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Unit1TheChangingWorldTopic3Theworldhaschangedforthebetter.SectionA1.---Haveyou_____beentoBeijing?---Yes,Ihave.Ihave_____comeback.---No,Iha

ven’t.Ihave_____beenthere.2.---HowlonghaveyoubeeninBeijing?---Ihavebeentheretherefortwoweeks.---Ihavebeent

heresincelastweek.everjustneverWhocandescribeBeijing?InthepastNowadaysWhattookplaceinNewYork?Asamatteroffact/Infact,Lucyisgoodatdancing.Asamat

teroffact/Infact,Iamstrong.asamatteroffact=infact1bListento1aandtickwhatwasmentionedaboutNewYork.Inthepastterribletrafficdirtystreetsu

nfriendlypeopledangeroustolivelessshoppingcentersNowadaysbeautifulparkscleanandfreshairhugemarketsfamousmuseumsgoodschoolsexcellentr

estaurants1cWorkinpairsanddescribeNewYorktoyourpartnerbasedon1b.Youmaystartlikethis:•A:HowmuchdoyouknowaboutthetrafficinNewYork?•B:Iheardthatthetraf

fictherewasterrible.Doyouhaveanyideasaboutthestreetsthere?•A:…Completethesentenceswithsinceorfor.1.YouhavebeeninNewYork_____alongtime.

2.Thecityhasimprovedalot_____Icamehereafewyearsago.forsinceYouhavebeeninNewYorkforalongtime.foralongtimeca

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

improvedalotsinceIcamehereafewyearsago.sinceIcamehereafewyearsagocameherepresentpastsince+从句（从句谓语动词用过去式）e.

g.Sheworksintheschoolsince1995.since1995livedpresentpastsince+时间点e.g.HehaswaitedforTomsincetwohoursago.sincetwohoursago8:00p

resentpastsince+时间段+ago10:00Ihaveworkedintheschoolforthreeyears.=Ihaveworkedintheschoolsincethreeyearsago.=Ihaveworkedintheschoolsi

nce2011.=IhaveworkedheresinceIcametotheschool.for+时间段since+时间段+agosince+时间点since+从句3Lookcarefullyandthinkaboutthedifferencesbetweensinceandf

orin1a.Thencompletethesentenceswithsinceorforandlistenandcheck.1.IhavelivedinBeijing______threeyears.______2011.2.HehaswaitedforTo

m______twohoursago.______twohours.3.Wehavelearnedchemistry___onemonth.____thenewtermbegan.forforforsincesincesincen.化学n.学期Fillintheblanks

withfororsince.1.Hisfatherhasbeendead______hewastenyearsold.2.Michaelhasbeenawayfromthearmy______sixyears.3.HehasbeeninChongqing_______2003.4.My

brotherhashadacar______twomonths.5.Tomhaskeptabook______5:00a.m.sinceforsinceforsince2Listentothepassageandfillintheblankswiththecorrectform

softhegivenwordsorphrases.BroadwayisastreetinNewYork.Ithasbeenthere____1811.It________bedirty.Butit____________sincethe1920s.Thearean

earTimesSquareisthehomeofBroadwaytheaters.Therehavebeenmanyfamous______alongthestreetformanyyears.Alotofartistsperfor

mplays,concertsandoperasthere.Everyyearmillionsofvisitorscometoenjoythe________musicanddanceonBroadway.____

__________,BroadwaystandsfortheAmericantheatreindustry.sinceusedtotheaterswonderfulAsamatteroffacthasimprovedn.艺术家n.参观者n.产业，工业theateru

sedtoimprovewonderfulasamatteroffactsincen.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,thousand,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4Workingroupsandtalka

bouttheplaceyoulive.Comparetoday’ssituationwiththatofthepast.Thefollowingdialogsmayhelpyou.A:Ihavebeenin…for/since…B:Howdoyoulikelivingth

ere?A:Itis…/Verygood./Ireally…B:Wasthelocaltrafficterrible/good/…?A:Yes./No,itwas…/usedtobe…inthepast,andnowitis…B:…likethis:Ihavebeenin…

for/since…Itis…Ireallylikelivingthere.Itusedtobe…inthepast,andnowitis…Summary:1.Somewords:block,artist,visitor,industry,chemis

try,term2.Somephrases:asamatteroffact,millionsof3.Somesentences:1.Youwillgetusedtoitverysoonifyoucome.2.Asamatteroffact,it’sawonderfulplacetol

ive.3.Youmustcomeforavisit.4.ThenyoucanseeNewYorkyourself.UsethePresentPerfectTensewithforandsince.1.YouhavebeeninNewYorkforalo

ngtime.2.ThecityhasimprovedalotsinceIcamehereafewyearsago.Homework