Unit 4 Word Power 课件 2026-2027学年译林版八年级英语上册

八年级上册 Word Power 滨海县第一初级中学 郭凤娟 Learning aims of this lesson By the end of this lesson, we will be able to: ◎ ◎ ◎ Learn prefixes un-, in-, im- and form adjective opposites. Improve word discrimination and teamwork in group tasks. Link vocabulary to real life and use English actively. 自学自练展素养 Free Talk What do you think of these DIY works? Use adjectives to describe them. messy tidy Is “messy” the opposite of “tidy”? Is there another way to form a word with the opposite meaning? untidy 自学自练展素养 Read and change Andrew is crazy about DIY. At first ,he thought he was not lucky because he always made some mistakes. He did not do any correct DIY jobs.For example, he wanted to put up a picture on the wall, but he hit a water pipe and filled the room with water. Then he bought many books about DIY and took an online DIY course.Now, no DIY job is not possible for him to finish. unlucky impossible incorrect 研学随练展收获 lucky correct possible unlucky incorrect impossible 在此输入内容，确保信息清晰简洁，便于观众快速理解。文字应简明扼要，突出重点，搭配合适的字体和配色，提升可读性。 prefixes(前缀) Opposites (反义词) A prefix is a letter or a group of letters that we add to the front of a word to form a new word. What is a prefix? Work out the rule 研学随练展收获 Work out the rule “un-”, “im-”, “in-” lucky correct possible unlucky incorrect impossible 研学随练展收获 Examples: 研学随练展收获 For most of the adjectives, we add “un-” to make it opposite. friendly  happy  comfortable  fair  important  unfriendly unhappy uncomfortable unfair unimportant tidy  able  sure  lucky  usual  untidy unable unsure unlucky unusual More examples 8 研学随练展收获 But some adjectives are special. We should add “in-” before them to make the opposite meaning. expensive  correct  complete  active  direct  inexpensive incorrect incomplete inactive indirect If the adjective begins with “p”, we usually add “im-” before it. polite  possible  patient  perfect  impolite impossible impatient imperfect But: pleasant popular unpleasant More examples unpopular 9 检学综练展成效 uninteresting unable inactive inexpensive unsure unfriendly impatient imperfect 检学综练展成效 After watching the words and say the opposite meaning quickly polite possible active correct tidy unusual important friendly direct perfect patient sure Play a game 检学综练展成效 unusual incorrect untidy impossible impatient 检学综练展成效 词汇运用 1. Itˈs ____________ (usual) to see snow in June. Itˈs usually hot. 2. Donˈt believe him. What he told you is ____________ (correct). 3. Itˈs ____________ (possible) for us to finish the work within hours. It’s too hard. 4. It started raining right after I hung my clothes outside. How ____________ (luck)! 5.If someone doesnˈt show good manners (举止) to others, he is ____________ (polite). 6.My homework is ____________ (complete) because I forgot to do the last two Maths problems. Practice unusual incorrect impossible unlucky impolite incomplete 检学综练展成效 My cousin Andrew is crazy about DIY. But I am _____________ (interested) in DIY because I am _____________(confident) of myself. I am a little __________(patient) and _________ (willing) to try new things. However, Andrew sets a good example for me. At first, Andrew made some mistakes so his DIY jobs were _________(correct). But he didn’t lose heart. He bought many books about DIY and took an online DIY course. Now he knows his way around all kinds of DIY. No DIY job seems _________ (possible) to him. With his encouragement, I decide to try food making. I follow the instructions from an online video when making a fruit salad. But when I finish, I am ________ (happy) to find that it looks terrible. But I don’t give up. I get the ideas from my mum. I shouldn’t leave the fresh apple in the air for a long time. So I try a second time. This time everything seems ________(usual) and perfect. I find DIY fun and interesting! uninterested unconfident impatient unwilling incorrect unhappy impossible unusual Add the correct prefixes to the words and finish Suzy’s DIY story. Read and complete 2 Choose to do 1 Must do Homework 1. Copy the adjectives and their opposite forms with prefixes； 2. Write 3 sentences about your daily life using words with “un-”, “in-”, or “im-”. Find 5 more adjectives with these prefixes from your reading materials, note their meanings, and share them in the next class. $