初中现在完成时系列讲解---完美课件.ppt

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1、present(now)futurepast现在完成时(presentperfecttense)domyhomeworkMother:John,cleanyourteethplease.John:Mum,Ihavealready(已经)cleanedthem.现在完成时一.构成:have/has+done(过去分词)过去分词(pp)其变化方法和动词过去式基本相同。有部分不同，需要记好。HehaslivedinShenzhenfor4years.HashelivedinShenzhenfor4years?Yes,hehas./No,hehasn’t.二:用法:1)现在完成时表示过

2、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:常用于肯定句中.yet:常用于否定句,疑问句尾.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.Heha

3、slivedinBeijingsince(自从)hewasborn.Haveyoustayedheresince(自从)3o’clock?常与for,since引导的时间短语或从句连用.for+时间段since+时间点,since+句子现在完成时一.构成:have/has+done(过去分词)过去分词(pp)其变化方法和动词过去式基本相同。有部分不同，需要记好。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。Ihavejustcalledhim.2表示从过去已经开始，持续到现在的动作或状态。Hehasworkedinthisschoolsincehecamehere

4、.常与already(已经),yet(已经),just(刚刚),ever(曾经)等词连用.常与for,since引导的时间短语或从句连用.Whathasjusthappenedtohim?Hehasjustlosthisjob.Whathasjusthappenedtoher?Shehasjustgotaloveletter.Makesentencesabouttheinventions.Peoplehavereadnewspapersince1610.Peoplehavereadnewspaperforabout400years.since:(自…以来)1)since+时间点

5、He has stayed heresince 5 o’clock.2)since+时间段+agoHe has stayed heresince 5 hours ago.3)since+从句She has taught Englishsince he came here.for:(长达）for+时间段Hehaskeptthebookfor2weeks.since,for的用法:Takenotes用for或since填空Mr.BrownhashadhisTV________15years.I’vetakendrivinglessons_________lastmonth.Mysi

6、sterhashadhercellphone________amonth.Myfriendshaven’tvisitedme___________mybirthday.Wehaven’tusedourcar________alongtime.Shehasn’thadagoodcupofcoffee_________years.Tomhaswornglasses_________hewas7yearsold.forsinceforsinceforforsincelearnedEnglish?hadyourwatch?studiedinourschool?hadyourcurren

7、thairstyle(发型)?knownyourbestfriend?wornyourglasses?Homework:抄写动词以及过去式和过去分词。1.be--2.come—3.go--4.do—5.have--6.drink—7.give--8.eat–9.know--10.make—11.run--12.say—13.see--14.find—15.draw--16.get—17.hear--18.begin—19.buy--20.leave—was/were--beencame--c