學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精年級(jí)高一學(xué)科英語總課時(shí)課題M2Unit1———-Grammar2第___2__課時(shí)主備人司倩倩上課時(shí)間鎖定目標(biāo)找準(zhǔn)方向備注Learningaims1。Learnhowtoformandusethepresentperfecttense。2。Understandwhenthepresentperfectcontinuoustenseisusedinsentences.自主預(yù)學(xué)摸清學(xué)情預(yù)學(xué)指導(dǎo)：1.學(xué)生自主預(yù)習(xí)課文中的grammar部分2.完成預(yù)習(xí)講義中的部分預(yù)學(xué)檢查：檢查課文預(yù)習(xí)的情況,根據(jù)講義做的情況進(jìn)行講解合作探究攜手共進(jìn)Step1Comparethetwotenses1。Weusethepresentperfecttensetotalkaboutanactioncompletedintherecentpast，andthepresentperfectcontinuoustenseforanactionthatstartedinthepastandisstillhappening.現(xiàn)在完成時(shí)和現(xiàn)在完成進(jìn)行時(shí)都表示動(dòng)作從過去開始,但現(xiàn)在完成時(shí)可表示事件或動(dòng)作剛結(jié)束，而現(xiàn)在完成進(jìn)行時(shí)則強(qiáng)調(diào)動(dòng)作仍在繼續(xù).1)LiJiahasreadabookaboutStonehenge.（表示她已經(jīng)讀完了.)2)LiJiahasbeenreadingabookaboutStonehenge。(表示她仍在讀。)2。Wecanusethepresentperfecttenseforrepeatedactions,andthepresentperfectcontinuoustensefornon-stopactions。Weusuallyusethepresentperfecttensetoaskquestionsbeginningwithhowmany/much,andthepresentperfectcontinuoustensetoaskquestionsbeginningwithhowlong?，F(xiàn)在完成時(shí)可表示反復(fù)發(fā)生的動(dòng)作，提問時(shí)用howmany/howmuch。而現(xiàn)在完成進(jìn)行時(shí)則表示持續(xù)的、不間斷的動(dòng)作，提問時(shí)用howlong。1)-HowmanytimeshaveyouvisitedEgyptthismonth？你這個(gè)月去了埃及幾次?—IhavevisitedEgypttwicethismonth.我這個(gè)月去了埃及兩次.拓展提升學(xué)以致用3。Wecanuseeitherastateverboranactionverbwiththepresentperfecttensebutweusuallycanonlyuseanactionverbwiththepresentperfectcontinuoustense.現(xiàn)在完成時(shí)可以用表示狀態(tài)的動(dòng)詞或表示動(dòng)作的動(dòng)詞做謂語.而現(xiàn)在完成進(jìn)行時(shí)則只能用表示動(dòng)作的動(dòng)詞做謂語.1)Ihavehadthiscameraforfiveyears。(had是表示“擁有”狀態(tài)的動(dòng)詞）2)IhavetakenphotosofUFOswiththiscamera.(taken是表示動(dòng)作的動(dòng)詞)3)IhavebeentakingphotosofUFOswiththiscamera。(taking是表示動(dòng)作的動(dòng)詞)4.Weusethepresentperfecttense,notthepresentperfectcontinuoustense，withthewordslikenever,yet,alreadyandever.現(xiàn)在完成時(shí)的句子中可以用像never、yet、already和ever這樣的詞，而現(xiàn)在完成進(jìn)行時(shí)的句子中則不可以用這樣的詞。Exercise:(T）IhavenevervisitedAmerica。（T）IhavealreadybeentoAmerica.（F)IhaveneverbeenvisitingAmerica反饋評(píng)價(jià)體驗(yàn)成功Step2Practice1。PartA:Readtheconversationandcircletherightwordstocompleteit.Answers：(1)heard(2)beendoing（3）beenresearching（4）beendoing（5)started(6)done（7）read(8）found(9）started(10)beendoing（11）beenmaking2.Trytoanswerthefollowingquestionsaccordingtothecomicstrip。(1)Wheredoyouthinktheboyhasbeenwaiting？（Hehasbeenwaitingatanunder-groundstation。）（2）Whathavethealiensbeentravelingin?Whatdoesitlooklike?(TheyhavebeentravelinginanUFO.Itlookslikeasaucer.）(3)Whoelsehavethealienstalkedto？（Theyprobablyhavetalkedtoanimalsorplantsontheearthaswellascreaturesonotherplants.)（4）Whatotherplanetshavethealiensvisited?(TheyhavevisitedMars，Venus,Jupiterandsomeotherplanets.)Step3.Usethesesubjectsandverbstowritesentenceswith“already"and“notyet."Example：I–gotochurchIhavealreadygonetochurch._______________________________Ihaven’tgonetochurchyet。________________________________1。I–graduatefromcollege________________________________________________________________________________________________________________2。Mydog–gethisshots________________________________________________________________________________________________________________3。Blake–cleanhisroom________________________________________________________________________________________________________________4。MickeyandJane–getmarried______