【单元语法培优】Unit 4 Then and now 核心语法之一般过去时-2025-2026学年六年级英语下册核心考点精讲精练人教版（PEP） (含答案解析)

/ 让学习更有效 新课备课备考 | 英语学科 2025-2026学年人教版（PEP）六年级英语下册精讲精练 Unit 4 Then and now 核心语法：一般过去时 一、核心认知 定义：描述在过去某个特定时间发生并已结束的动作或存在的状态。 核心思维：看时间，定动词。 看到表示过去的时间词，动词就要变为“过去式”。 二、关键时间信号词 看到这些词，立刻想到用一般过去时： 类别 关键词 示例 昨天系列 yesterday yesterday morning/afternoon 上个系列 last last night, week, month, year, Monday ...以前 ...ago two days ago, five years ago, a moment ago 过去时间点 in + 过去年份 just now in 2010, just now (刚才) 情景暗示 then (那时) before (以前) I was a student then. 三、动词过去式变化规则（重中之重） A. 规则变化（动词+ed） 记住四句口诀： 一般词尾直接加 (play → played) 哑e结尾只加d (like → liked) 辅音加y，y变i再加ed (study → studied) 重读闭音辅，双写再加ed (stop → stopped) 【特记】常双写的“大胖瘦热”：big, fat, thin, hot → bigger, fatter, thinner, hotter (比较级/过去式原理相同) B. 不规则变化（必须掌握的“密码”） 以下是六年级必须滚瓜烂熟的 “超级高频词”： 原形 过去式 记忆提示 原形 过去式 am/is was be动词变体 do did are were be动词变体 go went have/has had 统一变had see saw read read (/red/) 形同音不同 take took eat ate buy bought get got say said 建议：将这些不规则动词做成卡片，每天记忆5个。 四、句型结构（三步变形法） 记住一个公式： 主语 + 动词过去式 + 其他。 这是肯定句的核心。 1. 肯定句 I watched TV last night. She was a teacher. They went to the park. 2. 否定句 规则：在动词前加 did not (didn’t)，并把动词打回原形！ I didn’t watch TV last night. ( watch用原形！) She was not (wasn’t) a teacher. They didn’t go to the park. ( go用原形！) 3. 疑问句 规则：句首加 Did，并把动词打回原形！ Did you watch TV last night ( watch用原形！) Was she a teacher Did they go to the park ( go用原形！) 回答：Yes, I did. / No, I didn’t. 4. 特殊疑问句（问具体信息） 结构：疑问词 + did + 主语 + 动词原形？ What did you do (你做了什么？) Where did you go (你去了哪里？) How was your trip (你的旅行怎么样？) （这里问状态，用was） 五、实战应用情景 情景：谈论上周末 (Talking about last weekend) A: How was your weekend (你周末过得怎么样？) B: It was great/Boring. (很好/很无聊。) A: What did you do (你做了什么？) B: On Saturday, I did my homework and cleaned my room. On Sunday, I visited my grandparents and watched a film. (周六...周日...) A: Did you like the film (你喜欢那部电影吗？) B: Yes, I did. It was funny. / No, I didn’t. It was too long. (喜欢/不喜欢...) 六、高频易错点警报 【最常见错误】“双重过去式” He didn’t went there. He didn’t go there. (didn’t 是“后悔药”，吃了它，动词必须变回原形！) 【规则混淆】不规则动词记错 I goed to school. He eated an apple. I went to school. He ate an apple. 【be动词被忽略】 I happy yesterday. (缺少动词！) I was happy yesterday. 黄金法则总结： 见过去时间词，动词变过去式。 见did/didn’t，动词现原形。 Be动词 (am/is/are) 变 was/were，独立成句勿忘记。 1．The rivers ____clean before, but now they _____dirty. A．was, is B．are, were C．were, are 2． Miss Li likes ____. She ____ a new dres ... ...