Unit8MakingaDifference(第3课时)SectionA4a-4d课件人教版英语八年级下册

八年级下册英语人教版MakingaMakingaMakingaUnit8SectionA–Whatcanwedotohelp?第三课时4a-4dDifferenceDifferenceDifferenceLearning01goals第一课时1a-2dLearnnewwordsandphrases:army,soldier,primary,helpout,charity,warmly.1第一课时1a-2dExpressdurationusingthepresentperfecttensewithsinceandfor.2Warming02upGrammar03第一课时1a-2dReadthesentences.Howareforandsinceuseddifferently?4aHaveyoubeentoouranimalshelterbefore?Hassheeverdonevolunteerwork?Howlonghaveyoubeenavolunteer?Howlonghasheworkedasavolunteeratthemuseum?No,Ihaven’t.Butoneofmyfriendshasvolunteeredherefor

alongtime.Yes,shehas.ShehasbeenavolunteeratanursinghomesincelastAugust.Ihavebeenavolunteerhere

for

afewmonths.Hehasvolunteeredheresince

hissummerholidaysstarted.for后接一段时间；since后接时间点或从句。Grammar(一)含since或for的现在完成时第一课时1a-2d某些动词的现在完成时可表示从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”和“since+过去的时间点或从句”连用。Hehasworkedhereforovertwentyyears.他已经在这里工作二十多年了。Hehaslearntabout2,000EnglishwordssincehestartedlearningEnglish.他自开始学英语以来已经学了大约2000个英语单词。Thefactoryhasbeenheresincethe1970s.这家工厂从20世纪70年代起就在这里了。第一课时1a-2d含for和含since的现在完成时的句子有时可互相转换。我从13年前开始就住在这里。I’velivedherefor13years.Ithasbeen13yearssinceIbegantolivehere.（二）现在完成时中的谓语动词规则变化第一课时1a-2d在含有现在完成时的肯定句中，与表示持续性时间的状语连用的动词一般为延续性动词，但在否定句中，可以用非延续性动词。常见的延续性动词有have、live、teach、learn、work、study、know等；常见的非延续性动词(词组)有come、go、leave、start、die、finish、become、join、buy、getmarried等。HehasjoinedthecommunistyouthLeaguefortwoyears.HehasbeenamemberofthecommunistyouthLeaguefortwoyears.（）（）第一课时1a-2d他加入共青团两年了。Ihaveboughtthiswatchfortwoyears.Ihavehadthiswatchfortwoyears.（）（）第一课时1a-2d这块手表我买了两年了。部分非延续性动词(词组)和与之对应的延续性动词(词组）非延续性动词(词组)延续性动词(词组)becomebeborrowkeepbuyhaveleavebeawayfromfallasleepbeasleepmakefriendsbefriends非延续性动词(词组)延续性动词(词组)finishbeoveropenbeopenclosebeclosedlosebelostdiebedead非延续性动词(词组)延续性动词(词组)joinbeamemberof/beinbegin/startbeoncome/go/arrivebein/atturnon/offbeon/offgettoknowknowmarry/getmarriedbemarried第一课时1a-2d表示过去发生的某一动作对现在造成的影响或产生的结果，强调的是现在的情况；不能和表示过去的时间状语连用。（三）现在完成时和一般过去时的区别Hehaslivedheresince2008.自2008年以来他一直住在这里。(他现在还住在这里)现在完成时第一课时1a-2d只表示过去的动作或状态，和现在不发生联系；可以和表示过去的时间状语连用。（三）现在完成时和一般过去时的区别Helivedherein2012.2012年他住在这里。(不涉及他现在是否还住在这里)—般过去时1.Thiscollegestudentenjoysvolunteeringforthearmy.She_________(teach)Englishtothesoldiers_____threeyears.2.I__________(be)amemberoftheRedCrossforsixyears.I’vemadealotoffriends______Ijoinedtheorganization.第一课时1a-2dCompletethesentenceswiththecorrectformsoftheverbsinbracketsandfororsince.4bhavebeensincehavetaughtfor3.MrWuhastaughtinaprimaryschoolasavolunteer_____twoyearsnow._____hestartedworkingthere,he__________(help)manystudents.4.Theorganization___________(train)over6,000volunteers

itbegantoofferclassesthreeyearsago.第一课时1a-2dCompletethesentenceswiththecorrectformsoftheverbsinbracketsandfororsince.4bforhashelpedhastrainedSincesinceIlovebeingavolunteer!I____________(work)withasportsorganizationforalmostthreeyearsnow.haveworked第一课时1a-2dCompletethepassagewiththecorrectformsoftheverbsinbrackets.4cSinceIstarted,I___________(help)outatovertendifferentsportsevents.I__________(make)manynewfriendsandI______even____(meet)manyfamousathletes.Forexample,I_____(meet)twonationalfootballplayersfromArgentinalastmonth.Theywereatastadiumforacharitymatch.havehelpedhavemadehavemetmet第一课时1a-2dCompletethepassagewiththecorrectformsoftheverbsinbrackets.4cThestadium_____(be)sobigthatthey____(get)lost.Igavethemdirectionsandthey_______(smile)and________(thank)mewarmly.Iamproudtobeavolunteer.smiledthanked第一课时1a-2dCompletethepassagewiththecorrectformsoftheverbsinbrackets.4cwasgotPractice04第一课时1a-2dWorkingroups.Interviewyourgroupmatesusingthequestionsbelow.Sharetheanswerswiththeclass.4dknownyourbestfriend/...?hadyourfavouritetoy/...?livedinyourneighbourhood/...?Howlonghaveyoue.g.123—Howlonghaveyouknownyourbestfriend?—Ihaveknownmybestfriendforfiveyears.—Howlonghaveyouhadyourfavouritetoy?—Ihavehadmyfavouritetoyforsixmonths.—Howlonghaveyoulivedinyourneighbourhood?—Ihavelivedinthisneighbourhoodsince2023.Language05points第一课时1a-2dMrWuhastaughtinaprimaryschoolasavolunteerfortwoyearsnow.1作为志愿者吴先生现在已经在一所小学任教两年了。(教材P754b)adj.小学教育的；首要的primaryprimaryschool小学primaryeducation小学教育Formiddleandprimaryschoolstudents,learningtocookhasbecomeamust.对于中小学生来说，学习烹饪已经成为必须要做的事。(1)adj.小学教育的，用于名词前作定语。(2)adj.首要的Personalsafetyisofprimaryimportance.人身安全至关重要。SinceIstarted,Ihavehelpedoutatovertendifferentsportsevents.自我开始工作以来，我已经协助了十多场不同的体育赛事。(教材P754c)helpout分担工作；帮忙做第一课时1a-2d“动词+副词”型短语，人称代词作其宾语时，应放在help与out之间。Forover50years,Terryhasalwaysrememberedhowthestrangerbravelyhelpedthemoutwithoutthinkingtwice.50多年来，特里一直记得这位陌生