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1、Unit 5 BirdwatchersVocabularymannersimpolitenecessaryregularirregulardishonestunnecessarycorrectn. 礼貌，风度礼貌，风度adj. 无礼的，粗鲁的无礼的，粗鲁的 adj. 必要的必要的adj. 规则的规则的adj. 不规则的不规则的adj. 不诚实的不诚实的adj. 不必要的不必要的adj. 正确的正确的 New words commonimpossibleunfriendlyunwelcomeunableincorrectuncommonlitteradj. 普通的，一般的普通的，一般的adj.
2、不可能的不可能的adj. 不友好的不友好的adj. 不受欢迎的不受欢迎的adj. 不能的不能的adj. 不正确的不正确的adj. 不平常的不平常的n. 垃圾垃圾Using prefixes to form adjectives with opposite meaning.单词中位于词根前面的部分就是前缀。前缀，可以改变单词中位于词根前面的部分就是前缀。前缀，可以改变单词的意思。单词的意思。前缀前缀 “dis-”, “im-”, “in-”, “ir-”, “un-” 表示否定。表示否定。I dont believe what he says, because he is not honest.
3、I dont believe what he says, because he is dishonest.dishonestdishonorable“dis-”This is not a honorable action. This is a dishonorable action. honest honorable Opposites If someone shows good manners to others, he is a polite person. If someone does not show good manners to others, he is impolite (n
4、ot polite).polite possible patient impoliteimpossibleimpatient “im-”That coat is only 100 yuan. Its not expensive.That is inexpensive.expensive correct inexpensiveincorrect“in-”His pulse is not regular.His pulse is irregular.regular relative responsible irregularirrelativeirresponsible“ir-” friendly
5、 happy comfortable safe healthy unfriendlyunhappyuncomfortableunsafeunhealthy“un-”necessary welcome common able unnecessaryunwelcomeuncommonunableMatch the adjectives on the left with their opposites on the right.necessaryimportantcomfortablehonestregular happyuncomfortableirregulardishonestunhappyu
6、nnecessaryunimportantLearning about birdwatchingwelcomecorrectcommonfriendlypossibleableimpossible unfriendlyunwelcomeunableincorrectuncommonComplete the sentences below.1. Zhalong is a nature reserve. It is _ to hunt or fish there.2. When you go birdwatching, you sometimes have to walk a long way.
7、If you wear new leather shoes, they can be _.incorrectuncomfortable3. If you are interested in birds you can go to Zhalong. But if you leave litter there, you will be _.4. There are not many red-crowned cranes in the world. They are _.5. If we do not protect the wetlands, it will be _ to see these b
8、irds in the future.unwelcomeuncommonimpossibleSome people are _ ( friendly, unfriendly) to birds. They throw stones at them.Some people feel _ (happy, unhappy) because the government give poor people such small and _ (comfortable, uncomfortable) flats.unfriendlyunhappyuncomfortable Fill in the blank
9、sIt is _ (safe, unsafe) to walk on the street at night.We should keep students staying away from the _ (healthy, unhealthy) books.unsafeunhealthyYou will be_ to pass the exam if you dont study hard.There are lots of _ kinds of birds in Zhalong.It is _ for you to walk the little dog once a week to th
10、e park.unableuncommonnecessaryimportant, happy, able, necessary, regular, possible, commonFill in the blanks with the words below.It is _ to keep quiet when you watch birds and insects.He felt _ because he lost his wallet.There is a _ rain in the Sahara desert every year.Is it _ to get to the city by train?importantunhappyregularpossible
