高中英语必修四教案-Unit5Themeparks（6）-人教新课标

学科 英语 年级/册 B4Unit5 高二年级 教材版本 人教版 课题名称 Uuit5 Theme Parks 难点名称 Word formation 难点分析 从知识角度分析为什么难 构词法一般分为三类;合成法、派生法、转化法。

合成法是将两个或两个以上的单词合在一起而构成的新词组成一个新的单词；
表达方式常见的有1.直接写在一起，2.用连字符（-连接），3.由两个分开的词构成。

派生法：在词根上加前缀或后缀构成另一个与原意略有变化或截然相反的词，前缀有表示否定意义的，如un/in/im-等等。后缀通常改变词性，构成意思相近的其它词性的词。

转化法由一种词性转化为另一种词性的词类。

从学生角度分析为什么难 针对种类多样，形式多变的构词法，学生需要掌握一定的方法，也需要一定的归纳总结能力，同时也需要积累总结并记忆一定的词汇，但学生在平时积累较少，缺乏一定的归纳总结能力，所以造成了对构词法没有掌握。

难点教学方法 任务型教学法，讨论法。

教学环节 教学过程 导入 I.Lead in Teacher asks students to read the following sentences and pay attention to the underlined words. 1.Yet, shopkeepers may have to spend extra hours to deal with problems, such as shoplifters, who always take away things from the shop without paying for them.... What does the word “shoplifter” mean? shop+lifter → shoplifter n.商店小偷/扒手 2.In recent centuries,trade,industrialization, the development of the nation-state and the spread of universal compulsory education, especially globalization and better communications in the past few decades... -zation为动词构成名词的后缀, 意为“……化”, 因此, 可猜测industrialization为“工业化”之意, 而globalization的含义为全球化. 3. He is a man with broad shoulders. n. We will shoulder the responsibilities at any time. V.take/bear 知识讲解 （难点突破）
II Presentation -Word formation i.合成法(Compounding) Space+ship →spaceship 构词法 ii.派生法（Derivation）
able →unable，teach→teacher iii.转化法（Conversion）
visit.v.→visit.n i.合成法(Compounding) 把两个或两个以上独立的词合成一个新词。

highway,warm-hearted,waiting-room ii.派生法（Derivation）
由词根(root)加前缀（prefix）或后缀（suffix）构成新词。

否定前缀 iii.转化法（Conversion）
Please stop here，and it is the bus stop. III.Practice (1)Overwork may cause diseases. (2) There was a dissatisfied look in the manager＇s eyes. （3）For them, playing well and winning are often life-and-death affairs. （4）Down-to-earth spirit is a necessity. Sharp words from a teacher can usually bring a day-dreaming student down-to-earth. （5）Her name was Rachel, and I mooned my way through the grade and high school, stricken at the mere sight of her, tongue-tied in her presence. …At any rate, my love for Rachel remained without result. We graduated from high school, she went on to college, and I joined the Army. I was sent overseas during the war. For a time we wrote, and her letters were the highlight of those terrible endless years. （6）Never trouble trouble until trouble troubles you. (trouble 词性与意义？) （7）A silence in a conversation may also show uneasiness . (8).Car rentals are becoming more and more popular as an inexpensive way of taking to the road. (9)In recent centuries,trade,industrialization, the development of the nation-state and the spread of universal compulsory education, especially globalization and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English, Spanish and Chinese are increasingly taking over. (10) Impressionism is a form of art which began in the 1870s. When you look closely at an impressionist painting, you see little dots of different colored paints. 课堂练习 （难点巩固）
表示时间的前缀 Re- 表示再一次，重新。

renew，reborn，rebuild，retell. Fore- 表示时间或位置的“在前面 ”。

foresee，forecast，foretell。

Pre- 表示在前、事先、预先。

preview，prehistory, prepay. Post- 表示时间和顺序的“在后边”。

post-war,post-graduate. 表示人和名词后缀-er/or/eer/ician/ist. 从事...职业的人，做...的人，teacher,worker,writer.visitor,educator,translator. engineer,volunteer,physician,musician,politician.artist,scientist. 形容词后缀 -able. 可/能...的。

horrible，valuable. -al. 有...性质的。natural，actual. -ant/-ent. ...的。

important， pleasant， excellent. -ic/ical/ish/ive/ful/less/ous/y/ed/ 小结 语言是随着人类社会的不断发展而发展的，一些旧词的过时意味着需要人们创造出一些新的词，而新词的产生，也大体上服从一定规则，有其规律可循。语言的这种“弃旧创新”不断完善和发展的过程体现出的就是一种规律-构词法。它对于帮助学生扩大词汇量，准确地推测文章中的词汇的含义和理解文章都有重要意义。