青少版新概念3A unit 4

青少版新概念3Aunit4第1页/共41页现在完成时区别：havebeento和havegonetohavebeento去了，已经回来havegoneto去了，还没有回来Reviewunit3

PatternPractice第2页/共41页Hehas__________Hollandandcameback.He_________Holland_________.(time)beentowenttolastweek第3页/共41页Hehas__________Mexicoandisstillthere.He_________Mexico_________.(time)gonetowenttolastmonth第4页/共41页Hehas__________Norwayandcameback.He_________Norway_________.(time)beentowenttolastyear第5页/共41页Hehas__________Brazilandisstillthere.He_________Brazil____________.(time)gonetowenttolastsummer第6页/共41页Hehas__________Indiaandisstillthere.He_________India______________.(time)gonetowenttoafortnightago第7页/共41页Hehas__________Australiaandcameback.He_________Australia______________.(time)beentowenttosixmonthsago第8页/共41页Hehas__________Thailandandisstillthere.He_________Thailand_________.(time)gonetowenttoin1999第9页/共41页Hehas__________Chinaandcameback.He_________China_________.(time)beentowenttoin2003第10页/共41页祖国玩的开心市场农夫水壶准时地担心短信Wordreview第11页/共41页haveagoodtimeontimestillkettleboardhomecountrytextfarmerWordreview第12页/共41页boardontimetextlikecrazyhaveagoodtimemarketstillkettlefarmerLet’sreviewanddothedictationworryexcitinghomecountry第13页/共41页Phrases:Howexciting!

Whataworryforyou!

bewithPaul

phoneoff

amomentagoputthekettleon

haveanicecupoftea

第14页/共41页We’regoingtoputthekettleon.

We’renotgoingtoworry,arewe?I’llmissherlikecrazy.We’vealreadyhadalongmorning.

HaveyoubeentotheFarmers’Markettoday?第15页/共41页PatternPractice现在完成时havebeeninsp.for+一段时间

HehasbeeninAmericafortwomonths.since/for的区别since+时间的点，句子for+一段时间Forexample:sincelastsummer,sinceIwasfive,fortwoweeks第16页/共41页WhereisJack?____________________Howlonghashebeen____________?Hehasbeen___________for___________.Hehasbeen__________since_____________HehasgonetotheSheStatesintheStateslastMheStatesaweek第17页/共41页WhereisDaisy?____________________Howlonghasshebeen____________?Shehasbeen___________for___________.Shehasbeen__________since_____________ShehasgonetoBangkok.inBangkokinBangkoktheendofMay.inBangkokseveralweeks第18页/共41页WhereisPolly?____________________Howlonghasshebeen____________?Shehasbeen___________for___________.Shehasbeen__________since_____________Shehasgonetohospital.inhospitalinhospitallastSunday.inhospitalafewdays第19页/共41页WhereisLucy?____________________Howlonghasshebeen____________?Shehasbeen___________for___________.Shehasbeen__________since_____________Shehasgonetothedentist’s.atthedentist’satthedentist’snineo’clock.atthedentist’sanhour第20页/共41页attheairportattheairportthreeo’clock.attheairportseveralhoursTheyhavegonetotheairport.WhereareWilliamandKaren?____________________Howlonghastheybeen____________?Theyhasbeen___________for___________.Theyhasbeen__________since_____________第21页/共41页lastweekend.aweekWherearethechildren?____________________Howlonghastheybeen____________?Theyhasbeen___________for___________.Theyhasbeen__________since_____________TheyhavegonetotheSeaside.attheseasideattheseasideattheseaside第22页/共41页HowoftenhasJackbeentothecircus?________________________________________________Infact,__________________________________________Hehasn’tbeentothecircusformanyyears.hehasn’tbeentothecircussincehewaslittle.第23页/共41页HowoftenhasNinabeentotheseaside?________________________________________________Infact,________________________________________________Shehasn’tbeentotheseasideforalongtime.shehasn’tbeentotheseasidesinceshewastwo.第24页/共41页HowoftenhasPaulbeentothezoo?________________________________________________Infact,__________________________________________Hehasn’tbeentothezooforages.hehasn’tbeentothezoosincehewasveryyoung.第25页/共41页HowoftenhasAnniebeentothefunfair?________________________________________________Infact,__________________________________________Shehasn’tbeentothefunfairforyears.shehasn’tbeentothefunfairsinceshewasten.第26页/共41页Newwordsandexpressionsattic

n.

阁楼since

n.自从…以来harddisk

n.硬盘lawnmowern.

割草机Megabyte

n.

兆字节nothing

n.没有东西，没有事情jet

n.

喷气式飞机circusn.马戏团several几个zoon.动物园foragesadv.长时间funfairn.露天游乐场第27页/共41页WhatareRobertandWilliamtalkingabout?Whendiditcomeontothemarket?WheredidMumfindit?Howlonghasitbeenthere?Doesitstillwork?Whatdoesthenoisesoundlike?Whatcantheydowithit?Howlonghasn’titbeenoutofitsbox?Whoisamuseumpiece,too?Questions第28页/共41页Let'senjoytheflash!第29页/共41页第30页/共41页Robert:What’sthis,Dad?

William:It’sApple2.It’saveryearlycomputer.

Infact(事实上),it’sthefirstPersonalComputer,

ever(曾今).

Itcameontothemarket（面世）

in1977.Wheredidyoufindit?thefirst第一thesecond第二thethird第三Where特殊疑问词，在哪PC:personalcomputer个人电脑第31页/共41页Robert:Mumfounditinaboxintheattic(阁楼).

William:Oh,thenit’smine!It’sbeenthereforyears.

Infact,it’sbeentheresincewemovedintothishouse!find-found发现Mine=mythingIt’sbeen=ithasbeen

现在完成时have/has+动词过去分词第32页/共41页现在完成时：Have/has+动词过去分词表示动词发生在过去，持续到现在或对现在产生影响，后接表示延续性的时间状语。如：for+时间段since+时间点IhavebeentoAmericasinced1998.Ihavegotthecarfordfiveyears.第33页/共41页sixmonththreeyears

Sundayteno’clocklastweekend

alongtime1996January

forforsincesince第34页/共41页Robert:Doesitstill（仍然）

work?

William:Idon’tknow……Ah,thereyouare!Canyouheartheharddisk（硬盘）?Can是情态动词，表示能够，有能力做某事。Can+动词的原形，变一般疑问句时将Can提前至句首。第35页/共41页情态动词+动词原形can,must,may等都是情态动词，不能独立做谓语，需和实义动词连用。变一般疑问句时将情态动词直接提前至句首。Icanopenthebox.(变一般疑问句)Canyouopenthebox?第36页/共41页Robert:Isthatnoise（噪音）

theharddisk?Itsoundslikealawnmower(割草机)!

William:Itisnoisy（吵闹的，嘈杂的）!Ithasn’tbeenoutofitsboxfortwentyyea