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Unit1TheChangingWorldTopic3Theworldhaschangedforthebetter.SectionA1.---Haveyou_____beentoBeijing?---Yes,Ihave.Ihave_____comeback.---No,Ihaven’t

.Ihave_____beenthere.2.---HowlonghaveyoubeeninBeijing?---Ihavebeentheretherefortwoweeks.---Ihavebeentheresincelastweek.everjustneverWhocandescrib

eBeijing?InthepastNowadaysWhattookplaceinNewYork?Asamatteroffact/Infact,Lucyisgoodatdancing.Asamatteroffact/Infact,Iamstrong.asamatteroffact=infact1b

Listento1aandtickwhatwasmentionedaboutNewYork.Inthepastterribletrafficdirtystreetsunfriendlypeopledangeroustolivelessshoppingcente

rsNowadaysbeautifulparkscleanandfreshairhugemarketsfamousmuseumsgoodschoolsexcellentrestaurants1cWorkin

pairsanddescribeNewYorktoyourpartnerbasedon1b.Youmaystartlikethis:•A:Howmuchdoyouknowaboutthetrafficin

NewYork?•B:Iheardthatthetraffictherewasterrible.Doyouhaveanyideasaboutthestreetsthere?•A:…Completethesentenceswithsinceorfor.1.YouhavebeeninNe

wYork_____alongtime.2.Thecityhasimprovedalot_____Icamehereafewyearsago.forsinceYouhavebeeninNewYorkforalongtime.foralongtimecame

toNewYorkpresentpastsb.have/hasbeenin...某人一直在„„e.g.Ihavebeeninthenewschoolforaweek.foraweeklastweekpresentpastfor+时间段...

,butthecityhasimprovedalotsinceIcamehereafewyearsago.sinceIcamehereafewyearsagocameherepresentpastsince+从句（从句谓语动词用过去式）e.g.Sh

eworksintheschoolsince1995.since1995livedpresentpastsince+时间点e.g.HehaswaitedforTomsincetwohoursago.sincetwohoursago8:00presentpastsince+

时间段+ago10:00Ihaveworkedintheschoolforthreeyears.=Ihaveworkedintheschoolsincethreeyearsago.=Ihaveworkedinth

eschoolsince2011.=IhaveworkedheresinceIcametotheschool.for+时间段since+时间段+agosince+时间点since+从句3Lookcarefullyandthi

nkaboutthedifferencesbetweensinceandforin1a.Thencompletethesentenceswithsinceorforandlistenandcheck.1.Ih

avelivedinBeijing______threeyears.______2011.2.HehaswaitedforTom______twohoursago.______twohours.3.Wehavelearnedchemistry___onem

onth.____thenewtermbegan.forforforsincesincesincen.化学n.学期Fillintheblankswithfororsince.1.Hisfatherhasbeendead______hewastenyearsold.2.Michaelhasb

eenawayfromthearmy______sixyears.3.HehasbeeninChongqing_______2003.4.Mybrotherhashadacar______twomonths.5.Tomhaskeptabook____

__5:00a.m.sinceforsinceforsince2Listentothepassageandfillintheblankswiththecorrectformsofthegivenwordsorphrases.BroadwayisastreetinNewY

ork.Ithasbeenthere____1811.It________bedirty.Butit____________sincethe1920s.TheareanearTimesSquareis

thehomeofBroadwaytheaters.Therehavebeenmanyfamous______alongthestreetformanyyears.Alotofartistsperformplays,concertsandoperasthe

re.Everyyearmillionsofvisitorscometoenjoythe________musicanddanceonBroadway.______________,BroadwaystandsfortheAmeric

antheatreindustry.sinceusedtotheaterswonderfulAsamatteroffacthasimprovedn.艺术家n.参观者n.产业，工业theaterusedtoimprovewonderfulasamatterof

factsincen.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.艺术家n.产业，工业n.产业，工业n.参观者n.参观者millionsof用法：在英语中hundred,th

ousand,million,billion等词，当其前面有数词时，它们不加“s”使用，其后也不用介词of.直接跟可数名词的复数形式。如：fivemillionpeople五百万人当表达不确定数字时，在它们后面加上“s”再加介词of使用。后接可数名词的复数形式

，表示“数百”“数千”“数百万”“数十亿”。如：millionsofpeople数百万人4Workingroupsandtalkabouttheplaceyoulive.Comparetoday’ssituationwith

thatofthepast.Thefollowingdialogsmayhelpyou.A:Ihavebeenin…for/since…B:Howdoyoulikelivingthere?A:Itis…/Verygood./Ireally…B:Wa

sthelocaltrafficterrible/good/…?A:Yes./No,itwas…/usedtobe…inthepast,andnowitis…B:…likethis:Ihavebeenin…for/since…Itis…Ireallylikelivi

ngthere.Itusedtobe…inthepast,andnowitis…Summary:1.Somewords:block,artist,visitor,industry,chemistry,term

2.Somephrases:asamatteroffact,millionsof3.Somesentences:1.Youwillgetusedtoitverysoonifyoucome.2.Asamatte

roffact,it’sawonderfulplacetolive.3.Youmustcomeforavisit.4.ThenyoucanseeNewYorkyourself.UsethePresentPerfectTense

withforandsince.1.YouhavebeeninNewYorkforalongtime.2.ThecityhasimprovedalotsinceIcamehereafewyearsago.Homework