Unit8现在完成时（课件）人教版英语八年级下册

现在完成时PresentPerfectTenseMother:John,cleanyourteethplease.John:Mum,Ihavealready(已经)cleaned

them.Father:Tellyoursistertobuysomemilk,John.John:Oh,shehasjust(刚刚)boughtsome.Whathasjusthappenedtohim?Hehasjustlosthisjob.Whathasjusthappenedtoher?Shehasjustgotaloveletter.现在完成时的构成形式presentperfecttense

have

done

has助动词过去分词HehaslivedinXi’anfor4years.HashelivedinXi’anfor4years?Yes,hehas./No,hehasn’t.二:用法:1)现在完成时表示过去发生的动作,并对现在有影响。Someonehasbrokenthewindow.(窗户现在是坏的)Ihavealreadylostthekey.(我现在没有钥匙)Ihaven’treadthatbookyet.(不了解书的内容)Ihavejustcleanedmyhands.(手是干净的)常与already(已经),yet(已经),just(刚刚),ever(曾经)等词连用.already:常用于肯定句(positivesentence)中.yet:常用于否定句(negativesentence),疑问句(question)尾.Translatethefollowingsentences.你已经找到你的书了吗?(find-found)Haveyoufoundyourbookyet?Translatethefollowingsentences.2.他们在这个城市建了许多房子.(build-built)Theyhavebuiltmanybuildingsinthiscity.Translatethefollowingsentences.3.Judy还没到达.(arrive-arrived)Judyhasn’tarrivedyet.Translatethefollowingsentences.4.你吃过早饭了吗?(have-had)Haveyouhadbreakfast?Translatethefollowingsentences.5.她刚刚离开.(leave-left)Shehasjustleft.现在完成时二:用法:2)现在完成时表示从过去一直持续到现在的动作或状态。ShehaslearnedEnglishfor5years.HehaslivedinBeijingsince(自从)hewasborn.Haveyoustayedheresince(自从)3o’clock?现在完成时常与for,since引导的时间短语或从句连用.for+时间段(aperiodoftime)since+时间点(acertaintime)

,since+句子(sentence)用for或since填空Mr.BrownhashadhisTV________15years.I’vetakendrivinglessons_________lastmonth.forsince用for或since填空3.Mysisterhashadhercellphone________amonth.4.Myfriendshaven’tvisitedme___________mybirthday.forsince用for或since填空5.Wehaven’tusedourcar________alongtime.6.Shehasn’thadagoodcupo