Unit 2 Amazing numbers 单词讲解课件 2026-2027学年英语沪教版八年级上册

该初中英语单元复习课件系统梳理了“Amazing numbers”主题下的核心词汇，通过音标标注、词性分类、词性变换、短语搭配及语境例句的多维解析，构建起词汇音、形、义、用的完整知识网络，强化单词间的内在逻辑联系。 其亮点在于设计分层递进的词汇运用练习，如单词拼写、适当形式填空及主题选词填空，既夯实语言能力基础，又通过词性转换训练（如“challenge”变“challenging”）培养思维品质中的分析与推断能力。这种设计助力学生个性化巩固词汇，也为教师提供精准复习抓手，提升教学效率。

— • Unit 2 Amazing numbers • — 单词讲解 Vocabulary flight /flaɪt/ n.（尤指乘飞机的）航程 schedule /ˈʃedjuːl/ n. 日程安排 everywhere /ˈevriweə(r)/ adv. 到处；各个地方 challenge /ˈtʃælɪndʒ/ v. 向（某人）挑战 prize /praɪz/ n. 奖赏；奖励 promise /ˈprɒmɪs/ v. 承诺；保证 chessboard /ˈtʃesbɔːd/ n. 国际象棋棋盘 silver /ˈsɪlvə(r)/ n. 银 reply /rɪˈplaɪ/ v. 回复；答复 hesitation /ˌhezɪˈteɪʃn/ n. 犹豫 wonder /ˈwʌndə(r)/ v. 想知道；琢磨 agree /əˈɡriː/ v. 同意；赞成 Vocabulary currently /ˈkʌrəntli/ adv. 目前；当前 check /tʃek/ v. 检查；核查 budget /ˈbʌdʒɪt/ n. 预算 province /ˈprɒvɪns/ n. 省份 sharply /ˈʃɑːpli/ adv. 急剧地；突然大幅度地 count /kaʊnt/ v. 计算（或清点）总数 system /ˈsɪstəm/ n. 系统 symbol /ˈsɪmbl/ n. 符号；记号 represent /ˌreprɪˈzent/ v. 代表 exactly /ɪɡˈzæktli/ adv. 准确地；确切地 — — — • Unit 2 • — — — Words and expressions flight /flaɪt/ n. （尤指乘飞机的）航程；航班 词性 变换 - fly v. 飞；飞行（过去式 flew，过去分词 flown） 短语 - flight schedule 航班时刻表 - a long-haul flight 长途航班 例句 1. My flight to Beijing is at 9 o’clock tomorrow morning. 我明天早上9点飞往北京的航班。 2. The flight from London to New York takes about 8 hours. 从伦敦到纽约的航程大约需要8小时。 schedule /ˈʃedjuːl/ n. 日程安排； v. 安排；预定 短语 - a busy schedule 繁忙的日程 - schedule a meeting 安排会议 例句 1. I need to check my schedule to see if I’m free this weekend. 我需要查看我的日程安排，看看这周末是否有空。 2. The meeting is scheduled for next Friday afternoon. 会议预定在下周五下午举行。 everywhere /ˈevriweə(r)/ adv. 到处；各个地方 短语 - look everywhere 到处找 - go everywhere 去各个地方 例句 1. I’ve looked everywhere for my keys, but I can’t find them. 我到处都找过我的钥匙了，但就是找不到。 2. Flowers can be seen everywhere in the park in spring. 春天公园里到处都能看到花。 challenge /ˈtʃælɪndʒ/ v. 向（某人）挑战； n. 挑战 词性 变换 - challenging adj. 有挑战性的 短语 - challenge sb to do sth 向某人挑战做某事 - face a challenge 面对挑战 例句 1. He challenged me to a game of chess after school. 他放学后向我挑战下国际象棋。 2. Learning a new language is a big challenge for me. 学习一门新语言对我来说是一个很大的挑战。 prize /praɪz/ n. 奖赏；奖励；奖品 短语 - win a prize 获奖 - first prize 一等奖 例句 1. She won the first prize in the school singing competition. 她在学校歌唱比赛中获得了一等奖。 2. The prize for the winner is a new laptop. 获胜者的奖品是一台新笔记本电脑。 promise /ˈprɒmɪs/ v. 承诺；保证； n. 承诺 短语 - promise to do sth 承诺做某事 - keep a promise 遵守承诺 例句 1. I promise to help you with your homework after school. 我承诺放学后帮你辅导作业。 2. You should always keep your promises to others. 你应该始终遵守对别人的承诺。 chessboard /ˈtʃesbɔːd/ n. 国际象棋棋盘 短语 - a wooden chessboard 木质国际象棋棋盘 - set up the chessboard 摆好棋盘 例句 1. They sat down at the table and placed the chessboard between them. 他们坐在桌旁，把国际象棋棋盘放在两人中间。 2. The chessboard has 64 squares, alternating black and white. 国际象棋棋盘有64个方格，黑白相间。 silver /ˈsɪlvə(r)/ n. 银；银器； adj. 银色的 词性 变换 - silvery adj. 银色的；含银的 短语 - a silver ring 银戒指 - silver medal 银牌 例句 1. She wore a beautiful silver necklace to the party. 她戴了一条漂亮的银项链去参加派对。 2. He won a silver medal in the 100-metre race at the sports meeting. 他在运动会100米赛跑中获得了银牌。 reply /rɪˈplaɪ/ v. 回复；答复； n. 回复 短语 - reply to a letter 回信 - in reply to 作为对……的回复 例句 1. I sent him an email yesterday, but he hasn’t replied yet. 我昨天给他发了一封电子邮件，但他还没有回复。 2. She wrote a short reply to his invitation. 她给他的邀请写了一封简短的回复。 hesitation /ˌhezɪˈteɪʃn/ n. 犹豫 词性 变换 - hesitate v. 犹豫 - hesitantly adv. 犹豫地 短语 - without hesitation 毫不犹豫 - after a moment of hesitation 犹豫片刻后 例句 1. She agreed to help him without hesitation. 她毫不犹豫地同意帮助他。 2. After a moment of hesitation, he decided to tell the truth. 犹豫片刻后，他决定说出真相。 wonder /ˈwʌndə(r)/ v. 想知道；琢磨； n. 奇迹 词性 变换 - wonderful adj. 精彩的；极好的 短语 - wonder about 想知道…… - no wonder 难怪 例句 1. I wonder what time it is now. 我想知道现在几点了。 2. No wonder you are tired; you’ve been working all day. 难怪你累了，你已经工作一整天了。 agree /əˈɡriː/ v. 同意；赞成 词性 变换 - agreement n. 同意；协议 - agreeable adj. 令人愉快的；同意的 短语 - agree with sb 同意某人的意见 - agree to do sth 同意做某事 例句 1. My parents agree with my decision to study abroad. 我的父母同意我出国留学的决定。 2. We all agreed to go to the cinema together this weekend. 我们都同意这周末一起去看电影。 currently /ˈkʌrəntli/ adv. 目前；当前 词性 变换 - current adj. 当前的；现在的 例句 1. I am currently working on a new project with my classmates. 我目前正和同学们一起做一个新项目。 2. Currently, more and more people choose to work from home. 目前，越来越多的人选择在家工作。 check /tʃek/ v. 检查；核查； n. 检查 短语 - check in 办理登机/入住手续 - check out 结账退房 例句 1. Please check your homework carefully before handing it in. 交作业前请仔细检查。 2. I need to check the flight schedule to make sure I don’t miss the plane. 我需要核对航班时刻表，确保我不会误机。 budget /ˈbʌdʒɪt/ n. 预算； v. 做预算 词性 变换 - budgetary adj. 预算的 短语 - a family budget 家庭预算 - budget for 为……做预算 例句 1. We need to make a budget for our trip to save money. 我们需要为旅行做预算来省钱。 2. The government has announced a new budget for education. 政府公布了新的教育预算。 province /ˈprɒvɪns/ n. 省份 词性 变换 - provincial adj. 省的；地方的 短语 - Guangdong Province 广东省 - a province in China 中国的一个省 例句 1. Sichuan is a beautiful province in the southwest of China. 四川是中国西南部一个美丽的省份。 2. There are 23 provinces in China. 中国有23个省。 sharply /ˈʃɑːpli/ adv. 急剧地；突然大幅度地 词性 变换 - sharp adj. 急剧的；锋利的 短语 - rise sharply 急剧上升 - fall sharply 急剧下降 例句 1. The temperature dropped sharply after the rain. 雨后气温急剧下降。 2. The number of students in the school has increased sharply in recent years. 近年来，这所学校的学生人数急剧增加。 count /kaʊnt/ v. 计算（或清点）总数；数数 词性 变换 - count n. 计数；总数 短语 - count on 依靠；指望 - count down 倒计时 例句 1. Please count the number of students in the classroom. 请清点一下教室里的学生人数。 2. She can count from one to one hundred in English. 她能用英语从1数到100。 system /ˈsɪstəm/ n. 系统；体系 词性 变换 - systematic adj. 系统的；有条理的 短语 - a computer system 计算机系统 - the education system 教育体系 例句 1. The new system will help us work more efficiently. 新系统将帮助我们更高效地工作。 2. China has a good education system for children. 中国有完善的儿童教育体系。 symbol /ˈsɪmbl/ n. 符号；记号；象征 词性 变换 - symbolize v. 象征；代表 短语 - a chemical symbol 化学符号 - a symbol of peace 和平的象征 例句 1. The dove is a symbol of peace in many cultures. 在许多文化中，鸽子是和平的象征。 2. “H₂O” is the chemical symbol for water. “H₂O”是水的化学符号。 represent /ˌreprɪˈzent/ v. 代表；象征 词性 变换 - representation n. 代表；表现 - representative n. 代表 短语 - represent a country 代表一个国家 - represent an idea 代表一种思想 例句 1. She will represent our school in the national English competition. 她将代表我们学校参加全国英语竞赛。 2. The red color in the flag represents courage and bravery. 旗帜上的红色代表勇气和勇敢。 exactly /ɪɡˈzæktli/ adv. 准确地；确切地 词性 变换 - exact adj. 准确的；精确的 短语 - not exactly 不完全是；并非如此 - exactly the same 完全一样 例句 1. I don’t know exactly what time he will arrive. 我不确定他确切的到达时间。 2. Your answer is exactly the same as mine. 你的答案和我的完全一样。 — — — • Unit 2 • — — — Exercises 一、根据句意及汉语或首字母提示完成单词 1. My f______ to Shanghai will take off at 10 a.m. tomorrow. 2. You need to make a detailed s________ for your summer vacation. 3. I looked e__________ for my lost pen but didn't find it. 4. He decided to _________（挑战）his friend to a chess game. 5. She won the first _____（奖赏）in the math competition. light chedule verywhere challenge prize 一、根据句意及汉语或首字母提示完成单词 6. I _______（承诺）to help you with your English this weekend. 7. Please _____（回复）to my email as soon as possible. 8. I ______（想知道）how to solve this difficult problem. 9. You must _____（检查）your answers before handing in the paper. 10. Sichuan is a beautiful ________（省份）in China. promise reply wonder check province 二、用单词的适当形式填空 1. Learning English is a ___________（challenge）task for many students. 2. He _________（hesitation）for a moment before answering the question. 3. We had a _________（wonder）time at the party last night. 4. We reached an _________（agree）on the plan after a long discussion. 5. There was a _____（sharp）drop in temperature last night. challenging hesitated wonderful agreement sharp 二、用单词的适当形式填空 6. The _____（count）of the students in our class is 45. 7. The dove __________（symbol）peace in most countries. 8. She is our ______________（represent）in the meeting. 9. Please give me the _____（exact）time of the meeting. 10. The _______（currently）situation is getting better. count symbolizes representative exact current 三、选词填空 budget, sharply, system, per cent, promise (请从方框中选择合适单词填入空格，每词限用一次) 1. Our family has made a tight ______ for this year's travel. 2. The number of online shoppers has increased _______ in the past year. 3. The new computer ______ makes our work much easier. 4. About 30 ________ of the students in our class like playing basketball. 5. I _______ to finish reading this book within a week. budget sharply system per cent promise See You! $