人教版新目标初中八年级下册现在完成时态.pptVIP

现在完成时八年级下册时态之二01现在完成时表示过去发生的动作,并对现在有影响。02现在完成时表示从过去一直持续到现在的动作或状态。现在完成时的含义及用法主语+助动词have/has+not+动词的过去分词.4疑问式：5肯定式：1主语+助动词have/has+动词的过去分词.2否定式:3助动词Have/Has+主语+动词的过去分词?6现在完成时的基本句型：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)此时，现在完成时常与already(已经),yet(已经),just(刚刚),ever(曾经)等词连用，通常放在助动词之后，过去分词之前。already:常用于肯定句中.yet:用于否定句，翻译为还没。疑问句尾.翻译为已经试一试你已经找到你的书了吗?(find-found)他们在这个城市建了许多房子.(build-built)Judy还没到达.(arrive-arrived)你吃过早饭了吗?(have-had)Haveyoufoundyourbookyet?Theyhavebuiltmanybuildingsinthiscity.Judyhasn’tarrivedyet.Haveyouhadbreakfast?since+时间点,since+句子，since+时间段+ago常与for,since引导的时间短语或从句连用.for+时间段用法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?用for或since填空Mr.BrownhashadhisTV______15years.I’vetakendrivinglessons_______lastmonth.Mysisterhashadhercellphone_____amonth.Myfriendshaven’tvisitedme_______mybirthday.Wehaven’tusedourcar_____alongtime.Shehasn’thadagoodcupofcoffee____years.Tomhaswornglasses_______hewas7yearsold.forsinceforsinceforforsince常用于现在完成时的时间副词,介词:already(已经):用于肯定句Ihavealreadypostedtheletter.yet(已经):用于否定句,疑问句Hehasn’tdonehishomeworkyet.just(刚刚)Theyhavejustleft.ever(曾经)HaveyoueverbeentoBeijing?never(从不)Ihaveneverseenhim.before(以前)Haveyouseenthefilmbefore?since(自从…以来)I’veworkedintheschoolsince1999.for(长达)He’slivedinShenzhenfor6years.inthepastseveraldays/weeks/years(在过去的…)recently(最近)Ihavenotwrittentomyparentsrecently.sofar(到目前为止)Sofarshehaslearned5Englishsongs.uptonow(到目前为止)this