Unit2语法专项 现在完成时（2）课件 2025-2026学年外研版八年级英语上册

教学课件 外研版八年级上册 Unit 2语法专项——现在完成时（2） 全解精讲+分层练习 1 学习目标 掌握have been to/have gone to/have been in的用法区分 精准运用for和since在现在完成时中的搭配规则 深度辨析现在完成时与一般过去时的核心差异 规避现在完成时的常见使用错误 综合运用语法知识完成各类题型解答 基本结构回顾·肯定句 结构：主语 + have/has + 过去分词 第三人称单数用has，其余人称用have She has been to Paris twice They have been in Beijing for a year 基本结构回顾·否定句 结构：主语 + haven’t/hasn’t + 过去分词 have/has后加not，可缩写为否定形式 He hasn’t gone to the library We haven’t been here since last month 基本结构回顾·疑问句 一般疑问：Have/Has + 主语 + 过去分词？ 特殊疑问：特殊疑问词 + 一般疑问句结构 一般疑问句用Yes/No直接作答 Has she gone to Shanghai? Where has he gone? 核心短语辨析·have been to 去过某地，现在已经返回 强调过往的出行经历，可与次数连用 主语适用于所有人称，无特殊限制 I have been to New York three times 核心短语辨析·have gone to 去了某地，现在尚未返回 主语不在说话现场，常回答where提问 不可与次数、时间段状语连用 My father has gone to Beijing 核心短语辨析·have been in 待在某地，持续一段具体时间 强调动作的持续状态，表长期停留 必须与表时间段的状语搭配使用 She has been in Tokyo for two years 三个核心短语对比 短语 含义 核心特征 have been to 去过某地 现已返回，表经历 have gone to 去了某地 尚未返回，人不在场 have been in 待在某地 持续停留，表状态 核心短语易混点 have been to不能与时间段连用 表达“在某地待多久”需替换为have been in 错误示例：He has been to Shanghai for a year 正确示例：He has been in Shanghai for a year for的用法详解 后接时间段，强调动作持续的具体时长 回答how long引导的特殊疑问句 常见搭配：for five months/for a long time They have lived in this town for ten years since的用法详解 后接时间点或一般过去时的从句 强调动作开始的时间，表动作起点 从句用一般过去时，主句用现在完成时 I have learned piano since I was 7 years old for与since 转换技巧 since + 时间点 可转换为 for + 对应时间段 转换需结合当前时间计算持续时长 since 2023 = for 3 years（以2026年为例） since last month = for a month for与since 易混点 since后只接时间点，不可接时间段 for后只接时间段，不可接时间点 避免出现since three years/for 2020的错误 牢记核心规则：点用since，段用for 时态辨析·核心逻辑 现在完成时：强调过去动作与现在的关联 一般过去时：仅强调过去发生的动作本身 现在完成时表动作的影响或持续状态 一般过去时表动作在过去已结束，与现在无关 时态辨析·时间状语（现在完成时） 常用：already、yet、just、ever、never 也可搭配：for、since、before 无明确的过去具体时间点 yet多用于否定句和疑问句末尾 时态辨析·时间状语（一般过去时） 常用：yesterday、last week、an hour ago 也可搭配：in 2019、just now 均为明确的过去具体时间点 出现此类状语直接用一般过去时 时态辨析·例句对比 现在完成时：She has closed the window 该句说明窗户现在保持关闭的状态 一般过去时：She closed the window an hour ago 该句仅说明过去的动作，不提及现在状态 拓展知识点·瞬间动词的转换 瞬间动词无法与for/since引导的时间段连用 常见瞬间动词：buy、come、go、leave、start 需转换为对应的持续动词使用 buy→have；leave→be away；come→be here 瞬间动词转换 例句 错误示例：I have bought this pen for two years 正确示例：I have had this pen for two years 错误示例：He has left for three days 正确示例：He has been away for three days 综合易混点梳理 表经历用been to，表去向用gone to，表持续用been in for接时间段，since接时间点或一般过去时从句 有过去具体时间用一般过去时，有现在关联用现在完成时 题型练习① 用所给短语适当形式填空 考查have been to/have gone to/have been in区分 1.— Where is Mike? — He ____________ the bookstore. He’ll be back soon. 2.My family ____________ Xi’an many times. We know it very well. 3.Linda ____________ Guangzhou since 2022. She works there now. 4.— Has your brother ___________ London? — Yes, he went there last year. 5.They ____________ this school for four years. They love their school. has gone to have been to has been in been to have been in 题型练习② 用for或since填空 1.I have studied English ______ I was 6 years old. 2.She has lived in this city ______ five years. 3.We have known each other ______ 2020. 4.The boy has played basketball ______ a long time. 5.My mother has worked here ______ last Monday. since for since for since 题型练习③ 单项选择 1.— Where is your brother? — He ______ to the park. He hasn’t come back. A. has been B. has gone C. went 2.They ______ in Beijing ______ 10 years. A. have been; for B. were; since C. have been; since 3.— Have you ever ______ to Hangzhou? — Yes, I ______ there last year. A. been; went B. gone; went C. been; have gone B A A 题型练习④ 句型转换 1.She has been to Paris twice.（改为一般疑问句） 2.They have lived here for 5 years.（对划线部分提问） 3.He has gone to the library.（改为否定句） 4.I have known her since 2019.（对划线部分提问） Has she been to Paris twice? How long have they lived here? He hasn’t gone to the library. How long have you known her? 题型练习⑤ 改错 1.I have gone to Beijing twice. 2.He has been to Shanghai for three years. 3.We have lived here since three years. 4.She has bought this book for a month. 5.I have known him for I was a child. gone→been been to→been in since→for bought→had for→since 语法知识·课堂小结 三个核心短语：区分经历、去向、持续状态 两个时间连词：for接段，since接点/过去从句 两个时态辨析：看动作是否与现在存在关联 一个重要规则：瞬间动词需转换后接时间段 教学课件 Unit 2语法专项——现在完成时（2） Thank you for listening! 28 $