Unit8現(xiàn)在完成時(shí)（課件）人教版英語八年級(jí)下冊(cè)

現(xiàn)在完成時(shí)PresentPerfectTenseMother:John,cleanyourteethplease.John:Mum,Ihavealready(已經(jīng))cleaned

them.Father:Tellyoursistertobuysomemilk,John.John:Oh,shehasjust(剛剛)boughtsome.Whathasjusthappenedtohim?Hehasjustlosthisjob.Whathasjusthappenedtoher?Shehasjustgotaloveletter.現(xiàn)在完成時(shí)的構(gòu)成形式presentperfecttense

have

done

has助動(dòng)詞過去分詞HehaslivedinXi’anfor4years.HashelivedinXi’anfor4years?Yes,hehas./No,hehasn’t.二:用法:1)現(xiàn)在完成時(shí)表示過去發(fā)生的動(dòng)作,并對(duì)現(xiàn)在有影響。Someonehasbrokenthewindow.(窗戶現(xiàn)在是壞的)Ihavealreadylostthekey.(我現(xiàn)在沒有鑰匙)Ihaven’treadthatbookyet.(不了解書的內(nèi)容)Ihavejustcleanedmyhands.(手是干凈的)常與already(已經(jīng)),yet(已經(jīng)),just(剛剛),ever(曾經(jīng))等詞連用.already:常用于肯定句(positivesentence)中.yet:常用于否定句(negativesentence),疑問句(question)尾.Translatethefollowingsentences.你已經(jīng)找到你的書了嗎?(find-found)Haveyoufoundyourbookyet?Translatethefollowingsentences.2.他們?cè)谶@個(gè)城市建了許多房子.(build-built)Theyhavebuiltmanybuildingsinthiscity.Translatethefollowingsentences.3.Judy還沒到達(dá).(arrive-arrived)Judyhasn’tarrivedyet.Translatethefollowingsentences.4.你吃過早飯了嗎?(have-had)Haveyouhadbreakfast?Translatethefollowingsentences.5.她剛剛離開.(leave-left)Shehasjustleft.現(xiàn)在完成時(shí)二:用法:2)現(xiàn)在完成時(shí)表示從過去一直持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。ShehaslearnedEnglishfor5years.HehaslivedinBeijingsince(自從)hewasborn.Haveyoustayedheresince(自從)3o’clock?現(xiàn)在完成時(shí)常與for,since引導(dǎo)的時(shí)間短語或從句連用.for+時(shí)間段(aperiodoftime)since+時(shí)間點(diǎn)(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