2025年春人教版八年級下冊英語 Unit 8 Section A（GF-4c）教案

Unit8HaveyoureadTreasureIslandyet?SectionA（GF-4c）TeachingAims1.語言能力：了解現(xiàn)在分詞的構(gòu)成，學(xué)習(xí)現(xiàn)在完成時的用法。2.文化意識：以名著為話題進(jìn)行問答或?qū)υ?，拓展學(xué)生知識面，培養(yǎng)文學(xué)素養(yǎng)。3.思維品質(zhì)：能發(fā)現(xiàn)同類型語篇的相似之處和不同類型語篇的結(jié)構(gòu)特征。4.學(xué)習(xí)能力：能制訂明確的英語學(xué)習(xí)目標(biāo)和計劃，合理安排學(xué)習(xí)任務(wù)，主動預(yù)習(xí)和復(fù)習(xí)。TeachingDifficulties熟練掌握already，yet在現(xiàn)在完成時中的用法。TeachingAidsmultimediacoursewareorotherrealiathattheTneedsforteachingTeachingProceduresTipsStep1WarmingupAsktheSstowatchavideoaboutpresentperfecttense!Step2Presentation&PracticeGrammarFocusAskSstoreadthesentencesinthebox.AsktheSsthefollowingquestions:1.Howisthepresentperfecttenseformed?2.Whatadverbsareoftenusedwiththepresentperfecttense?3.含現(xiàn)在完成時的句子如何構(gòu)成一般疑問句？Answers:1.have/has+過去分詞.2.Alreadyandyet.3.將助動詞have/has放在主語之前。Grammar現(xiàn)在完成時（一）一、現(xiàn)在完成時的基本結(jié)構(gòu)現(xiàn)在完成時由“助動詞have/has+過去分詞”構(gòu)成，其基本句式結(jié)構(gòu)為：①肯定句：主語+have/has+過去分詞+其他.Ihaveseenthisfilm.②否定句：主語+have/hasnot+過去分詞+其他.Ihavenotseenthisfilm.③一般疑問句：Have/Has+主語+過去分詞+其他?肯定回答：Yes,主語+have/has.否定回答：No,主語+haven't/hasn't.—Haveyouseenthefilm?—Yes,Ihave./No,Ihaven't.二、過去分詞的構(gòu)成1.規(guī)則變化（與動詞過去式規(guī)則一樣，此類稱作規(guī)則動詞）-ed的讀音規(guī)則：①在元音或濁輔音后讀[d]，如tried[tra?d]，lived[l?vd]。②在清輔音后讀[t]，如worked[w??kt]，stopped[st?pt]。③在[t][d]后讀[?d]，如mended[mend?d]，wanted[w?nt?d]。2.不規(guī)則變化（此類稱作不規(guī)則動詞，有很多）三、現(xiàn)在完成時的用法1.表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果。常和just（剛剛），already（已經(jīng)），yet（還，仍然），ever（曾經(jīng)），never（從未），before（以前），sofar（到目前為止）等連用。—Haveyouhadyourbreakfastyet?—Yes,Ihave.I'vejusthadit.—Haveyoueverheardthissong?—No.I'veneverhearditbefore.Juliahascollectedover100beautifulhairclipssofar.圖示法表示現(xiàn)在完成時用法1：表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果。Ihavealreadyhadbreakfast.2.現(xiàn)在完成時還可以表示過去某一時間開始并一直持續(xù)到現(xiàn)在的動作或狀態(tài)，常與“for+時間段”或“since+時間點(diǎn)/從句”連用，這時要用延續(xù)性動詞。Theyhaveworkedinthiscompanyfor30years.Hehasbeeninthearmysince2016.（錯：Hehasjoinedthearmysince2016.）【特別提醒】如果要對for或since短語提問，疑問詞用howlong?！狧owlonghaveyoulivedinthisarea?—Foratleast10years.圖示法表示現(xiàn)在完成時用法2：表示過去某一時間開始并一直持續(xù)到現(xiàn)在的動作或狀態(tài)。Ihavelivedherefor30years.(30年來一直生活在這里。）四、already與yet在現(xiàn)在完成時中的用法解析五、現(xiàn)在完成時VS一般過去時1.現(xiàn)在完成時表示過去發(fā)生的某一動作對現(xiàn)在造成的影響或結(jié)果，強(qiáng)調(diào)的是現(xiàn)在的情況，因此不能和表示過去的時間狀語連用。Ihavealreadydonemyhomework.（不能用lastnight等）I'vebeentoParisbefore.（不能用lastyear等）2.一般過去時只表示過去的動作和狀態(tài)，與現(xiàn)在無關(guān)?？梢院捅硎具^去的時間狀語連用。Ididmyhomeworklastnight.WhendidyougotoParis?（when一定不要和現(xiàn)在完成時連用）3.日常對話中通常兩種時態(tài)配合使用，開始提到一件事做沒做或發(fā)生過時用現(xiàn)在完成時，說起這件事具體情形時用一般過去時?！狧aveyoubeentoJapan?—Yes,Ihave.Iwenttherelastyear.—Whodidyougowith?—…Step3Presentation&Practice4aUsethewordsinbracketstocompletetheconversations.1.A:Wouldyoulikesomethingtodrink?B:No,thanks.________________________.(just/drinksometea)2.A:Iheardyoulostyourkey._______________________?(find)B：No,notyet.3.A:DoyouknowwhenTomisleaving?B:________________________________.(already/leave)A:When_____________________?(leave)B:Thismorning.4.A:Isyoursistergoingtothemovieswithustonight?B:No.___________________________.(already/seethefilm)5.A:Whatdoyourparentsthinkaboutourplan?B:I_____________________________.(not/tellthem/yet)Answers:1.I'vejustdrunksometea2.Haveyoufoundityet3.Hehasalreadyleftdidheleave4.Shehasalreadyseenthefilm5.havenot/haven'ttoldthemyet4bFillintheblankswiththecorrectformsofthewordsinbrackets.Sally______(love)reading.Inthemorning,shereadsthenewspaperandintheeveningshereadsbooks.She______already_______(read)morethan100differentbooks!Herfavoritekindofbooksissciencefiction.Sheisinterestedinscienceandtechnologyandlovestoimaginewhattheworld_________(be)likein50years.She________(finish)readingabookaboutrobotslastweekand_________(write)abookreportaboutitnextweekforherFrenchclass.Everytimesheisinthelibrary,Sallylooksatthemanybooksshe____________(notread)yetandshecan'twaittoreadthem!Answers:loveshasreadwillbefinishedwillwritehasn'treadExplainthekeywordsandphrases.4cCompletethechartwithinformationaboutyouandafriend.A:Whatbookshaveyoualreadyread?B:I'vealreadyreadTomSawyerandHarryPotter.A:Whatdoyouthinkofthem?B:Well,IthinkHarryPotterwasexciting,butTomSawyerwasabitboring.ExperiencesYouYourfriendCommentsBooksIhavealreadyreadMoviesIhavealreadyseenSongsIhavealreadyheardStep4Summary&HomeworkSummaryAskSstodotheexercisesfromPPTP24-28.HomeworkPreviewthenewwordsandphrasesinSectionB(1a-1d).Dotheexercisesinstudents'book.TeachingReflectionWealwaysgetthestudentstolearngrammarbysummingupthesentencesth