Unit 1 Grammar learning课件2025-2026学年外研版英语八年级上册

该初中英语课件聚焦现在完成时，通过例句找类似句子及结构分析导入，从定义、语法结构、动词过去分词到与一般过去时的区别、持续性与非持续性动词转换，构建层层递进的学习支架。 其亮点在于结合实例对比（如一般过去时“I lost my key”与现在完成时“I have lost my key”）培养思维品质，通过“接受外貌”对话练习提升语言能力，提供动词表及转换方法（如lose→be without）助力学习能力。学生能掌握语法应用与表达，教师可高效实施教学。

I haven’t told Maddie yet... I have already learnt that I am what I am. Anyway, she has changed me. 从文中再找到一句类似的句子！ What's the structure ? 过去 现在 将来 1 现在完成时的定义 1) 表示动作在说话之前已经完成，且对现在有某种影响 eg.: I have done my homework . I have finished my dinner. 2) 表示某一动作或行为从过去一直持续到现在 eg.: I have lived in Hefei for twelve years. I have kept my dog for a year. “已经......” 2 现在完成时的结构 I He We have has have done broken eaten my homework. his glasses. the breakfast. 主语 + have / has + 动词过去分词 + 其他内容 更多不规则形式的动词过去分词，见书本附页！ 3 现在完成时与一般过去时的区别 一般过去时 描述的是过去发生的 一个事实 现在完成时 描述的是过去发生的 一个事实，状态是否持续到现在 eg.: I lost my key . eg.: I have lost my key . (But I find it now .) (I can’t find it now.) - Have you finished your project ? - No, I haven’t . But I did it last night. 一般过去时 时间提示词： yesterday one year ago last week in 2008 just now ... 现在完成时 时间提示词： so far (到目前为止) up to now (到目前为止) till now (至今) recently(最近) just (就、刚) since (自从) for (......多久了) 4 现在完成时动词的可持续性与非可持续性 She has studied English for five years. She has studied English since 2021. We have stayed in this class for one year. We have stayed in this class since we left primary school. for+ ________ since + _________ 时间段 时间点 She has had this pet cat ______ about ten years. She has had this pet cat ______ she was a baby. for since “拥有” 持续性动词/延续性动词 表示该动作可以持续 现在完成时的时间状语由for 引导时，句子中的动词需用 延续性动词！ I have lost my key. I have lost my key for two days . lost (lose ) 是瞬时性动词，表示动作瞬间发生，即刻结束，不能延续！ 常见的瞬时性动词： stop begin buy sell leave arrive die ... I have lost my key. I have lost my key for two days . 如何表达“钥匙已经丢了两天”这个意思呢？ lose be without I have been without my key for two days . die be dead Grandpa Yuan Longping has died for five years. Grandpa Yuan Longping has been dead for five years. 瞬时性动词： stop begin buy sell leave arrive die ... 瞬时性动词： be over be on have/keep be without be away be here be dead ... 如何表达“火车已经离开半小时了”这个意思呢？ The train has been away for half an hour. have been to “去过.....” have gone to “去了.....” have been in “已经待在......” I have been to Shanghai three times. But I want to go there again . Mr Green has gone to Beijing , he will come back next week . Our family have been in Hefei for over ten years. I have just cut my long hair. She has never worried about her looks. I have just painted a beatutiful flower on my face. Chris has always worn a pair of glasses. Jessica has already changed her opinion on her looks. have always been have always sat have always said have learnt/ learned What’s your experience of accepting your looks? I wasn’t happy with my... because it was.../ they were ... . I dreamt of ... . But now, I learn that ... I feel ... about ... Thanks to ... After ..., I have... My ... is\ are part of me. It\ they makes me special . I should ... Homework: Talk about your experience of accepting your looks with classmates. Share some books or movies about the topic. $