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Grammar-Present Perfect TenseLearning objectives:By theend ofthis lesson,you areexpected tobe ableto:
1.grasp the form,the meaningand theusage ofPresent Perfect Tense;（掌握现在完成时态的形式、意义和用法）；
2.master somekey sentencepatterns relatedto PresentPerfectTense（掌握一些与现在完成时态相关的重要句型）
3.use PresentPerfectTensein differentsituations properly.（在不同的情况下正确地使用现在完成时态）Lead in:（）Activity1:Choose theright optionaccording tothe pictures.
1.I haveworked at home for almost amonth.
2.They havebeen stuckathome for along time.
3.He hasjust finishedhis NAT.
4.Max has not gone to bed.
5.The medicalworkers haveleft home./The medicalworkers havebeen awayfromhomefor a week.（现在完成时的形式）Summary-theformof presentperfect tense主动语态肯定形式S+have/has+done+...否定形式S+have not/hasnot+done+...疑问形式Have/Has+S+done+...被动语态have/has+been+done现在完成时用法
（一）一已完成、影响性用法现在完成时表示动作开始于过去，结束于过去,但对现在仍有影响或造成结果通常与表示包括现在在内的时间副词just,already,yet,never,ever,lately,等状语连用recently练习一
1.Ihave lunchalready.
2.the trainarriveyet
3.Tom neverbeto China.
4.The twinsjustsee myfather.现在完成时用法
（二）一未完成，延续性现在完成时强调动作或状态发生于过去一直延续到现在，且有可能继续下去（适用于延续动词）；可以和表示从过去某一时刻延续到现在的一段时间的状语连用，如sofar,up tillnow,up to now,in/during thelast/past years,recently,lately,by等this time,since练习二
1.Westudy Englishfor aboutfour years.
2.Welive inYucai MiddleSchool since
2007.
3.Inot seeMary so far.
4.Ihear nothingfrom him up tonow.
5.Henot talkwith mein the past fewdays.注意！瞬时动词在现在完成时中的用法瞬间性动词如等，arrive,join,die,get,come,buy,sell,leave,borrow,marry以及终止性动词如等，在现在完成时的肯定形式中不能与start,begin,finish“for+一段时间”的时间状语连用，但可以用在否定句或这些动词对应的状态动词中为了表述这种意思，我们常用相应的延续性动词等来代替非延续性动词have,keep,be练习二判断正误I.■
1.He hasleft home.
2.He hasleft homefor10years.
3.He has been awayform homefor10years.-
4.He hasntleft/has stayed here for10year.一
1.He hascome here.
2.He hascome herefor3days.-
3.He hasntcome herefor3days.
4.He hasstayedherefor3days.
15.He hasbeen awayfor3days.选择正确答案II.
1.I havejoined/been in the armyfor tenyears.
2.He hasbeen to/gonetoDalian manytimes.
3.She hasgot married/been mairiedto Robertsforayear.
4.He has gone/been awayfor twodays.
5.He hashad/has boughtthis bookforayear.现在完成时用法三一经历用法现在完成时表示过去某一时间到现在这段期间内曾经有过一次，两次等经历或到目前为止从未有过的经历eg.Have youever beento JapanHehasgoneto Londonthree times.We havenever beento thatisland.与现在完成时有关的重要句式现在完成时.
1.This That/lt isthe firstsecond...time+that-clause•This isthe firsttime thatIsee pandas.这是我第一次看到熊猫现在完成
2.This That/lt isthe best/finest/most interesting...+that-clause时.•It isthe mostdelicious foodthat Itaste.这是我吃过最美味的食物时间段自从…以来..…跟一般过去时
3.It is/hasbeen++since.....since•It beover seventyyears sincethe PeoplesRepublic ofChina wasfounded.中华人民共和国已经成立多年了70拓展练习:
1.Heteach Englishfor twentyyears.
2.Weknow eachother since
1986.
3.This isthe bestfilm thatI see.
4.This isthe firsttime thatIvisit Beijing.
5.The filmbeon forten minutes.
6.Great changestakeplace inthepastthirty years.
7.I hearnothing abouthimuptonow.高考链接
1.The numberof firmsselling computersin thisregiondrop sinceJanuary
2012.
2.Wedo quiteenough workfor themorning;now letstake abreak.
3.I hatemoving.Wehave fourmoves inthree years.
4.The musicianalong withhis bandmembers giveten performancesinthelastthree months.
5.I tooknotes duringthe meeting,but Inothave achance towrite theminto areportsofar.
6.Chinas high-speed railwaysgrow from9,000to25,000kilometers inthe pastfewyears.
7.During thelast threedecades,the numberof peopleparticipating inphysicalfitness programsincreasesharply.
8.The populationof Jiangsugrowto morethan twicewhat itwas in
1949.Thefigure isnow approaching74million.
9.In thelast fewyears,China makegreat achievementsin environmentalprotection.
10.lt isthe mostinstructive lecturethat Iattendsince Icame tothis school.。
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