Unit 6 Grammar（课件）英语北师大版2024八年级上册

该初中英语课件聚焦现在完成时，通过“完成作业（过去影响）”“居住广州5年（持续状态）”等情境例句导入，连接过去动作与现在的关联，为理解定义（过去对现在影响/持续状态）和结构（have/has+过去分词）搭建学习支架。 其亮点在于结构化呈现知识，定义分两种情况配时间轴解析，结构细化肯定/否定/疑问及回答，标志词（for/since/already/yet）分类举例，过去分词规则表格归纳（规则/不规则变化），培养学生语言能力和思维品质。分层作业（整理动词、造句、采访家人）提升学习能力，学生可系统掌握语法，教师能高效开展教学。

（北师大版）八年级 上 Unit 6 Celebrations Grammar (Present Perfect Tense) Lead in 01 Definition 02 Structure 03 04 05 06 07 08 Adverbs of time Past Participle Change Rules Assessment Homework Exercise Contents 能准确说出现在完成时的定义：理解其表示 “过去动作对现在的影响 / 结果” 或 “过去开始持续到现在的状态”。​ 通过梳理过去分词变化规律、总结时态用法，养成归纳整理知识的学习习惯，提升自主学习能力。 能熟练掌握现在完成时的结构,能识别并运用现在完成时的常见标志词,能掌握过去分词的变化规则。 Lead in 01 She has finished homework. 现在不用做了 （过去影响） He has lived in Guangzhou for 5 years . 2019-2024（ 持续状态） Definition 02 Definition I have watched it twice. 现在完成时定义 我已经看过2遍。（结果） 定义1：表示___________或___________动作对_______造成的影响或结果。 过去发生的 已经完成的 现在 How long have you been here ? I have been here for 3 years. 定义2：表示____________动作或状态，持续到______，并还有可能持续下去 过去发生的 现在 现在完成时定义 Definition Structure 03 Structure 现在完成时结构 肯定句 主语 + have/has + 过去分词（Past Participle） 否定句 主语 + haven't/hasn't + 过去分词 疑问句 Have/Has + 主语 + 过去分词 Structure 现在完成时结构 We have visited the zoo twice this year. 今年我们已经参观过动物园两次了 She hasn't finished her drawing. 还没有完成她的绘画作品。 Have you finished this report? 你完成这份报告了吗？ 肯定句 否定句 一般疑问句 Structure 现在完成时一般疑问句的构成 肯定回答：Yes, 主语 + have/has. Q: Have you finished your homework? A: Yes, I have. 否定回答：No, 主语 + haven't/hasn't. Q: Has she seen this movie? A: No, she hasn't. Adverbs of time 04 Adverbs of time 现在完成时标志词 for: (表示某段时间) for后面接的是时间段，表示某个动作或状态已经持续了一段时间。 They have studied English for 2 years. （从过去开始→现在仍在学英语） This factory has been open for 10 years. （工厂 10 年前开业→现在仍在运营） Adverbs of time already‌：用于肯定句中，表示某事已经发生或完成。yet‌：用于疑问句和否定句中，表示某事尚未发生或完成。 He has already eaten breakfast. （他已经吃过早饭了。） Has she found her wallet yet? （她已经找到钱包了吗？） already: 常用于肯定句中. yet: 常用于否定句,疑问句尾. Adverbs of time 1. since + 时间点 He has played the piano since childhood.（他从小就弹钢琴。） 2. since + 时间段 + ago They have owned this house since 10 years ago.（他们从 10 年前就拥有这套房子了。） 3. since + 从句（从句用一般过去时） I have loved painting since I was a little kid.（我从小孩子时期就喜欢绘画。） since: (自…以来) since+时间点 Past Participle Change Rules 05 Past Participle Change Rules 过去分词的变化规则 例词 规律总结 读音规则 walk—walked—walked talk—talked—talked 一般直接加 -ed ①清辅音后读 /t/，如 helped, laughed②浊辅音、元音后读 /d/，如 lived, stayed③/t/ 和 /d/ 后读 /ɪd/，如 needed, started live—lived—lived dance—danced—danced 以不发音的 e 结尾的加 -d worry—worried—worried hurry—hurried—hurried 以辅音字母加 y 结尾的变 y 为 i 再加 -ed plan—planned—planned shop—shopped—shopped mix—mixed—mixed 以一个元音字母加一个辅音字母（x 除外）结尾的重读闭音节双写结尾字母再加 -ed Past Participle Change Rules 过去分词的不规则变化 变化类型 动词原形 过去式 过去分词 A-B-C write wrote written A-B-C drink drank drunk A-B-C hide hid hid/hidden A-A-A cut cut cut A-B-B bring brought brought A-B-B learn learned/learnt learned/learnt A-B-C become became become A-B-C forget forgot forgotten Exercise 06 My parents ___________ (visit) the Great Wall twice. She __________ just __________ (finish) her homework. _______ you ever ________ (be) to Japan? I ________ never ________ (see) such a beautiful sunset before. They __________ (live) in this city ________ 2010. have visited has finished Have been have seen have lived since 用所给动词的适当形式填空 Excercise He has cleaned his room.（改为一般疑问句） _____________________________________________ I have had this book for two weeks.（对划线部分提问） _____________________________________________ She bought a new bike yesterday.（用 “already” 改写为现在完成时） _____________________________________________ Excercise 现在完成时（Present Perfect Tense） Has he cleaned his room? How long have you had this book? She has already bought a new bike. Assessment 07 Self-assessment I can acquire expressions related to team activities through watching and listening activities. I can share experiences of team activities in real - life contexts. I can understand and recognize the importance of collaborative cooperation in team activities. 08 Homework Basic (基础) 整理 10 个课堂重点的不规则动词（原形 + 过去分词） ，填写在表格中（示例已给出）。 为每个动词造 1 个现在完成时句子，需包含至少 1 个时间标志词（如 ever、since、for 等）。 Improving(提升) Extend (拓展) 用 3 个现在完成时疑问句采访家人（如父母、兄弟姐妹），记录他们的回答（用完整句子）。 $