最终他还清了所有的债务。.4 . cast down： feeling unhappy and depressed 使沮丧，低沉， 使下降，推翻be cast down = feel discouragedHe was much cast down by the failure of the experiment.即时练习：将下列句子译成英语(1)听到这个消息他很沮丧。(2)发现事情的真相使他很沮丧。拓展： 词汇 cast about/around forcast awayc
6、ast aside cast off cast outhave/make an objection to (doing) sth.raise an objection object vi./vt. object to sth./doing sth., object to sb doing sth object that.We object to being treated like this. I object that he is too young to take that position.即时练习：将下列句子译成英语学生反对像孩子似地被对待。我们反对因为一个人的错误而惩罚整个班级。6.
7、 a storm of .常常指感情猛然爆发或强烈表现（Sudden violent outburst or display of strong felling） 一阵猛烈的抗议a storm of protests 一阵弹雨/箭雨 a storm ofbullets/arrows 一阵暴风雨般的掌声/欢呼声a storm of applause/cheers 一阵辱骂/抨击a storm of abuse/criticism7. have/make a strong/great impact on对.有（或产生）巨大影响（冲击） 翻译： 这场反对吸烟的运动对年轻人有极大的影响。 这本书对读者
8、产生了巨大的影响。拓展： have an effect on have an influnce on8. Identical adj.同一的，一模一样的我们双方对应当怎么办的看法是一致的。We in our views of what should be done.这是我们去年住过的那家旅馆。This isthat we stayed in last year.9. be appropriate to.适合于；与.相称的（=be suitable for a particular person, condition, occasion or place; fitting） 用与你的题目相称的题
9、材写。 Write in a style to your subject. 他的便服，不适宜在这样正式的场合穿。 His casual clothes were not for such a formal occasion.10. accumulate vt/vi收集，聚集，堆积。翻译：He accumulated a fortune by hard work.教育的目的不仅仅是知识的积累。 .Dust accumulated during my absence.accumulation n.积聚the accumulation of knowledge .11. beboundtodosth
10、.l）注定，2）一定会（法律责任或义务）做某事。明天天气一定会变好。我觉得有必要对你说，你酒喝得太多了。Part 3随堂练习：comp Ii cated fate atta i n cast accumuI ate reform carrierAs Freddy the frog grew older, he only had one ambition left to - to continue his career forever. To do this he thought that he would have to clone himself. The doctor explained
11、that this was a procedure that he should considercarefully. Shortly after Freddy did some research, he discovered theof Dolly the sheep. It seemed as if a clone was a of more weaknessesthan its original. Freddy was down and looked for some way tothe cloning procedure to avoid this problem. Sadly this seemed impossible. So Freddy made up his mind to enjoy his singing and to as many happy experiences as he could so that when he retired he would be able to look back on his life with satisfaction.