重大版高中英语4册unit1教案

1、Unit 1 Plant WorldTeaching Aims:1. Know the use of the new words.2. Improve the Ss reading ability Teaching Important Points:1. Improve the Ss reading ability.2. The new words.3. Language pointsTeaching Difficult Points:4. Improve the Ss reading ability.Master the new words.Language points.Teaching

2、Aids:a tape recordera projectorthe blackboardTeaching procedures:Period1 Getting ReadyStep1 GteetingGreet the students as usual.完成Getting Ready中的第1项1) 仔细观察投影仪上的两幅画，鼓励学生积极思考：可以看到竹子的什么部分？2) 迅速汇集学生的反馈意见，学生可用汉语表达，引导他们说出：枝干、竹笋、叶、茎等。3) 择机把生词branch, stem, shoot, pulp等引出，并表在图上相应的部位。Step2 第二项活动1） 指着屏幕上的画，用刚学

3、会的新词来描述，把colored word 逐步引入，形象描绘。2） 给学生五分钟左右的时间完成选词替换的任务，然后叫学生大声地朗读出来。Step3 第三项活动1） 再次观察图画，请同学大胆推测竹子是“草”还是“树”，并说出充分理由。2） 鼓励同学用英语表达，教师注意掌握时间。3） 事先准备一种或几种竹制品，如筷子、果盘等，鼓励学生说出尽可能多的用途。参考答案：1. branch, leaf, stem, shoot2. a, a, a, b, b, b, a, b, a3. openPeriod 2ComprehendingStep1 GteetingGreet the students a

4、s usual.本篇文章Bamboo是一篇典型的知识性说明文，但难度不是很高，非常适合精读课文。它首先说明竹是什么，从而消除人们的误解；然后介绍了竹子的种类，形态特点，生长特性；第三部分着重工业、农业、生活三方面介绍了竹子的用途，同时这部分也是文章的重点。要求学生阅读时，对Margin Notes中的问题进行思考。重点在于根据语境和图画猜测词义。Step 2 处理Getting Ready中的第3项1） 鼓励学生想象出“竹”在生活中的利用。2） 给学生限定的时间，要求学生“略读”，找出文中所介绍的用途。3） 请同学把竹的用途进行归类，并阐述理由。4） 迅速订正，简要说明原因。Step 3处理C

5、omprehending中的第1项1） 教师引导全体学生把所给出的8个句子先理解一边，看是否有困难。2） 让学生在限定的时间内阅读，并判断8个句子的正误。老师注意掌握整个阅读过程，注意及时帮助有困难的学生。3） 检验学生的阅读效果，如有错误，组织全体同学指出并纠正。Step 4处理Comprehending中的第3项1） 学生在老师的指导下先观察Comprehending中第二项中的内容，提示左边黑体字的含义，进而学生指导该怎样做。2） 学生运用“跳读”的方法找到答案，完成填空。3） 教师控制整个阅读过程，观察并及时提供帮助。4） 检查效果引导学生归纳得出结论，即文章分为三部分：是什么，种类，

6、用途。Step 5处理Comprehending中的第3项1） 小组或同桌讨论，在第二项活动的基础上，再回到文中去找答案。2） 教师注意控制教室气氛，适当提示有困难的学生。3） 检验效果，订正答案。Step 6 处理Comprehending中的第4项第1小题学生独立思考完成第一小题，并写在作业本上。Step 7处理Comprehending 中的第4想第2,3小题1） 采取二人或多人讨论完成第二小题，鼓励有想象力的答案，口头表达。2） 让学生课后阅读资料，讨论完成，对于学生的答案，要求其有充足的理由。Periods 3-4Language points in ReadingStep1 Gte

7、etingGreet the students as usual. Check the homework.Step2 Language points in Reading 1. Have you ever see grass growing high as a treeeven a tall tree?你曾见过哪种草长得和大叔一样高吗？growing high as a tree是现在分词后置作定语，与其修饰的名词之间存在主动关系（主谓关系）或表达进行意义，此句中growing high as a tree是现在分词短语做定语，相当于定语从句which grows high as a tree

8、.The taxi taking (= which took) us to the airport broke down.载我们去机场的出租车抛锚了。Can you think of the name of a flower beginning (= which begins) with “t” ?你能想到“t”开头的花名吗？*扩展 v-ed, to do也能作后置定语，但意义有所不同：1）v-ed作后置定语，强调与其修饰的名词之间存在的被动关系（动宾关系）或表达完成意义。The experience gained ( which has been gained) will be of gre

9、at value for us.获得的经验会对我们有很大的价值。Some of the people invited ( who have been invited) to the party cant come.有些收到邀请的人没有来参加聚会。2）to do 做后置定语，侧重表达不定式的动作稍后发生。There are many trees to plant.有许多树要种Would you like something to eat? 你想吃点什么吗？2. It grows up straight and thin, with branches at the top.它笔直修长，顶端长着枝叶

10、。grow up1) （指人或物）长大，成年，成熟She is growing up quickly.The tree planted by the president has grown up.2) 发展A close friendship gradually grew up between them.他们之间的友谊日益亲密。*辨析 grow up grow up to be grow into grow fromThe small tree has grown up to be a big tree.grow into 渐渐成为，变得，变得习惯于（新工作、角色）She is growing

11、 into a beautiful young woman.她已渐渐出落成美丽的姑娘。grow from 生长，发育Plants grow from seeds.植物是由种子发育而成的。with branches at the top, with 的复合结构作状语with + n. + adj.He lay in bed, with his eyes wide open.with +n. + adv.He fell asleep with the light on.with + n. + prep. phraseHis wife came down the stairs, with her b

12、aby in her arms.with + n. + 现在分词The day was light, with a fresh breeze blowing.with + n. + 不定式With so much work to do, I cant go to the movie.with +n. + 过去分词All the afternoon he worked with the door locked.3. It has long leaves that sway in the wind like slim fingers reaching to touch something.长长的竹

13、叶在风中摇摆，就好像伸出纤细的手指去触摸什么。此句中that sway in the wind like为定语从句，修饰leaves, reaching to touch something 为现在分词短语后置作定语，修饰fingers, 相当于定语从句 thatwhich reach to touch something.4. Not all bamboo grows tall.并不是所有的竹子长得都很高。此句所表达的意义是部分否定。结构为not all= all not 可译为“并非。都。”Not all of them went to see the film last night.昨晚

14、不是所有的人都去看了电影。= All of them did not go to see the film last night.Im not always at home on Sunday.我并非所有的星期天都在家。*归纳：部分否定和全部否定的表达方式：部分否定：在被否定的词前面加not或在谓语动词前加notAll that glitters is not gold.闪光的东西并非都是金子。Not many things are of use in the form in which they found.许多东西并非在塔门处于被发现的形式时就是有用的。全部否定：none of, neit

15、her of, nothing, none, nobody, neither, never, nowhere, nor, neithernor,Nothing there is good.那里没有一件东西是好的。Neither of you can go swimming.你们俩都不能去游泳。He cant do it, nor can you.他做不了，你也做不了。*扩展：英语句子中的否定形式很多，除了全部否定，部分否定之外，还有双重否定，意义否定，前后缀否定等。Without honesty nothing can be accomplished in the world.在世界上要办成几

16、件事，没有老老实实的态度是根本不行的。No pains, no gains.不劳无获。There is little food for us. What shall we do?我们几乎没有吃的了，该怎么办呢？Its useless talking with him. Youd better find the manager.跟他谈没用，你最好去找经理。5. There are more than 500 different kinds of bamboo in all, and some grow no higher than your ankles.总共有500多种竹子，它们当中有些长得还

17、不及你的脚踝。more than 表示“超过，不仅仅”，后接名词、形容词、副词、或从句。It never takes more than an hour.从不会超过一个小时。The result was more than he imagined.结果超出他的想象。He is more than our teacher; he is our friend.他不仅仅是我们的老师，他更是我们的朋友。*辨析：more than, morethan, no more than, not more than, no morethan, not more than1) more than超过，不仅仅 mo

18、rethan比。更多，与其说，勿宁说When her son lied again, she was more sad than angry.当儿子再次撒谎的时候，与其说她愤怒不如说她悲哀。Mr. Zhang is more a scholar than a teacher.张老师与其说是个老师，不如说是个学者。2）no more than (= only) 不过，仅仅 not more than (= at most, less than) 顶多，不超过Its useless talking with him. Hes no more than a clerk.跟他谈没用，他不过是个职员。T

19、here are not more than eight students on the playground.操场上顶多有八个学生。3) no mmore than和。一样，和。一样不 not morethan不及。I often make mistakes iin my homework, and Mary is no more careful than I am.= as careless as I am我经常作业出错，玛丽和我一样粗心。Hearing the news, she is no more satisfied than me.= Neither of us is satisf

20、ied.听到那个消息，她和我一样不满意。This story is not more interesting than the first one.= This story is less interesting than the first one.这个故事没有第一个故事有趣。in all 总共，总计(= altogether, in total)There were twelve of us in all for dinner.我们总共有12个人吃饭。no higher than= as short asnot higher than= shorter thanThis book is n

21、o cheaper than the one you bought.= This book is as expensive as the one you bought.这本书和你买的那本一样贵。6. But the most interesting thing about this remarkable plant is what people do with it after it is cut down.这种不可思议的植物最让人感兴趣的还在于人们把它们砍到之后对它的处置和利用。what 引导的表语从句。表语从句的连词与宾语从句的连词相似，由三类构成：that, wether,or when

22、, what等特殊疑问词。此句的表语从句中动词do 后缺少表物的宾语，故用连词what引导。The question is whether they will come and when they will come.问题是它们是否会来，什么时候来。He came late again. The reason was that he overslept and missed the school bus.他又迟到了。原因是他睡过了头，错过了校车。do with sth 表示“处理，对付”相当于deal with sth 但是do with往往与what 连用，而deal with 往往与how

23、连用We dont know what to do with the air pollution.我们不知道如何处理空气污染。What are we going to do with the food left over from the party?我们怎么处理聚会剩下的食物？How we can deal with the problem is unknown.我们如何处理该问题还不清楚。7. They are hallow, which makes them very light.竹竿是中空的，这使得它很轻巧。which 引导的非限定性定语从句，既能对前句中的名词进行补充，也能说明前面整

24、个句子。She heard a terrible noise, which brought her heart into her mouth.她听到一个恐怖的声音，吓得心脏都快跳到嘴里了。The weather turned out to be very good, which was more than we could expect.结果天气很好，这超出了我们的预料。*辨析：which 和 as 都能引导非限定性定语从句，二者用法如下1) 当主句和从句的语义一致时用as,反之用whichHe made a long speech, as was expected.他做了冗长的演讲,这一点大

25、家都料到了。He made a long speech, which was unexpected.他做了冗长的演讲，这出乎大家的意料。2) 当非限定性定语从句为否定句时，常用which 引导Tom drinks a lot every day, which his wife doesnt like at all.汤姆每天喝大量的酒，这是他太太很不喜欢的。3)which引导的定语从句一般放在主句后，as引导的定语从句放在主句前后均可。As everybody knows, Chongqing is a very beautiful city.人人都知道重庆是一个美丽的城市。4) 当as 在定语

26、从句中作主语时，后面常接下列句型：as is know, as is said, as in reported, as is announced等As is known to all, Mr. Wang is a good teacher.众所周知，王老师是一位好老师。5) as引导的定语从句要译为“像。一样”，而which引导的非限定性定语从句要译为两个并列句。As we all expected, he succeeded in passing the important exam.像我们期待的那样，他成功地通过了那个重要的考试。The sun, which rises from the

27、east, is red.太阳是红色的，它从东方升起。8. In warm countries. many people have their houses made almost entirely of bamboo, the walls, the roof, and the floor.在气候温暖的国家，许多人家的房子，包括墙，屋顶和地板都是用竹子做的。have sth done 请人做某事，强调使某事予以处理Why dont you have your hair cut?你怎么不理发呢？The wash machine I had had repaired last week went

28、wrong again.我上星期刚拿去修过的洗衣机又坏了。*辨析：have sb do have sb doing have sth to do have sbsth done1)have sb do命令或安排某人做某事，相当于make sb do let sb doIll have the pardoner plant some tees.我要让园丁种一些树。Have the driver bring the car round at 4:00.叫司机四点左右开车过来。2)have sb doing 让某人持续做某事The boss had his workers working for 1

29、4 hours a day, which made them very unhappy.老板让员工每天工作长达14小时，这使得员工很不高兴。3)have sth to do有事情要做I cant go with you because I still have a lot of homework to do.我不能跟你去因为我还有许多作业要做。4) have sth done请人做某事9. Nearly everything inside their houses is made of bamboo, too.而且房内的陈设几乎都是竹制的。nearly 几乎，很接近地（客观描述）Nearly

30、everyone has known the result.几乎每个人都知道结果了。The bottle is nearly empty.瓶子快空了。She nearly won first prize.她差点获得一等奖。（习语）not nearly 相关很远，远远少于There isnt nearly enough time to learn all these words.要把这些新词都学会，时间远远不够。*辨析：almost（主观估计）& nearly1)多用于形容词、副词、动词前，可以和nearly互换Its a mistake they almost always make.这是一个

31、他们几乎总在犯的错误。Dinner is almost ready.晚餐差不多好了。2)还可用于表否定的词no, nobody, none, nothing, never之前（nearly不能与这些词连用）Almost no one believed him.几乎没人相信他。The speaker said almost nothing worth listening to.那个演讲者几乎没说什么值得听的内容。10. Who can tell what the new use someone may find for this special kind of grass bamboo?也许将来

32、人们会发现这种特殊的草竹子还有其他用途，谁知道呢？tell与情态动词cancould 连用，表示“区分，辨别，说出”I cant tell the difference between margarine and butter.我尝不出人造黄油和黄油有什么区别。Can you tell Tom from his twin brother?你能分辨汤姆和他的孪生兄弟吗？-These kittens look exactly alike.-How can you tell which is which?Periods 5Word PowerStep1 GteetingGreet the students as usual. Check the homework.Step2写词练习1)请学生认真阅读所给出的英文解释，注意所给词的词性2)在理解了词义的基础上，回到课文中，找出并标记出这些词汇。3)学生通过课文提供的语境，检测自己对这止匕词的理解。4)不参考课文，回到练习中，正确地拼写出这些词汇Step 3 1)学生认真阅读这8个句子，理解其句意。同时注意画线部分的含义。2)从前一个练习中的