2025年春人教版八年级下册英语 Unit 8 Section A（GF-4c）教案

Unit8HaveyoureadTreasureIslandyet?SectionA（GF-4c）TeachingAims1.语言能力：了解现在分词的构成，学习现在完成时的用法。2.文化意识：以名著为话题进行问答或对话，拓展学生知识面，培养文学素养。3.思维品质：能发现同类型语篇的相似之处和不同类型语篇的结构特征。4.学习能力：能制订明确的英语学习目标和计划，合理安排学习任务，主动预习和复习。TeachingDifficulties熟练掌握already，yet在现在完成时中的用法。TeachingAidsmultimediacoursewareorotherrealiathattheTneedsforteachingTeachingProceduresTipsStep1WarmingupAsktheSstowatchavideoaboutpresentperfecttense!Step2Presentation&PracticeGrammarFocusAskSstoreadthesentencesinthebox.AsktheSsthefollowingquestions:1.Howisthepresentperfecttenseformed?2.Whatadverbsareoftenusedwiththepresentperfecttense?3.含现在完成时的句子如何构成一般疑问句？Answers:1.have/has+过去分词.2.Alreadyandyet.3.将助动词have/has放在主语之前。Grammar现在完成时（一）一、现在完成时的基本结构现在完成时由“助动词have/has+过去分词”构成，其基本句式结构为：①肯定句：主语+have/has+过去分词+其他.Ihaveseenthisfilm.②否定句：主语+have/hasnot+过去分词+其他.Ihavenotseenthisfilm.③一般疑问句：Have/Has+主语+过去分词+其他?肯定回答：Yes,主语+have/has.否定回答：No,主语+haven't/hasn't.—Haveyouseenthefilm?—Yes,Ihave./No,Ihaven't.二、过去分词的构成1.规则变化（与动词过去式规则一样，此类称作规则动词）-ed的读音规则：①在元音或浊辅音后读[d]，如tried[traɪd]，lived[lɪvd]。②在清辅音后读[t]，如worked[wɜːkt]，stopped[stɒpt]。③在[t][d]后读[ɪd]，如mended[mendɪd]，wanted[wɒntɪd]。2.不规则变化（此类称作不规则动词，有很多）三、现在完成时的用法1.表示过去发生或已经完成的动作对现在造成的影响或结果。常和just（刚刚），already（已经），yet（还，仍然），ever（曾经），never（从未），before（以前），sofar（到目前为止）等连用。—Haveyouhadyourbreakfastyet?—Yes,Ihave.I'vejusthadit.—Haveyoueverheardthissong?—No.I'veneverhearditbefore.Juliahascollectedover100beautifulhairclipssofar.图示法表示现在完成时用法1：表示过去发生或已经完成的动作对现在造成的影响或结果。Ihavealreadyhadbreakfast.2.现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态，常与“for+时间段”或“since+时间点/从句”连用，这时要用延续性动词。Theyhaveworkedinthiscompanyfor30years.Hehasbeeninthearmysince2016.（错：Hehasjoinedthearmysince2016.）【特别提醒】如果要对for或since短语提问，疑问词用howlong。—Howlonghaveyoulivedinthisarea?—Foratleast10years.图示法表示现在完成时用法2：表示过去某一时间开始并一直持续到现在的动作或状态。Ihavelivedherefor30years.(30年来一直生活在这里。）四、already与yet在现在完成时中的用法解析五、现在完成时VS一般过去时1.现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，因此不能和表示过去的时间状语连用。Ihavealreadydonemyhomework.（不能用lastnight等）I'vebeentoParisbefore.（不能用lastyear等）2.一般过去时只表示过去的动作和状态，与现在无关。可以和表示过去的时间状语连用。Ididmyhomeworklastnight.WhendidyougotoParis?（when一定不要和现在完成时连用）3.日常对话中通常两种时态配合使用，开始提到一件事做没做或发生过时用现在完成时，说起这件事具体情形时用一般过去时。—HaveyoubeentoJapan?—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