英语人教版六年级下册Unit 4 then and now

Unit4,Thenandnow,A.Letstalk,Writethepastform(写出过去式）,is-are-like-take-look-,was,were,liked,took,looked,then（那时）,now（现在）,Therewas（有）onlyanoldblackboardthen.Thereis（有）anewblackboardnow.,Therewere（有）someolddesksthen.Thereare（有）somenewdesksnow.,Theclassroomchanged(改变了)alot.,1.过去“有什么东西”：Therewasa(an)+单数名词+其它Therewere+复数名词+其它eg:Therewasonlyanoldblackboard10yearsago.Thereweresomeolddesksthen.2.过去“没有什么东西”:Therewasno+单数名词+其它Therewereno+复数名词+其它eg:TherewasnoTVthenTherewerenocompurters10yearsago.,stars,Canyouseethestarsduringtheday（在白天）?,Yes,Ican.,No,Icant.,/,Icanseestarsatnight.,Doyouknowthenameofthisstar?,Dontworry!Itsveryeasy.,IcanlookitupontheInternet.,lookup查阅,Internet互联网,lookitupontheInternet,lookitupinthedictionary,lookitupinthebook,friend,star,Ilikethemoon.OnedayImgoingtovisitthemoon.,moon,Canadians（加拿大人）,Chinese,Americans,Whohasbeento(去过）themoonin1969?,TheAmericanstook（花费）aboutfivedaystogettherein1969.（1969年美国人花了大约五天时间到达月球）。,Today,thereisaguest(宾客）visitingtheschool.Listenandtickorcross.,()Theschoolchangedalittle.()Grandpacouldusecomputerswhenhewasatschool.,MissWhite:Children,pleasewelcomeWuYifansgrandfathertotheclass.Class:Welcome!Grandpa:Wow!Theschoolisverydifferentfrommyoldschool.Therewerenocomputersatallbefore.（根本）Mike:Really?Howdidyoulearn?Grandpa:Welistenedtotheteachersandreadlotsofbooks.,G:Wow,alibrary!Therewasnolibraryinmyoldschool.S:Tellusaboutyourschool,please.G:Therewasonlyonesmallbuildingonahill(小山）.小房屋W:Couldyouseestarsatnight?G:Yes,Ilikedthestars.,S:Metoo.OnedayImgoingtovisitthemoon.W:TheAmericanstookaboutfivedaystogettherein1969.S:Howdoyouknowthat?W:Easy,IlookeditupontheInternet.G:Ah!TherewerenocomputersorInternetinmytime（在我那个时代）.,G:Wow,alibrary!Therewasnolibraryinmyoldschool.S:Tellusaboutyourschool,please.G:Therewasonlyonesmallbuildingonahill.W:Couldyouseestarsatnight?G:Yes,Ilikedthestars.,S:Metoo.OnedayImgoingtovisitthemoon.W:TheAmericanstookaboutfivedaystogettherein1969.S:Howdoyouknowthat?W:Easy,IlookeditupontheInternet.G:Ah!TherewerenocomputersorInternetinmytime.,WhatwasGrandpasschoollike?,WhatwasGrandpasschoollike?Therewasonlyonesmallbuildingnearthehill.Therewasnolibraryinmyoldschool.TherewerenocomputersorInternetinmyoldschool.,fiveyearsago,now,Therewasonlyasmallbuildingfiveyearsago.Therearemanytallbuildingsnow.Therewasnoplaygroundfiveyearsago.Th