江苏省大丰市万盈二中八年级英语上册 Unit 5 Birdwatchers-Period 3 Vocabulary 教案 牛津版.doc

Period 3 Vocabulary
Teaching goal 教学目标
1. Target language 目标语言
Words 生词
manners litter polite impolite necessary unnecessary regular irregular honest dishonest correct incorrect common uncommon impossible possible friendly unfriendly welcome unwelcome able unable
2. Ability goals 能力目标
Learn more adjectives by adding the prefixes dis-, im-, in-, ir-, un- to them, which will express the opposite meanings of the words.
3. Learning ability goals 学能目标
Help Ss to sort out and learn more words.
Teaching important and difficult points 教学重难点
Use the words correctly.
Teaching aids 教具准备
Projector, cards and pictures.
Teaching procedures and ways 教学过程与方法

Step I Revision
T: In the last lesson we read the passage Zhalong, a special place, and learned much about it. Now, can you tell me something about it? Wang Feng, you try, please.
S: Zhalong, a special place, means Zhalong Nature Reserve. It lies in the west of Heilongjiang province. It is a vast expanse of Wetland in the world, and there are rich fish and wildlife. It is an ideal living area for the rare red-crowned cranes, and other seabirds. There are more than 200 kinds of birds there, and especially the red-crowned cranes stand out. The study and protection of the red-crowned cranes has been very successful so far.
T: Well done. We couldn’t think of Zhalong without the red-crowned cranes. Yesterday I asked you to use a library or the Internet to find out more about World Wetlands Day. Who’d like to say something about it?
S: In order to help people to understand the importance of protecting Wetlands, February 2nd was made World Wetlands Day in 1996. Wetland just like woods and oceans is called ecosystems of the earth. Wetland not only provides food and shelter for wildlife, it but also plays an important part in keeping the balance of nature.
T: Nice work. Today let’s come to vocabulary.

Step II Word formation
This activity leads to the new grammar – prefix.
1. Use an adjective and its opposite to make a sentence in class
e.g. Wetland is a countable noun, but it is usually used as an uncountable noun.
Write “countable” and “uncountable” on the black board. Tell Ss about the word formation. We can change the meaning by adding a prefix. Adding the prefixes dis-, im-, in-, ir-, or un- to an adjective will express the opposite meaning of the word.
2. Let’s the students guess some meanings of the underlined words in the sentences on the screen.
1) If you tell the truth, you are honest. If you tell a lie, you are dishonest.
2) If someone shows good manners to others, he is a polite person. If not, he is impolite.
3) His answer is correct, while mine is incorrect.
4) The new chair is comfortable to sit in, while the old one is uncomfortable.
5) It is necessary for us to get more information about Zhalong, so it is not unnecessary.
6) It is important to take action to protect wildlife, so it is not unimportant.
7) A sparrow is a common bird, but the red crowned crane is an uncommon bird.
8) If we have enough time, it will be regular for us to do a bird count. If not, it will be irregular.
Write the pair words on the Bb. for Ss to watch carefully and guess the meanings of the sentences.

Step III Practice
Let the Ss match the adjectives on page 80. teacher write the pair word down on the Bb.
able – unable
friendly – unfriendly
welcome – unwelcome
regular – irregular
important – unimportant
honest – dishonest
necessary – unnecessary
possible – impossible
happy – unhappy
polite – impolite
comfortable – uncomfortable
correct – incorrect
Every means is tried to let Ss remember the words and make sentences using them. Then do exercise B.

Step IV Pair work
This active provides oral practice and written work
Ss work in pairs to think of two sentences with an adjective and its opposite. It’s important and necessary for them to use their dictionary. They are encouraged to look the words up in their dictionaries and even put down some useful sentences.
Compare which pair is the most excellent.

Step V Exercise
1. 查词典，写出下列反义的前缀形容词
willing — ( ) fair — ( ) able — ( ) perfect — ( )
certain — ( ) direct — ( ) easy — ( ) natural — ( )
2. 形容词填空
1) It is for us to learn English well in a short time. (possible / impossible)
2) Nowadays it is quite for people to go abroad for their holidays. (common / uncommon)
3) Everyone knows that nobody is . (perfect / imperfect)
4) It is clever of you to stop making friends with those __ partners. (honest / dishonest)
5) Living a life is good for our health. (regular / irregular)

Step VI Summary and homework
T: In this class, we’ve reviewed some new words of the unit by doing exercises. We’ve also learned some rules of word formation. By doing so, we can guess the meanings of some words without looking them up in the dictionary. After class learn the words by heart. Besides, don’t forget to prepare for the next period. Time is up! That’s all for today.