英语Unit5Vocabulary同步授课课件译林版八年级上.ppt

Unit 5 BirdwatchersVocabularymannersimpolitenecessaryregularirregulardishonestunnecessarycorrectn. 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. 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 don’t believe what he says, because he is not honest.I don’t 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 (not polite).polite possible patient impoliteimpossibleimpatient “im-”That coat is only 100 yuan. It’s not expensive.That is inexpensive.expensive correct inexpensiveincorrect“in-”His pulse is not regular.His pulse is irregular.regular relative responsible irregularirrelativeirresponsible“ir-” friendly  happy  comfortable  safe  healthy unfriendlyunhappyuncomfortableunsafeunhealthy“un-”necessary welcome common able unnecessaryunwelcomeuncommonunableMatch the adjectives on the left with their opposites on the right.necessaryimportantcomfortablehonestregular happyuncomfortableirregulardishonestunhappyunnecessaryunimportantLearning about birdwatchingwelcomecorrectcommonfriendlypossibleableimpossible unfriendlyunwelcomeunableincorrectuncommonComplete 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. If you wear new leather shoes, they can be _________________.incorrectuncomfortable3. 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 birds in the future.unwelcomeuncommonimpossibleSome 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 blanks•It is _______ (safe, unsafe) to walk on the street at night.•We should keep students staying away from the ___________ (healthy, unhealthy) books.unsafeunhealthy•You will be_______ to pass the exam if you don’t study hard.•There are lots of __________ kinds of birds in Zhalong.•It is _________ for you to walk the little dog once a week to the 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。