译林版必修4 Unit 3 Language Points 3 教案 .doc

period 5 language focusiiiteaching goals1. enable the ss to understand the passage better. 2. enable the ss to master some important words and expressions in the text. . teaching important points help the ss understand some difficult sentences. teaching difficult points how to master the words and expressions.teaching aids a multimedia and a tape recorder. teaching procedures and ways step i greetings and revisiongreet the whole class as usual. review the language points talked about in the last lesson.step ii language points17.he left university in order to concentrate on the writing. ( on page 51 )concentrate认集中；全神贯注；专心；专心致志；专注concentration n. 集中; 专心 concentrator 集中者，专业研究者concentrated adj 集中的；全神贯注的；全力以赴的concentrate onupon 全神贯注于；致力于；专注于i must concentrate on my new task 我必须专注于我的新任务。he concentrated his energies on studying 他把精力专注于研究。he is a boy with little power of concentration. 他是个注意力不易集中的男孩。exercise:(完成句子)这家公司把工作重点集中在欧洲市场。this firm_ _ the european marketconcentrate on专心做某件事”. 18. if the pc ( no. 7 ) i was using had had a good keyboard, i would not have made so many mistakes.该句用了虚拟语气结构。虚拟语气表示说话者的建议、不可实现的主观愿望和与事实相反的假想。虚拟语气通过谓语动词的特殊形式来表示。与过去事实相反的虚拟条件句结构为：条件状语从句if+主语十动词的过去完成式+其他成分主句主语+wouldshou1dcouldmight+have+过去分词+其他成分if had followed the doctors advice，1 would have been all right 如果我听从了医生的建议，我的病早该好了。if you had been here earlier，you would have seen your mother如果你早点到这里来你就会看到你母亲了。if he had come yesterday ，he would have met bill 如果昨天他来了他就会见到比尔了。 exercise: if he , he _ that food luckily he was sent to the hospital immediatelya. was warned；would not take b. had been warned；would not have taken c. would be warned；had not taken d .would have been warned；had not taken 句意为：如果他受到了警告，他就不会吃那食物了。幸运地是他马上被送到医院去了。 19. during their journey, the professor and his nephew come across the central sea, a big underground ocean. ( on page 58 line 6-70)1)come across(偶然)遇见，碰到；无意中找到i came across his name on the list 我无意中在名单上发现厂他的名字。 she came across an old school friend in oxford street this morning今天早上她在牛津大街碰到一位老校友。he came across some old photographs in a drawer 他在抽屉里偶然发现一些旧照片。2)come的相关短语come back 回来；再度流行；东山再起come before 被提交给某人进行讨论，作出决定或判决；比更重要 come between 干预；离间；妨碍 come by 得到；偶然获得 come down 坍塌；落下；着陆；下降；降低 come forward 站出来；白告奋勇；挺身而出 come along 进展进步；(尤指健康)好转 come at sb 攻击某人 come through (消息)传来 come up 被讨论；被提及 come up with 找到或提出 come about 发生 1) how did this dangerous situation come about? 这样危险的局面是怎么出现的?mothers coming along nicely ，thank you 谢谢!我母亲的身体好多了。 he came at me with a knife 他拿着刀子向我扑过来。john lets nothing come between himself and his work 约翰从来不让任何事情打搅自己的工作。mary came _ some source material she was in great need of in the library a about b along c across d. through 句意为：玛丽在图书馆里发现了一些她非 常需要的原始材料。come across无意中找到，(偶然)遇见”； come about发生；come along进展进步；(尤指健康)好转；come through(消息)传来”。 20. instead of waiting to be rescued, the three young people teach themselves astrophysics.( on page 58 line 30-31 )instead of 代替；而不是shall we have fish instead of meat today ? 我们今天吃鱼不吃肉，好吗?we should encourage him instead of laughing at him 我们应当鼓励他而不应嘲笑他。production increases quickly instead of slowly 生产增加很快而不是很慢。insteadinstead of 1)instead是副词，“替代”、“顶替”、“反而，却”，一般放在句末，否定上文提到的事物，有时也可放在句首或句中。 in stead of是介词短语，“代替”、“而不是；而没有”一般放在句首或句中，否定of后面的宾语。 instead of还含有“对比”的意思，译成汉语时，“代替”两词不一定译出，但“代替”之意隐约可辨。 2)若要点明“被代替的人或物”，instead之后则须加of；若不需要具体点出来“被代替的人或物”，则不加of。 3)instead of后面一般接名词、代词、动名词作宾语，表示“代替、顶替、而不(是)”；但有时候instead of能起连词作用，其后可接与其前相对等的成分，如介词短语、形容词、副词等。 if you are busy，you may come another day instead 要是你忙的话，就改日再来吧。a person with good manners never laughs at people when they are in troubleinstead，he tries to help them有(讲)礼貌的人，当他人遇到困难时，从不嘲笑。相反。却是努力地去帮助他们。if you have no time，i11 go instead of you 如果你没时间，我愿替你去。1 want to fly to beiijing instead of taking a train 我想坐飞机去北京，不想坐火车去。 things will be better instead of worse 形势将更好而不会更糟。exercise:we had a party in the garden_the houseainstead of binstead of in cinstead dinstead in 解析 in the house与in the garden是并列成分，instead of前后成分要一致。step iii vocabulary practicein this step, the ss will do some practice with the key words and phrases. they are supposed to learn some new words in contexts.t: now weve learned the usage of some important words and phrases. ill have a check about how well youve mastered them. open your books and turn to page 44. youre to finish exercises d and e alone within four minutes. are you clear?give the ss four minutes to finish the exercises.t: ok, time is up. now let s check the answers together.check the answers with the ss.for exercise d, the ss can work in pairs and do somet: now that weve learned a lot about the important words and expressions, lets do some exercises together. open your books and turn to page 106-107. please finish al, a2 and b 1 alone within 6 minutes.give the ss some time to finish the exercises alone.t: time is up. have you finished? now lets check the answers together.check the answers together with the ss.let the ss read the sentences one by one. check the answers and make some necessary explanations.step iv summary and homeworkt: in this period weve learned something about a business proposal and some language points of this unit . but what is proposal ?proposal: a plan or suggestion which is made formally to an official person or group, or the act of making it. please read the reading strategy on page 43 again and revise the language points just we learned. then do practise more. after class, you should s