Unit 1 第3课时 Understanding idea（Grammar）课件2025-2026学年外研版英语八年级上册

该初中英语课件围绕“现在完成时”这一核心语法点展开，从生活情境导入（如身高变化、发型改变），通过阅读语篇提炼结构特征，再结合定义分类、标志词归纳与句型操练，层层递进构建知识支架，帮助学生理解动作的延续性、影响性和重复性，实现从感知到运用的自然过渡。 其亮点在于融合语言能力、思维品质与学习能力三大核心素养，以真实语境驱动语法学习，例如在改写句子环节引导学生发现“过去—现在”的逻辑关联，培养批判性思维；在小组讨论中鼓励表达自我接纳的经历，提升文化意识与情感共鸣。教学设计注重学法指导，如通过动词分词规则梳理和中考真题演练强化记忆策略，既助力学生掌握语法本质，又提升教师课堂效率与教学深度。

外研版 八年级上册 Unit 1 This is me Understanding idea (Grammar) Revision 1. 在拥挤的公交车和火车上，那感觉就像一场灾难。 On crowded buses and trains, it felt just like a disaster. 2. 因此，我一直留着长发，直到那天 Therefore, I always kept my hair long to cover it until that day. perfect 完成时的 row 一排，一行，一列 The height of the building is very high. 这座建筑物的高度很高。 height 身高；高，高度 Think and share (a) I haven't told Maddie yet. . . (b) I have already learnt that I am what I am. Now find one more sentence with these structures in the reading passage. Read the sentences from the reading passage and summarise the grammar rules. 现在完成时 have/has+done Think and share 定义-1 定义1：从过去开始并延续到现在，可能还将延续下去 要点：过去开始+延续到现在 eg: a) Lily has studied in No. 1 Middle School since two years ago. b) They have lived in Changzhou for ten years. 该定义强调在“现在”这个时间点，动作是存在的。 动词在now这个点是存在的，可能到此结束，也可能继续下去 注意：若在now这个点动作不存在，则是一般过去时。 B A now Think and share 定义2：动作发生在过去并已结束，但对现在有影响或与某种联系。 要点：过去发生+对现在有影响/联系 eg：a) Who has cleaned the room. It’s clean and tidy. b) I won’t see the film with you. I have seen it. 该定义强调过去动作对现在的影响或联系；若不存在影响或联系，则是一般过去时。 定义-2 Think and share 定义3：在过去一段时间内，动作发生了多次。（包括零次never） 要点：次数 a) We have been to the UK three times. 我们去过英国三次。 b) How many times has Peter visited the Shanghai Museum over the past years? 过去这些年，彼得去过多少次上海博物馆？ 定义-3 Think and share 现在完成时的构成 现在完成时谓语由“助动词have/has+动词的过去分词”构成。 1. 肯定式 结构：主语+have/has + 动词的过去分词(+其他). ▶I/You have worked. 我/你工作了。 ▶He/She/It has worked. 他/她工作了。/它奏效了。 ▶We/You/They have worked. 我们/你们/他们工作了。 Think and share 现在完成时的构成 2. 否定式 结构：主语+have/has+not+动词的过去分词(+其他). ▶ I /You have not worked. 我/你还没有工作。 ▶ He/She/It has not worked. 他/她还没有工作。 ▶ We/You/They have not worked. 我们/你们/他们还没有工作。 Think and share 现在完成时的构成 3. 疑问式 结构：Have/Has +主语+动词的过去分词(+其他)? ▶ Have I/you worked? 我/你工作了吗? ▶Has he/she/it worked? 他/她工作了吗?/它奏效了吗? ▶Have we/you/they worked? 我们/你们/他们工作了吗? Think and share 现在完成时的构成 4. 简略回答 结构：肯定回答:Yes，主语 + have/has. 否定回答:No，主语 + haven't/hasn't. ▶Have we/you/they worked? 我们/你们/他们工作了吗? 肯定:Yes, you/we/they have. 是的,你们/我们/他们工作了。 否定: No, you/we/they haven't. 不，你们/我们/他们没有。 Think and share 动词的过去分词的构成原则 1. 规则动词的变化规则 （1）大部分动词在词尾直接加 -ed clean→cleaned 打扫 help → helped 帮助 play→ played 玩耍 （2）动词以不发音的字母e结尾时，直接加 -d like → liked 喜欢 live →lived 居住 love → loved 喜爱 （3）动词以“辅音字母+y”结尾时,变y为i再加 -ed try→ tried 尝试 study→studied 学习 marry→married 结婚 （4）动词为重读闭音节且词尾只有一个辅音字母时,须双写这个辅音字母再加-ed plan→planned 计划 stop→stopped 停止 prefer→preferred 更喜欢 2. 不规则动词的变化规则 A-A-A cut-cut-cut 类似的还有put,hit, hurt,cost,read,beat A-A-B beat-beat-beaten A-B-A come-came-come become-became-become run-ran-run A-B-B burn-burnt-burnt build-built-built bring-brought-brought dig-dug-dug feel-felt-felt lay-laid-laid make-made-made A-B-C blow-blew-blown break-broke-broken see-saw-seen begin-began-begun am/is/are-was/were-been do-did-done 现在完成时 标志词1 yet ever never already “还没”，用于疑问句和否定句，一般放句末。 “曾经”，用于疑问句和否定句，一般放句中。 “从不”，用于否定句，一般放句中。 “已经”，用于肯定句，放句中和句末都可。 强调动作完成, 不强调动作的持续。 现在完成时 标志词2 表示自从. . . . . . since 表示动作持续了多长时间 for 表示次数的短语 once 一次 twice 两次 three times 三次 several times 几次 表示过去时间的副词 before 以前 just 刚刚 so far/up to now/till now 到目前为止 in the past/last few years 在过去的几年里 Think and share ▶Have you ever been to Japan? 你曾经去过日本吗? ▶ I have just finished my homework. 我刚刚完成我的家庭作业。 ▶They have known each other for five years. 他们相识5年了。 ▶I haven't played soccer since I left school. 自从离开学校后我就没踢过足球。 1. I/ just / cut my long hair . 2. She / never / worry about / her looks . 3. I/just / paint a beautiful flower / on my face . 4. Chris / always / wear / a pair of glasses . 5. Jessica / already/ change her opinion /on her looks . Write sentences with the present perfect tense. I have just cut my long hair. She haven’t never worried about her looks . I have just painted a beautiful flower on my face. Chirs has always worn a pair of glasses. Jessica has already changed her opinion on her looks. I was the tallest student in my class. Now, I'm still the tallest. I sat on the last row in primary school. Now at junior high, I'm still sitting on the last row. People always look at me in surprise. "You must be good at basketball," my classmates at primary school always said that. Now at junior high, my classmates say the same. In fact, I'm not good at basketball at all. But being tall is not always bad. lt makes me easy to recognise, and I can help others reach things down. I couldn't accept my height, but I learn to do it now. I'm proud of myself. Rewrite the underlined sentences using the present perfect tense.用现在完成时改写划线句子。 1.I was the tallest student in my class. Now, I'm still the tallest. 2.I sat on the last row in primary school. Now at junior high, I'm still sitting on the last row. Rewrite the underlined sentences using the present perfect tense. 用现在完成时改写划线句子。 I have always been the tallest student in my class. And I have always sat on the last row at school. 3."You must be good at basketball," my classmates at primary school always said that. Now at junior high, my classmates say the same. 4.I couldn't accept my height, but I learn to do it now. Rewrite the underlined sentences using the present perfect tense. Over time, I have learnt to accept my height. “You must be good at basketball,” my classmates have always said. Work in pairs. Discuss the experience of accepting your looks. Use the words and expressions from the reading passage and the Useful expressions to help you. Useful expressions: ·I was not happy with my. . . ·. . . is a good way to. . . ·What do you think of . . . now? ·For example, … ·I have already. . . ·Why not. . . ? 1. You must be good at basketball. 你篮球一定打得很好。 Language points be good at 意为“擅长于”，表示在某方面有能力或有技巧。at 是介词。 用法：be good at + n. (例：She is good at math. / He is good at it.) be good at + v-ing(例：They are good at playing basketball.) 注意： 反义词是 be bad/poor at (不擅长)。 at 后面必须接名词类成分（名词、代词或动名词）。 2. I'm proud of myself. 我为自己感到骄傲。 be proud of意为“为……感到自豪/骄傲”，表示因为某人（包括自己）的成就、品质或某事物而感到满足和自豪。of是介词。 用法：be proud of + n. (Her parents are proud of her success. ) be proud of + v-ing (He is proud of winning the competition.) be proud of + sb. + for + v-ing (We are proud of you for trying your best.) 注意： 表达“为做某事而自豪”时，of后面必须接名词类成分（名词、代词或动名词），不能接不定式。 一、单词拼写，每空限一词。 1. Students in England don’t sit in ______(一排). 2. That book is too high. I can’t ______(伸手够到) it. 3. This house is 3 meters in _____ (高度) and 6 meters in length. rows Exercises reach height 二、根据汉语提示，完成句子。 1. 我弟弟很擅长踢足球。 My brother __ very _____ ___ playing football. 2. 我们为祖国的快速发展感到自豪。 We ___ _____ __ the rapid development of our motherland. is good at are proud of 1. finish 2. cook 3. study 4. cut 5. hurt 6. build 7. stop 8. like 9. do 10. am 11. blow 12. burn 13. feel 14. break 15. see finished cooked studied cut hurt built stopped liked done been blown burnt felt broken seen 三、写出下列动词的过去分词 四、选词填空 already yet ever never 1. Have you heard of the news of Judy ____? 2. Have you ____ heard of a rabbit police? 3. Judy has ______ solved(解决) a big case! 4. At the emergency(紧急关头),Judy has _____ scared(害怕) of those bad guys(坏人). yet ever never already 1. She __________ the house orange. (paint) 2. Mum ________ the shopping. (do) 3. I _________ the clothes. (tidy) 4. He __________ to his colleagues. (speak) 5. They __________ eggs and toast for their breakfast. (make) has painted 五、阅读并填空，然后和图片配对。 has done have tidied has spoken have made 1 2 3 4 5 现在完成时结构： have/has +done 六、单项选择 1. —Have you ________learned English? —Yes,I’ve _______ learned a lot since primary school. A. never,ever B. ever,already C. ever,never D. already,ever 2. The man _____ himself to the hot search list several times because of photos with famous singers. A. makes B. is making C. will make D. has made B D 3. You ___me waiting for you since five o’clock. Why not come back early? A. has kept B. kept C. keeping D. have kept 4. The water_____ dark and dirty in some parts of our country. It’s no longer safe to drink. A. became B. has become C. will become. D. has became 5. ____ he ever ______the film before? A. Does; see B. Have; seen C. Did; see D. Has; seen D B D Most of us __________ (see) Mickey Mouse, Donald Duck and other famous Disney characters in cartoons before. But have you ever _____ (be) to Disneyland? Disneyland ___ (be) an amusement park with a special theme—Disney characters and movies. There ____ (be) many exciting rides, lovely restaurants and fantastic gift shops there. have seen been is are 七、请用动词的适当形式填空。 现在完成时标志词 单数，用is 复数，用are 1. Recently, more and more people have ________ to visit Yangzhou during holidays. (choose)（2025·江苏扬州中考） 2. The Shenzhou-18 astronauts ______________(work) in Tiangong space station since late April. （2024·江苏无锡） 3. Have you ever ________(try) Chinese food outside of China?（2024·甘肃白银） 4. Scientists are trying to find life on Mars but they _____________ anything yet. (not find) （2023·辽宁大连） have worked tried 中考链接 chosen haven’t found 5. I _____________(learn) English ever since I was in Grade 3. （2023·甘肃武威） 6. The film Ne Zha 2 is worth seeing. I ________ it three times so far. （2025·云南） A. have seen B. am going to see C. saw D. see 7. I ________ movies since I first went to the cinema. （2024·四川） A. love B. loved C. am loving D. have loved 8. —Mum, I ________ the living room already. —Good job! It is so tidy now. （2024·江苏淮安） A. have cleaned B. will clean C. am cleaning D. clean have learned Homework Finish the exercises in the workbook. $