人教版（2024）八年级下册（2024）Unit 8 Making a DifferenceSection A备课ppt课件

这是一份人教版（2024）八年级下册（2024）Unit 8 Making a DifferenceSection A备课ppt课件，共15页。PPT课件主要包含了Summary等内容，欢迎下载使用。
Learning Objectives(学习目标)
Knwledge Gals知识目标
• 掌握现在完成时的构成：have/has + 动词过去分词。• 理解并正确使用时间副词already和yet的区别。• 熟记本课时核心的高频不规则动词的过去分词形式。
Ability Gals能力目标
• 能够自信运用现在完成时谈论过去的经历以及对当下产生的影响。• 在具体的语境中，准确区分并使用现在完成时与一般过去时。• 独立完成教材 4a, 4b, 4c 的综合练习任务。
Emtinal Gals情感目标
• 积极参与课堂讨论，分享个人的阅读书单和感悟。• 通过交流不同的书籍内容，激发大家的阅读兴趣，并在潜移默化中培养文学素养和跨文化意识。
Warm-up & Review
Teacher’s Check-in
"Gd mrning, class! Lk at these bks. Have yu read any?"• "Have yu readTreasure Islandyet?"• "What d yu think f it?"
Tday's Fcus
Great! Tday, we will learn and practice the grammar structure we used earlier: thePresent Perfect Tense.
Treasure Island
Little Wmen
Grammar Fcus
Q:Have yu readLittle Wmenyet?A:Yes, Ihave./ N, Ihaven't.
Q:Has Tina readTreasure Islandyet?A:Yes, shehas. She thinks it's fantastic.
Q:Have yu decided which bk t write abut yet?A:Yes, Ihave. I'vealreadyfinished reading it. It was really gd.
Let's Find the Rules! (我们来找规律!)
Q: What wrds d we use with 'I/yu/we/they'?Answer: have
Q: What wrds d we use with 'he/she/it'?Answer: has
Q: What frm f the verb cmes after have/has?Answer: Past Participle
? Cnclusin: Present Perfect Tense Structure (现在完成时结构)
Psitive (+)Subject +have / has+Past Participle...
Negative (-)Subject +haven't / hasn't+Past Participle...
Questin (?)Have / Has+ Subject +Past
already vs. yet
alreadyMeaning:已经 (动作比预期更早发生)Usage:Usually inpsitive sentences (肯定句)Psitin:Betweenhave / hasand the past participle.Example:Ihave already finishedmy hmewrk.
yetMeaning:已经 / 还 (没) (暗示一种期待)Usage:Usually innegative sentences (否定句)andquestins (疑问句).Psitin:At theendf the sentence.Examples:• Ihaven't finishedmy hmewrkyet.•Haveyu finished yur hmewrkyet?
Present Perfect Tense - Usage 1
CORE CONCEPTIt describes an actin that happened r was cmpleted in thepast, but has a directresult r impactn thepresentmment.
PAST────── (Actin happened) ──────>NOW(Result felt)
"Ihave lstmy key."Result: I can't get int the huse right nw.
"Shehas seenthe mvie."Result: She knws the stry and desn't want t watch it again.
"Wehave finishedur prject."Result: We are dne with wrk and can relax nw.
Present Perfect Tense - Usage 2
Cre Cncept: Actin cntinuing int the presentAn actin r state that began at a specific pint in thepastand cntinues t thepresent(and may cntinue int the future). It is frequently used withfr(perid f time) andsince(specific time pint).
PAST (Start)A specific pint
Actin / State in Prgress
NOWStill true tday
Example 1:"Hehas livedherefrten years."•fr + [perid f time]• He started living here 10 years ag and still lives here.
Example 2:"Ihave knwnhersince2010."•since + [specific time pint]• The friendship began in 2010 and cntinues nw.
Example 3:"Theyhave beenmarriedsincethey graduated."•since + [past clause]• Marriage started at graduatin and cntinues.
Present Perfect vs. Simple Past
Present Perfect (现在完成时)
⏱️ 时间：不明确指出过去的具体时间。? 关系：强调动作对现在的影响或结果。?️ 例句："I have lst my key."(暗示：现在没钥匙，进不去门)
Simple Past (一般过去时)
⏱️ 时间：明确指出过去的具体时间点。❌ 关系：仅陈述过去的事实，与现在无关。?️ 例句："I lst my key yesterday."(仅陈述过去发生的事)
Timeline Insight
The timeline visualizes the cnnectin (r lack theref) t the "NOW" mment.•Present Perfect:Bridge between past actin and present result.•Simple Past:A clsed, finished event in the past.
Key Wrds: Past Participles
Regular Verbs (规则变化)
• finish → finished• live → lived• decide → decided? Rule: Just add "-ed" t the base frm.
Irregular Verbs (高频不规则变化)
be → was/were →beenread → read →readsee → saw →seeng → went →gned → did →dne
eat → ate →eatenfind → fund →fundleave → left →lefttell → tld →tldwrite → wrte →written
Practice 4a: Cmplete the cnversatins.
? Task:Use the wrds in brackets t cmplete the cnversatins.
1.A: Wuld yu like smething t drink?B: N, thanks.I've just drunk sme tea.(just / drink sme tea)
2.A: I heard yu lst yur key.Have yu fund it yet?(find)B: N, nt yet.
3.A: D yu knw when Tm is leaving?B:He has already left.(already / leave)A: Whendid he leave? B: This mrning.
4.A: Is yur sister ging t the mvies with us tnight?B: N.She has already seen the film.(already / see the film)
5.A: What d yur parents think abut ur plan?B: Ihaven't tld them yet.(nt / tell them / yet)
Practice 4b: Fill in the blanks.
Task:Fill in the blanks with the crrect frms f the wrds in brackets.
Sallylves(lve) reading. In the mrning, she reads the newspaper and in the evening she reads bks. Shehas already read(already/ read) mre than 100 different bks!Her favrite kind f bks is science fictin. She is interested in science and technlgy and lves t imagine what the wrldwill be(be) like in 50 years.
Shefinished(finish) reading a bk abut rbts last week andwill write(write) a bk reprt abut it next week fr her French class.Every time she is in the library, Sally lks at the many bks shehasn't read(nt read) yet and she can't wait t read them!
Practice 4c: Survey yur classmates.
? Cnversatin MdelA:What bkshave yu already read?B:Ihave already readTm SawyerandHarry Ptter.A:What d yu think f them?B:Well, I thinkHarry Ptterwas exciting, butTm Sawyerwas a bit bring.
? Activity:Wrk in pairs. Interview yur partner and cmplete the chart belw t share yur reading, watching, and listening experiences.
Tm SawyerMark Twain
Harry PtterJ.K. Rwling
What's yur favrite bk f all time?*
Basic Structure
核心公式：have / has + past participle
强调过去发生的动作对现在造成的结果或影响，不强调动作发生的具体时间。
表示动作从过去开始，持续进行并一直延续到现在，甚至可能继续。常搭配:fr / since
Signal Wrds
•already：用于肯定句，表示“已经”。•yet：用于否定句/疑问句，表示“还未 / 已经”。
VS Simple Past Tense
现在完成时：强调过去与现在的联系，不能与明确的过去时间状语（如 yesterday, in 2010）连用。一般过去时：只强调过去发生的动作本身。