初中英语人教版（2024）八年级下册（2024）Section A课文配套课件ppt

这是一份初中英语人教版（2024）八年级下册（2024）Section A课文配套课件ppt，共27页。PPT课件主要包含了Feifei，Guanguan，Beiye，Remember等内容，欢迎下载使用。
学习目标1.掌握现在完成时的构成.2.理解现在完成时的4种核心用法.3.区分现在完成时与一般过去时的关键差异.4.能正确运用现在完成时进行口语和书面表达.
I’ve _______ lts f shes.I’ve never _________a mammth sleep like that.I’ve always_________this carpet.I’ve never_______yu befre in my life.I’ve ________fr 14 years.I’ve __________yur name.I’ve _________in this city all my life.
have/has + 过去分词
What's the present perfect tense?
什么是现在完成时？现在完成时，顾名思义，是连接“过去”和“现在”的桥梁。它描述的动作发生在过去，但重点强调这个动作对现在造成的影响、结果，或是从过去持续到现在的状态。
①I have already read Jurney t the West, I knw there is a Mnkey King in it.
我已经看了《西游记》，我知道里面有个美猴王。
②I was a teacher 10 years ag. I have been a teacher fr 10 years .
10年前我是老师，我做老师10年了。（10年前做的老师，一直做到现在）
Find ut the rules
The structure f present perfect tense
主语 + have/has + 过去分词 + 其他。
I have finished my hmewrk.
Feifei has finished his hmewrk.
主语 + have/has + nt + 过去分词 + 其他。
I haven't finished my hmewrk.
Beiye hasn't finished his hmewrk.
Have/Has + 主语 + 过去分词 + 其他？
Have yu finished yur hmewrk?
Yes, I have./ N, I haven't.
Has Beiye finished his hmewrk?
Yes, he has. / N, he hasn't.
Main structure
1. Tm has already finished his hmewrk. (改为否定句) ________________________________________________2. They have cleaned the classrm.  (改为一般疑问句并作肯定回答) ._________________________________________________
Tm hasn't finished his hmewrk yet. 
—Have they cleaned the classrm? —Yes, they have.
The past participle f verbs
Teacher:黑色字体Students:红色字体
I say play, yu say playedplay, played ，play, playedI say like, yu say likedlike ，liked，like，liked I say study, yu say studiedstudy, studied，study ，studiedI say stp，yu say stpped stp，stpped，stp, stppedI say make，yu say mademake，made，make，made
用法1：过去动作对现在的影响/结果.这是最常见的用法，动作发生在过去，但我们关心的不是“什么时候做的”，而是“现在怎么样了”。A: Have yu chsen a bk fr yur reprt yet?你为报告选好书了吗？B: Yes, I've picked The Final Prblem.选好了，我选了《最后一案》。（隐含影响：我现在不用再选了，报告材料已经准备好了）A: Have yu ever read The Three-Bdy Prblem?你读过《三体》吗？B: N, I haven't.没有，我没读过。（隐含结果：我现在对这本书不了解）
用法2：动作/状态从过去持续到现在。表示某件事从过去某一刻开始，一直持续到现在，甚至可能继续下去。She's been a vlunteer since 2022.她从2022年起就一直是志愿者。Mary has lived with her uncle since her parents died.玛丽自从父母去世后就一直和叔叔住在一起。I haven't had a day ff fr three mnths.我已经三个月没休息过一天了。Hw lng has he wrked at the museum?他在博物馆工作多久了？小贴士：这类用法常和 since（自从…）、fr（持续…）、hw lng（多久）搭配，动词多为延续性动词（live, wrk, study, be等）。
用法3：与特殊时间副词befre,s far等连用already（已经，多用于肯定句）I have already brrwed the bk frm the library.我已经从图书馆借到这本书了。just（刚刚） I've just finished Alice's Adventures in Wnderland. 我刚读完《爱丽丝梦游仙境》。ever / never（曾经/从未，多用于疑问句或否定句）Have yu ever heard f Oliver Twist? 你听说过《雾都孤儿》吗？He has never seen snw befre. 他以前从没见过雪。yet（多用于否定句“还”和疑问句“已经”末尾）I haven't finished my hmewrk yet. 我还没写完作业。Have yu chsen a bk yet? M Yan has written many ppular bks s far.
用法4：have been t VS have gne thave/has been t + 地点：表示“曾经去过某地（现在已经回来了）”Helen has been t Xi'an nce. She wants t g there again.海伦去过西安一次，她想再去一次。（说明：她现在不在西安，只是去过）have/has gne t + 地点：表示“已经去了某地 （现在还没回来，不在说话现场）”Helen has gne t Xi'an. She'll be back in a week.海伦去西安了，她一周后回来。（说明：她现在不在这儿， 正在西安或去西安的路上）
小提醒：延续性vs非延续性动词在肯定句中，像 arrive, leave, cme, g, buy 这类非延续性动词（瞬间动作），不能和 fr tw hurs, since 2020 这类表示持续时间的词连用。✅ 正确：I haven't bught any fd since last week.我从上周起就没买过食物了。（否定句中可以用）❌ 错误：I have bught this bk fr three years.（bught是瞬间动作，不能持续三年）✅ 正确：I have had this bk fr three years.我拥有这本书已经三年了。（have是延续性动词）
现在完成时 vs 一般过去时很多同学容易搞混这两个时态，关键区别只有一个：是否和“现在”有关！时态核心区别：时间状语对比现在完成时强调过去动作对现在的影响/持续到现在，不能用具体过去时间（yesterday/last week等）Fu Xing has wrked at a nursing hme since last year.（她现在还在那里工作）一般过去时只描述过去发生的动作，和现在无关，可以用具体过去时间（yesterday/last week等）Fu Xing wrked at a nursing hme last year.（只说去年的事，她现在不一定在那里）I have watched the mvie befre. 我以前看过这部电影。（隐含：我现在知道剧情）I watched the mvie last week. 我上星期看了这部电影。（只说上星期的动作，和现在无关）
Wrk in grups
课堂小练习判断句子用现在完成时还是一般过去时：I ______ (lse) my pen. I can't find it anywhere.I ______ (lse) my pen yesterday.She ______ (live) here since she was five.She ______ (live) here in 2019.
用 have been t 或 have gne t 填空：— Where is Tm?— He ______ the library.I ______ Beijing twice. I knw the city well.My parents ______ the supermarket. They will be back sn.
根据汉语意思完成句子
1.我已经看过《西游记》了。我认为它是一本很棒的书。
3.我们已经听过《孤勇者》了，它是陈奕迅的歌。
2.Lucy看过《功夫熊猫》吗？
Lucy seen Kungfu Panda ？