英语派生构词法--词缀教案.doc

Title: Derivation and Word Spelling Class style: New Period: One Teaching method: Examples and Explanation Teaching tools: Exercise paper Teaching Goals:①Let ss be familiar with common prefixes and suffixes ②Teach ss a good way to do word spelling Important points: the meanings of different prefixes or suffixes Difficult points: how to fill in word spelling with correct forms Teaching process: Step1: Leading-in Asking the difficulties ss may meet in doing English reading, what causes this difficulty….. 引出生单词对阅读的影响，那我们应该如何去攻破这些生单词？以此引出词缀对于猜测单词意义的妙用。 In conclusion, 由一个词根加上前缀和（或）后缀构成一个新词。词缀有两个作用，形成新的词意和词性。 Eg. independent international Step2:Warming-up Let’s do some exercises to check up your understanding about it EX1. Complete the following sentences by adding a prefix to the words. Rose said that it was ___fair if Dad gave me a dictionary but gave her only a diary. The mother ___dressed the baby, then put him in a basin of warm water. Though he didn’t win any medals in the last sports meet, he was not ___couraged. It’s ___possible for anyone to finish the work within such a short time. Please don’t ____understand what I have said. This cloth would be ___visible to anyone who was ___fit for the office he held From the exercises, we can see many prefixes. Then let’s do next exercises. EX2. Add a negative prefix to each group to create words with opposite meaning. ____-appear ability agree honest ____-usual expected experienced willing happy lucky fortunately ____-convenient correct capable visible ____-possible polite mature ____-stop smokers ____-understand take fortune lead Step3: Expanding Conclusion Prefixes change the meaning of the words.Do you know the meaning of the following prefixes? Can you list more words with these prefixes? Come on ! EX3.re—retell en--encourage post--postwar pre—pre-reading under--underground over--overwork sub--subway Sino—Sino-American Step4: Suffix Now ,let’s review som