Unit3语法专项课件- 时间状语从句课件 2026-2027学年译林版九年级英语上册

该初中英语课件聚焦时间状语从句，系统梳理when/while/before/after等9类连词的含义、动词要求及时态规则，涵盖not…until否定考点与从句标点使用。通过总表导入建立基础认知，再分模块递进讲解易混点（如when/while动词及时态差异）、专项规则（since现完配一过、as soon as主将从现），构建阶梯式学习支架。 其亮点在于融合分层练习（填空、单选、句型转换）与高频易错点剖析（如while搭配短暂动词错误），结合记忆口诀（“短暂动作用when，持续进行while”）强化理解。通过对比分析（when/while动词类型及时态）培养思维品质，借助解题技巧（先看动词类型再选词）提升学习能力，助力学生精准掌握语法，教师可高效开展专项教学。

教学课件 译林英语九年级上册 Unit3 语法专项 —— 时间状语从句 全解精讲+分层练习 1 1.掌握 9 类时间连词：when/while/before/after/since 等 2.分清 when 与 while 动词搭配、时态区别 3.牢记 since、as soon as 专属时态规则 4.掌握 not…until 核心否定考点 5.分清从句放句首 / 句中逗号使用规则 学习目标 模块一 when/while/before/after 总表 连词 含义 动词要求 典型时态 when 当… 时 短暂 / 延续动词均可 任意时态 while 在… 期间 仅延续动词，多用进行时 过去进行时 before 在… 之前 动作有先后 主句在前 after 在… 之后 动作有先后 从句在前 when 适用场景更广，while 只表同步持续动作 when 用法精讲 可搭配短暂动词、延续动词两种类型 动作可同步发生，也可一先一后 例句：When he faced trouble, he never gave up. 短暂动作常用 when，不能替换 while 可放句首（加逗号）或句中（无逗号） while 用法精讲 从句动词必须是延续性，常配过去进行时 强调两个动作同步持续进行 例句：While he was training, he hurt his leg. 不能搭配 happen/arrive 等瞬间动词 看到 was/were doing 优先选 while when vs while 易混对比 瞬间动作发生，背景持续：When the accident happened, he was running. 两段持续动作同步：While they were talking, they shared dreams. 口诀：短暂动作用 when，持续进行用 while 二者不可随意互换，填空高频陷阱 时态是区分二者关键依据 before & after 先后连词 before：主句动作发生在从句之前 after：主句动作发生在从句之后 例句 1：He prepared hard before the match. 例句 2：After he recovered, he returned to training. 仅表达动作先后，无时态强制限制 从句标点使用规则 1.连词放句首，从句结束必须加逗号 Before he competed, he practiced daily. 2.连词放句中，主句在前，无需逗号 He practiced daily before he competed. 3.所有时间连词通用此标点规则 模块二 since 用法详解 1.含义：自从过去某时延续到现在 2.固定时态搭配：主句现在完成时，从句一般过去时 3.例句：Since he was ten, he has loved sports. 4.不可用于将来时、一般过去时主句 5.看见 has/have done 优先考虑 since till & until 基础用法 含义直到… 为止，until 正式，till 口语化，可互换 肯定句：主句延续动词，动作持续到从句时间 例句：He will train till he wins the prize. 时态前后保持一致，无特殊变形要求 二者无词义差别，考试均可得分 核心考点 not…until 直到… 才 否定固定搭配，中考重中之重 主句否定，动作在从句时间才发生 例句：He didn’t understand until the teacher told him. 不能去掉 not 单独表达该含义 模块三 as soon as 一… 就… 表示两个动作紧随发生，无间隔 专属时态规则：主将从现 主句将来时，从句只用一般现在时 例句：I will call you as soon as the game ends. 即使从句主语变化，时态规则不变 whenever 每当 / 无论何时 表每次、任何时候，泛指重复动作 时态无强制限制，跟随主句变化 例句：Whenever he meets difficulty, he stays strong. 区别 as soon as：后者侧重单次即时动作 可放句首加逗号，句中不加 九大连词时态总结 when/while/before/after/till：时态灵活，看语境 since：主句现完，从句一般过去 as soon as：主将从现 whenever：时态与主句保持统一 not…until：时态前后匹配，主句可否定 解题技巧一 when/while 判断 1.从句动词短暂→when；延续进行→while 2.出现 was/were doing 直接选 while 3.happen/leave/arrive 等瞬间词只用 when 4.先看动词类型再选词，减少失误 解题技巧二 since/until 区分 1.主句有 have/has done→选 since 2.句中有 not，表 “直到才”→until/till 3.单纯持续到某时间无否定→until/till 4.看见时间段起点优先用 since 解题技巧三 as soon as/whenever 1.一发生立刻做某事→as soon as，主将从现 2.每次、无论何时重复动作→whenever 3.转换句型注意从句时态不变形 4.合并句子重点把控时态规则 高频易错点 1 while 搭配短暂动词 错误：While the accident happened, he ran. 改正：When the accident happened, he ran. while 只能搭配持续动作，瞬间动词禁用 改错最常见错误类型 做题先区分动词短暂 / 延续 高频易错点 2 since 时态混用 错误：Since he is young, he practices every day. 改正：Since he was young, he has practiced every day. since 从句必须一般过去，主句现完 时态颠倒直接判定错误 高频易错点 3 as soon as 时态错误 错误：I will tell you as soon as the match will end. 改正：I will tell you as soon as the match ends. 主将从现，从句不能使用将来时 题型一 when/while/before/after 填空 1.________ she was running, she fell down. 2.He studied hard ________ he took the competition. 3.I cried ________ I watched his winning speech. 4.He rested ________ he finished all training. While before when after 题型一 5.________ they were talking about dreams, they smiled. 6.He never gave up ________ he failed many times. 7.________ the bell rang, we were reading books. 8.He became a coach ________ he hurt his legs. While When When after 题型二 since/till/until 填空 1.He has loved sports ________ he was nine. 2.I will wait ________ you finish your practice. 3.We won’t know the truth ________ the coach tells us. 4.________ she read the story, she has kept brave. since till/until until/till Since 题型二 5.Stay here ________ your parents come to pick you up. 6.They won’t stop training ________ they win medals. 7.I didn’t know his story ________ I met him. 8.This has been his goal ________ he joined the team. until/till until/till until/till since 题型三 as soon as/whenever 填空 + 合并 1.____________ I meet trouble, I think of hard-working athletes. 2.I will share the news ____________ the match finishes. 3.I finish homework. I go to exercise. (as soon as) 4.He faces difficulties. He holds on. (whenever) Whenever as soon as I will go to exercise as soon as I finish homework. Whenever he faces difficulties, he holds on. 题型四 单项选择 1.He has kept running ________ he was 11.A. when B. since C. until 2.________ we were training, the coach came. A. While B. Before C. As soon as 3.I won’t stop trying ________ I succeed.A. since B. until C. while 4.I’ll send you a message ________ I arrive. A. whenever B. as soon as C. while B A B B 5.________ you feel tired, take a short break. A. Whenever B. As soon as C. Before 6.He trained hard ________ he joined the national team. A. after B. before C. since 7.They didn’t realize the difficulty ________ they started. A. till B. since C. while 8.________ the game ends, we will ask the player advice. A. Whenever B. While C. As soon as A B A C 单元核心知识点复盘 1.when 长短动词通用，while 仅延续进行动作 2.since 现完配一过；as soon as 遵循主将从现 3.not…until 固定含义 “直到… 才”，必考否定结构 4.从句句首加逗号，句中连词无标点 5.before/after 只区分动作先后，无时态限制 易混点记忆口诀 短暂动作用 when，持续进行 while； 现完主句用 since，一就主将从现； not 加 until 直到才，句首从句加逗号； whenever 表每一次，先后 before 和 after。 教学课件 Unit3 语法专项 —— 时间状语从句 Thank you for listening! 30 $