Unit2语法专项课件- when where 引导状语从句 2026-2027学年外研版九年级英语上册

该初中英语课件系统梳理九年级上册Unit2 when/where引导状语从句知识，通过定义解析、时态规则（when三时态搭配、where主从句统一）、对比表格及解题技巧，构建“基础概念-时态应用-易混区分”的知识网络，串联时间地点逻辑与语法结构的内在联系。 其特色在于采用“分层练习+易错诊断”策略，设计选词填空、动词变形等题型，结合when从句禁用will等易错点总结，培养学生语言理解与表达能力，提升逻辑分析思维品质，助力不同水平学生巩固语法，教师可精准把握复习重点，提高教学效率。

教学课件 外研英语九年级上册 Unit2 语法专项 —— when/where 引导状语从句 全解精讲+分层练习 1 1.掌握 when 时间状语从句、where 地点状语从句含义与结构 2.熟记 when 三大时态搭配：主祈从现、主将从现、主过从过 3.分清 where 地点状语从句与定语从句基础区别 4.简单区分 when 与 while 用法，理清使用边界 学习目标 when 引导时间状语从句・基础定义 when 翻译为 “当…… 的时候”，引导时间从句 可描述同时发生、先后发生的两类动作 句式 1：When + 从句，主句（句首从句，加逗号） When you get pocket money, make a saving plan. 句式 2：主句 + when + 从句（从句后置无逗号） when 时态搭配 1—— 主祈从现（给建议必考） 使用场景：提出储蓄、消费相关指令、建议 规则：when 从句用一般现在时，主句为祈使句 例句：When you receive money, save half of it. 否定祈使：Don’t buy useless things when you shop. when 时态搭配 2—— 主将从现（未来规划） 使用场景：描述未来存钱、理财计划 规则：when 从句一般现在时，主句 will + 动词原形 例句：When I grow up, I will open a bank account. 从句主语三单，动词加 s：When he turns 18… when 时态搭配 3—— 主过从过（过去经历） 使用场景：回忆小时候存钱、花钱往事 规则：主句、when 从句统一用一般过去时 例句：When she was 10, she saved all New Year money. 短暂动词、延续动词均可搭配 when 看到过去时间词，统一变换过去式 拓展区分 when vs while when：既能接短暂动词，也能接延续动词 短暂动词：get、receive、reach、begin 只用 when while：只能搭配延续性动作，常用于进行时 例句：When you get cash, write down your cost. where 引导地点状语从句・基础定义 where 意为 “在…… 的地方”，描述动作发生位置 句式 1：Where + 从句，主句（前置加逗号） Where prices are low, we buy school supplies. 句式 2：主句 + where + 从句（后置无逗号） 时态无特殊规则，主从句时态保持一致 where 句型 1 搭配祈使句（购物储蓄建议） 多用于给出消费、存放零花钱的建议 例句：Put your savings jar where you can see it. 拓展：Don’t spend money where goods are too expensive. 主句动词原形开头，从句常规时态 where 句型 2 一般现在时（日常常态） 描述日常购物、存钱固定场所 Teenagers buy cheap books where online shops are. 主从句均为一般现在时，时态同步 无 will、过去式，描述长期习惯 where 句型 3 一般过去时（过去场景） 回忆过去存放、消费的地点 He put coins back where he took them yesterday. 主句过去式，从句同步变换过去时态 易错点：地点从句无需加介词 in/at 重难点区分 where 状语从句 vs 定语从句 地点状语从句：where 前无地点名词 Put money where you won’t waste it. 定语从句：where 前有 shop/box/place 等先行词 This is the shop where I buy cheap pens. when&where 从句对比表格 引导词 从句类型 时态核心规则 使用场景 when 时间状语从句 主祈从现 / 主将从现 / 主过从过 拿到零花钱、成年、年末存钱 where 地点状语从句 主从句时态统一无特殊变化 存放储蓄罐、低价购物场所 解题技巧 1 选词填空判断逻辑 表动作发生时间，选用 when；句首首字母大写 表动作发生地点、存放位置，选用 where 时间关键词：begin、turn、year、holiday 地点关键词：put、shop、jar、place 先翻译句子，分清时间、地点关系 解题技巧 2 when 从句动词变形步骤 先看主句：祈使句→从句现；will→从句现；过去式→从句过去 从句主语三单，动词末尾加 s/es 否定结构：don’t/doesn’t + 动词原形 过去式统一变换动词过去式 易错点 1 when 主将从现乱用 will 错误：When you will get money, you will save it. 规则：when 时间从句不能使用将来时 will 改正：When you get money, you will save it. 口诀：when 从句永远现在时，主句将来带 will 易错点 2 where 前多加介词 in/at 错误：I put money in where I can see it. where 本身包含 in the place 含义，无需加介词 改正：I put money where I can see it. 只要是 where 引导地点从句，直接使用 易错点 3 时态不统一（过去场景） 错误：He put coins back where he takes them. 主句 yesterday 为过去式，从句同步用过去式 took 改正：He put coins back where he took them. 出现过去时间词，主从句全部变过去 易错点 4 savings 单词变形错误 错误：put my save jar on the desk 固定搭配：savings jar 储蓄罐，必须用复数 savings saving 单独使用表示 “节约”，不修饰罐子 题型一 when/where 选词填空 1.Leave your jar ________you can avoid impulse shopping. 2.________the Spring Festival comes, I save my lucky money. 3.Don’t buy toys ________the prices are too high. 4.I will make a saving plan ________the new term starts. 5.He put all his cash back ________he found it. where When where when where 6.________you finish your shopping, count your spending. 7.We buy notebooks ________the shop sells cheap stationery. 8.It’s hard to keep saving ________you just start your plan. 9.Store your money ________you won’t spend it easily. 10.________the year ends, calculate all your savings. When where When where When 题型二 动词适当形式填空 1.When you ________(receive) money, ________(set) aside 30%. 2.When summer ________(come), we ________(shop) online for cheap books. 3.He ________(begin) saving when he ________(be) nine years old. 4.________(write) down costs when you ________(pay) for things. receive set comes will shop began was Write pay 5.When kids ________(turn) 18, they ________(own) bank cards. 6.I ________(place) my jar on the desk where I ________(see) it daily. 7.When you ________(complete) the plan, you __________(feel) proud. 8.Where prices ________(stay) high, we __________(wait) for sales later. turn will own place see complete will feel stay will wait 题型三 单项选择题 1.Place your savings jar________you can notice it every day. A. when B. where C. what 2.—What will you do________you get lucky money? —I will save most in bank. A. where B. when C. if 3.When she________young, she________every coin she got. A. is; save B.will be; save C. was; saved 4.Let’s buy pens________the goods are cheap. A. where B. when C. that 5.________ you start saving, you will get a big sum soon. A. Where B. When C. Because B B C A B 题型三 单项选择题 6.Don’t waste cash________the goods are useless. A. when B. where C. how 7.When the holiday ________, we________buy cheap stationery. A. comes; will B. will come; will C. come; do 8.You can open an account________you are eighteen. A. where B. when C. so 9.I left my money box________I put my textbooks. A. when B. becauseC. where 10.We can buy cheap gifts________the shopping festival arrives. A. where B. when C. whose A A B C B 题型四 句型合并改写 1.You turn 18. You can open your own bank card.（when 从句前置） 2.The prices are low in this shop. We buy notebooks here.（where 合并） 3.The jar is ready. Put all coins into it.（when 主祈从现） 4.You can see your savings clearly here. Put your jar here.（where 合并） When you turn 18, you can open your own bank card. We buy notebooks where the prices are low in this shop. When the jar is ready, put all coins into it. Put your jar where you can see your savings clearly. 题型五 句子改错 1.When you will get lucky money, save most of it. 2.I put my save jar in where I can see it every day. 3.When he was little, he put coins back where he takes them. 4.We buy pens in where the prices are much lower. will get → get（when 从句不用将来时） save → savings；删掉 in（where 前不加介词） takes → took（主过从过统一过去式） 删掉 in（where 自带地点含义，无需介词） 单元核心知识点复盘 1.when 时间从句三时态：主祈从现、主将从现、主过从过 2.where 地点从句表存放、购物场所，无时态特殊规则 3.where 前无地点名词为状语从句，不加 in/at 4.when 可接短暂动词，while 只接延续动作 易混易错点总结 1.when 从句禁止出现 will，主将从现牢记在心 2.where 本身包含地点含义，前面不能加介词 3.过去场景主从句统一变换一般过去时 4.savings 表储蓄，不可写作 save 修饰名词 5.时间逻辑用 when，地点存放、购物场景用 where 教学课件 Unit2 语法专项 —— when/where 引导状语从句 Thank you for listening! 30 $