Unit 5 Now and Then 复习讲义

Unit 5 Now and Then 复习讲义 一、单元主题与词汇精讲 主题解读：本单元围绕“现在与过去”展开，对比描述生活、科技及环境的变化，涵盖时间表达、过去习惯与现在状态的差异等话题。 核心词汇分类 时间对比类生活变化类科技与环境类 past (n./adj.) 过去 change (v./n.) 改变 technology (n.) 科技 present (n./adj.) 现在 tradition (n.) 传统 environment (n.) 环境 future (n./adj.) 未来 modern (adj.) 现代的 pollution (n.) 污染 例题1： Q: In the _____, people wrote letters, but now we use emails. A. future B. past C. present 解析：选B。根据“过去写信，现在发邮件”的对比，选past。 高频短语 used to do 过去常常做 in the past 在过去 compared to 与…相比 make progress 取得进步 protect the environment 保护环境 例题2： Q: My grandfather _____ (grow) vegetables when he was young. A. uses to grow B. used to grow C. used to grew 解析：选B。used to后接动词原形。 二、语法专项突破 1. 一般过去时（Simple Past Tense） 用法：表示过去发生的动作或状态，常与时间状语（yesterday, last year）连用。 结构： 规则动词：动词 + ed（played, watched） 不规则动词：go → went, see → saw 例句： She visited her grandparents last weekend. They built a new school in 2020. 例题3： Q: I _____ (watch) a movie with my friends yesterday. A. watch B. watched C. will watch 解析：选B。时间状语yesterday提示用一般过去时。 2. used to的用法 用法：表示过去的习惯或状态，强调现在已不再如此。 结构： 肯定句：主语 + used to + 动词原形 否定句：主语 + didn’t use to + 动词原形 疑问句：Did + 主语 + use to + 动词原形？ 例句： He used to play basketball every day. Did you use to live in Beijing 例题4： Q: My brother _____ (not like) vegetables, but now he eats them. A. didn’t use to like B. doesn’t use to like C. isn’t used to like 解析：选A。否定句中用didn’t use to + 动词原形。 3. 比较现在与过去（then and now） 结构： In the past, people rode bikes, but now they drive cars. Compared to the past, today’s life is more convenient. 例题5： Q: _____ the past, children spent more time outdoors. A. Compared to B. In C. For 解析：选B。In the past为固定短语，表示“在过去”。 三、句型与话题表达 1. 描述过去习惯 People used to cook with fire, but now they use gas. Did your parents use to walk to school 2. 对比变化 The environment was cleaner in the past than it is now. Technology has made our lives easier. 例题6： Q: —_____ did people communicate in the past —They sent letters. A. How B. What C. Why 解析：选A。How询问方式，对应“发送信件”。 四、题型解题技巧与例题 1. 完形填空：时间对比法 技巧： 根据时间关键词（in the past, now）判断动作的时态。 注意used to与一般过去时的搭配。 例题7： Q: My town _____ (have) a small park, but now there is a big shopping mall. A. used to have B. has C. had 解析：选A。used to have表示“过去有（现在无）”。 2. 阅读理解：对比分析题 技巧： 划题干中的对比词（如before/now, better/worse）。 定位文中过去与现在的具体变化描述。 例题8（根据短文）： Q: What is the main difference between past and present transportation A. People drive faster cars now. B. Bicycles were more popular in the past. C. Trains are slower ... ...