2015-2016学年北师大版 选修八unit 22 Environmental Protecion lesson3教案 (1).doc

1、Teaching goals 教学目标1. Target language 目标语言 重点词汇和短语 Vocabulary about natural disasters; Word formation.2. Ability goals 能力目标 Talk about natural disasters and aid.Practise using the vocabulary of natural disasters. 3. Learning ability goals 学能目标Enable students to talk about natural disasters and aid.L

2、earn one kind of word formation: Conversion.Teaching important points 教学重点Talk about natural disasters and aid.Teaching difficult points 教学难点How to identify confusing words.Teaching methods 教学方法 Task-based teaching method.Teaching aids 教具准备来源: 学。科。网 Z。X。X。KMulti-computer, a good dictionary.Teaching

3、procedures specifically, it is the creation of a word from an existing word without any change in form. Conversion is a fairly productive process.Often a word of one lexical category (part of speech) is converted from a word of another lexical category; for example, the noun green in golf (referring

4、 to a putting-green) is derived ultimately from the adjective green. Conversions from adjectives to nouns and vice versa are both very common and unnotable / insignificant (not worthy of notice, worthless) in English; much more remarked upon is verbing, the creation of a verb by a converting a noun

5、or other word.T: Now lets look at some examples from noun to verb.He filmed the story. / He reproduced the story on a film.他把这篇小说拍成电影.人身器官名称，用作动词，表示使用这种器官的动作。He shouldered his way through the crowd. (他用肩膀从人群中挤过去) 此外，如 to cheek (厚着脸说)、to finger (摸索)、to hand a person（用手领着）等。盛具或衣物的名称，用作动词，表示“盛” 或者“装入”。

6、He pocketed his book and pen. (他把钢笔、本子装进衣袋子)以及 to bottle (装瓶)、to can (装罐) 、to sack (装在袋里)。表示地点的名词用作动词也有类似用法：to corner (逼在角落)、to island (隔离)、to nursery (放在温室里)等等。除此之外，还有动词、副词、助动词等转化成名词的用法，我们来看一些例子：On another run they failed to see the boat. 他们第二次去的时候没有找到那只船。动词加副词转化为名词的例 子也很多：break-down (垮)、get-togeth

7、er (聚会)、set-back (挫折)、wash-out (废物)等。 另外，形容词有时候也可以转成名词，如：the greens (青菜)、great sillies (大蠢人) T: After we learned something about conversion, lets come to Vocabulary. First please look at Ex 5. What are you asked to do in Ex 5?Ss: Decide if the underlined words in the sentences are nouns or verbs. We

8、 are also asked to write down their Chinese meanings.T: Please read the first group sentences together.(After reading)T: What part of speech is “arm” in Sentence a? And what about the one in Sentence b?Ss: “arm” in Sentence a is a noun, in Sentence b it is a verb.T: Good! Now work in pairs and compl

9、ete Ex5&6. If necessary, you may use your dictionary to help you.When dealing with the exercises, remind students of the golden rule: learn vocabulary in context. First students should do the exercises individually, then compare the answers with their group members, finally Teacher checks the answer

10、s with the whole class. 来源:Zxxk.ComStep IV PracticeDeal with the exercises in Lesson 3 in Language Power on Page 56.Ex 1 is very difficult for students. They may work in groups and use a good dictionary to help them. Or Teacher may explain the confusing words to students first. This will make the ex

11、ercises less difficult for students. Ex 2&3 are not so difficult. Students may be asked to do Ex2&3 individually and eight minutes later check the answers with the whole class.Water: Flood and tsunamiWind: Hurricane and tornadoEarth: Earthquake and volcanoHere are the rules:Water beats Wind!Wind beats Earth!Earth beats Water!Make a choice:来源:学科网 ZXXK&X&K、