译林版高中英语必修四教案： Unit3 Tomorrow‘s world Word power教学设计.doc

单元：unit 3 tomorrows world板块：word power课堂设计指导思想：本节课是以读、写为主的词汇教学课。内容包括用名词或动词加上后缀构成抽象名词，以及与电脑相关的词汇等。学习一定的构词法知识，可以有效地拓展学生的词汇量。通过构词法教授词汇，不仅可以使学生利用较少的时间掌握较多的词汇，而且还可以使学生通过对词缀的了解来猜测词义，从而扩大词汇量。本课主要通过引导学生自行归纳抽象名词的构成规律的方法进行教学，不仅有助于增加学生的词汇量，而且可以使学生初步形成自己的词汇认知策略，学会根据词根及后缀来猜测词义。teaching aims: 1. learn how to form abstract nouns from verbs and adjectives by adding suffixes.2. learn some words related to computers.3. expand related vocabulary and apply them practically.teaching procedures:step 1 revision（ppt page 4，显示表格，实例可写在黑板上）help students revise the common suffix used to form adjectives learnt in unit 1 using the following chart and ask students to give more examples.suffixmeaningexamples(adjectives)-icalhaving the quality ofmedical, electrical, grammatical, practical-ablehaving the ability ofbelievable, acceptable, reasonable, enjoyable-ouslike, full ofadventurous, dangerous, prosperous, conscious-fulcharacterized byjoyful, helpful, useful, mouthful, handful-lesswithoutuseless, careless, helpless, hopeless, cloudless【设计说明】复习以前所学的构词法知识，激活学生对后缀的相关记忆，以旧带新，有助于提高学习效率。step 2 lead-in1. ask students to compare the following two groups of words.（ppt page 5，鼠标点击，逐条显示）group 1: house, milk, driver, dog, papergroup 2: revision, preparation, decision, difference, arrangementask students to consider the following questions:(1) which part of speech is each of the following words?(2) what are the similarities and the differences between the two groups?answers(1) they are all nouns.(2) the words in group 1 refer to physical things and those in group 2 refer to ideas, actions and qualities.2. tell students that the nouns in group 2 are called abstract nouns. ask students to read the definition of abstract nouns on page 46.（ppt page 6，鼠标点击，逐条显示，点击稍慢）3. ask students to think of more abstract nouns. and show them the following words as examples:（ppt page 7, 显示单词）revision, direction, decision, preparation, satisfaction, argument, judgement, disappointment, excitement, civilization, dependence, difference, assistance, pleasure, loyalty, cruelty, action, failure, carelessness, happiness【设计说明】通过分析、对比，引导学生自己发现抽象名词的特点，即不可为人的五官感知。随后在明确抽象名词的定义后，用实例加深学生的印象。step 3 ways to form abstract nouns from verbs and adjectives1. ask students to categorize the words on the black board according to the suffixes. then ask students to see what words they are and which part of speech they are if the suffixes are removed using the following form.（ppt page 8，鼠标点击，逐条显示，只举两组为例）nounsoriginal wordspart of speechsuffixrevisionreviseverb-siondecisiondecideverb-sionpreparationprepareverb-tionsatisfactionsatisfyverb-tionargumentargueverb-mentjudgementjudgeverb-mentdependencedependverb-enceassistanceassistverb-encedifferencedifferverb-encepleasurepleaseverb-urefailurefailverb-urecarelessnesscarelessadjective-nesshappinesshappyadjective-nesscivilizationciviladjective-tionloyaltyloyaladjective-tycruelty,crueladjective-ty2. ask students to read the instructions on page 46. ask them to compare the words on the screen with the words in the tables.3. tell students that most abstract nouns are uncountable, only a few of them are countable. ask them to read the following examples:（ppt page 9，鼠标点击，逐条显示）hopea hope; ideaan idea; situationa situation; knowledgea knowledge of4. ask students to do the exercise on page 46 individually.answers(1)developmemt(2)popularity(3)failure(4)connection(5)improvements(6)presentation(7)achievement(8)admiration【设计说明】鼓励学生自己进行归纳、整理，得出动词或形容词后加后缀构成名词的规律，最后以填空练习巩固所学内容。step 4 words related to computers1. ask students to read carefully the picture on page 47 and ask students to answer the following questions:（ppt page 13，鼠标点击，显示问题，图像书上有，不再附加）(1) can you name the different parts of the computer?(2) can you describe their functions?answerspartfunctionfloppy disca flat piece of plastic for storing informationusb disca portable, pocket-sized disk that can store a lot more information than a floppy diskcd-rom/dvd-roma cd or a dvd on which large amounts of information, sound and pictures can be storedkeyboarda set of keys for typingprintera machine that puts the words and pictures onto papermousea small device moved by hand to move the cursor on a computer screenmouse mata small square of plastic that is the best kind of surface on which to use a computer mousehard drivea disk that can store more information than a floppy or usb diskmonitor/lcd monitora screen that shows information from a computerscreen/lcd screena part where you see the words and picturesspeakera part of the computer where the sound comes out2. ask students to read the instructions and complete the exercises on page 47.answers(1)keyboard(2)mouse(3)data(4)floppy disks(5)cd-roms(6)cpu(7)connect(8)e-mails(9)information(10)web【设计说明】通过图片，帮助学生学习电脑各部件的名称及相关作用，用缺词填空的形式进行巩固。step 5 summary（ppt page 12，鼠标点击，逐条显示）make a summary about what have been