英语人教版六年级下册pep英语六下unit4 part A let's talk

Unit4Thenandnow,ALetstalk,Letssay,is-are-go-take-see-watch-read-look-can-,was（是）,were（是）,went（去）,took（拍）,saw（看）,watched（看）,read（看）,looked（看）,could（能）,Look!Thisismyschool!,Itsbigandnice!,Thereare3tallbuildingsinmyschool.,Grandpa.Tellusaboutyourschool,please.,Therewasonlyonesmallbuildingonahill.,(is),（建筑物）,（只有）,Thereisanewlibraryinmyschool.,There_nolibraryinmyoldschool.,was,is,TherearemanycomputersandInternetinmyschool.,There_nocomputersorInternetinmyoldschool.,were,are,（互联网）,star,s,Couldyouseestarsatnight?,Yes,Icould.,moon,OnedayImgoingtovisitthemoon.,Americans,nineteensixty-nine,TheAmericanstookaboutfivedaystogettherein1969.,moon,（take花费）,（大约）,Howdoyouknowthat?,Easy.,IlookeditupontheInternet.,（lookup查阅）,easy容易的,Readandanswer：,1.Wastherealibraryingrandpasoldschool?2.Whatwasgrandpasschoollike?,No,therewasnt.,Therewasnolibraryinhisoldschool.Therewasonlyonesmallbuildingonahill.TherewerenocomputersorInternetinhisoldschool.,Doyouknowthenameofthisstar?,Itsveryeasy.,IcanlookitupontheInternet.,lookup查阅,Internet互联网,lookitupontheInternet,lookitupinthedictionary,lookitupinthebook,friend,star,Ilikethemoon.OnedayImgoingtovisitthemoon.,moon,Tellusaboutyouroldschool,please.,now,fiveyearsago,Theschoolwas_fiveyearsago.Theschoolis_now.,old,new,Thedeskswere_fiveyearsago.Thedesksare_now.,old,new,The_wasoldfiveyearsago.The_isnewnow.单数,The_wereoldfiveyearsago.The_arenewnow.复数,lightschairswalls,blackboardteachersdesk,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?,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!T