高一英语 Module2 Unit1 Tales of the unexplained Grammar（1）课件 牛津版.ppt

高一英语 module2unit1talesoftheunexplainedgrammar 1 grammarandusage form have has done thepresentperfecttense现在完成时态 havestudied havelived haveread hasfinished 1 we study englishforaboutfiveyears 2 they live inthesouthsincetheirdaughterwasborn 3 i read yourarticlethreetimes it swellwritten 4 thestudent finish herhomeworkalready 5 eric go backtohishometowntoday 6 thepolice justfinish searchingthearea hasgone havejustfinished pointoutwhattenseortensesareusedinthesentencesandthereasonswhytheyareused 1 webegantostudyenglishfiveyearsago wehavestudieditforaboutfiveyears 2 theymovedtothesouthin1990andhavelivedtheresincethen 3 ericlefthomelastyearandhasjustcomeback 4 mybrotherwenttoseemygrandpalastweek hehasvisitedhimthreetimesthismonth 5 hehasjustgoneout hewentoutafewminutesago heisn therenow 6 ihavejustheardthenews nowiknowthenews weusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant weuseitwithtimeexpressionssuchas already ever for just lately never recently since yet sofar inthepastfiveyears notes theboyhasalreadycomehome ihaven theardanythingfromhimyet wehavelivedtherefortwoyears wehaven tseenhimsince2002 wehavelearned4lessonssofar greatchangeshavetakenplaceinchinainthepast60years wesawhimin2002 weusealreadyforaffirmativestatementsandyetfornegativestatementsandinterrogativesentences 2 weusefor aperiodoftimeandsince apointoftime notes lookatthesentencesandfindthedifference tomhasrungupthreetimesthismorning nowitisstillinthemorning tomrangupthreetimesthismorning nowitisnotstillinthemorning billhassmokedsinceheleftschool hestillsmokes billsmokedforsixmonths itmeansthathestoppedsmokingthen tomhashadabadcarcrash he sprobablystillinhospitalnow tomhadabadcarcrash heisprobablyoutofhospitalnow hello i know you be hereinnanjing howlong you be here didn tknow have been were 过去时与现在完成时的区别 1 you mypen yes i itonyourdeskjustnow see 2 you dinner yes i itwithmary have 3 thepostman yetthismorning come thepostman thismorning come had have seen have come did come saw 4 ican tfindmycd where you it i itintheleftdrawer put 5 he greatprogressinthepasttwoyears made 6 they ahardlifeinthepast live have put put hasmade lived where therecorder icannotseeitanywhere i itrighthere butnowitisgone a didyouput haveput b haveyouput putc hadyouput wasputtingd wereyouputting haveput practice p 8 2 3 4 5 6 7 8 9 10 11 answersforthediary saw hasvisited loves hasn tvisited hasseen hasnevermet hastravelled hasfound hasn tfound has been structuresconnectedwiththepresentperfecttense 1 itis hasbeen aperiodoftime since clause 2 this that it isthefirst second time that clause pr