(
课件网) Unit 4 Hands-on fun Period Five Word power 通过本节课的学习, 同学们将能： 1.理解并掌握前缀“un-”、“in-”和“im-”的含义及用法，学生能够正确使用这些前缀将形容词变为反义词。 2.在实际对话和写作中运用带有前缀的形容词。 学习目标 Word power Presentation inactive The boys like playing basketball. They are active in doing sports. But they are _____ in study. not active Presentation untidy possible impossible happy unhappy active inactive tidy prefixes 前缀 We can add _____ before an adjective to express the opposite (相反的) meaning. un-, im-, in- 拓展延伸 able friendly patient perfect valuable formal ... unable unfriendly impatient imperfect invaluable informal 拓展延伸 polite possible patient impolite impossible impatient If the adjective begins with “p, m, b”, we usually add “im-” before it. But: pleasant unpleasant popular unpopular A Add the correct prefixes to the words below so that they have the opposite meanings. You may use a dictionary to help you. 1 interesting _____ 2 sure _____ 3 able _____ 4 friendly _____ 5 active _____ 6 patient _____ 7 expensive _____ 8 perfect _____ uninteresting unsure unfriendly inactive impatient inexpensive imperfect unable B Read the conversations below. Fill in the blanks with words in the box, adding the correct prefixes to them. correct tidy usual possible patient 1 Simon: Do you spend much time doing DIY, Nora Nora: Yes, I do! It's _____ to find me without a DIY job to do. What about you Simon: I'm not a fan of DIY because I'm too _____. Nora: Oh yes, it's _____ to finish a DIY job if you are not patient. unusual impatient impossible 2 Mum: Suzy, your room is really _____—things are all over the floor. Suzy: Sorry, Mum. I'll tidy up soon. It seems some of the answers in my homework are _____.I'm looking for my textbooks to check. untidy incorrect correct tidy usual possible patient Language points Sorry, Mum. I'll tidy up soon.对不起，妈妈，我立刻整理。 tidy，可作及物动词和不及物动词，意为“使整洁；弄整齐；使有条理”。 常见短语为tidy up。 Please tidy up the classroom. 请整理教室。 【对点练习】 Your room is so dirty. You must before your friends arrive. A．tidy up it B．put up it C．tidy it up D．put it up C 一、用所给单词的反义词进行填空。 1. Don’t be _____ (patient). He is only five years old. 2. It’s _____ (usual) for him to be rude. He is always polite. impatient unusual 当堂检测 3. Nick’s room is really _____ (tidy). His mother is angry with him. 4. It’s hot today. I feel _____ (comfortable). 5. The dog was really _____ (friendly) to me. It barked at me all the time. untidy uncomfortable unfriendly 二、选词填空。 1. Some people are _____ ( friendly, unfriendly) to birds. They throw stones to them. 2. Some people feel _____ (happy, unhappy) that the organization gives poor people such small and _____(comfortable, uncomfortable) flats. unfriendly unhappy uncomfortable 3. It is _____ (safe, unsafe) to walk alone on the street at night ... ...
