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Lesson21BooksorComputers?Unit4TheInternetConnectsUsLesson21BooksorComputers?课前自主预习课堂互动探究Unit4TheInternetConnectsUs单词闯关1.press____________2．出现；呈现；来到________→________(反义词)3．现代的；新式的________→________(反义词)4.电子的________5．卖；出售________→________(过去式)appeardisappear印刷机；新闻界modernancientLesson21BooksorComputers?electronic课前自主预习sellsold短语互译1.printingpress____________2.keepon____________3.传递；前进____________4.用手；手工____________5.写下____________6.成千上万的____________印刷机继续passonbyhandwritedownthousandsofLesson21BooksorComputers?句型在线1.后来，人们学会了如何写字和造纸。Later,peoplelearned________________writeandmakepaper.2.仅写一本书就要花费很长的时间！It________alongtime________________justonebook!3.对于普通人来说，读书也变得可能。Itwasalso________________common_______________books.howtotooktowritepossiblefortoreadLesson21BooksorComputers?句型在线4．信息传播得更快、更远了。Informationtravels________________________．5.不管你有什么，一台电脑、一部平板、一台笔记本电脑、一个电子阅读器或一本真正的书，坚持读书！________________whatyouhave,acomputer,atablet,alaptop,ane-readerorarealbook,keepon_______fasterandfartherNomatterreadingLesson21BooksorComputers?词汇点睛课堂互动探究●1passon传递[观察]Inancienttimes,therewerenobooks,andpeoplepassedontheirknowledgebytellingstories.在古代，没有书，人们通过讲故事传递他们的知识。WouldyoupleasepassonthemessagetoBruce?请你给布鲁斯捎个口信好吗？Lesson21BooksorComputers?[探究]passon意为“传递”，与pass意思接近。passonsth.________sb.意为“把某物递给某人”。toLesson21BooksorComputers?活学活用1．根据汉语意思完成句子你能把那本书递给我吗？Canyou________________thatbook________me?passontoLesson21BooksorComputers?●2keepon继续[观察]Nomatterwhatyouhave,acomputer,atablet,alaptop,ane-readerorarealbook,keeponreading!不管你有什么，一台电脑、一部平板、一台笔记本电脑、一个电子阅读器或一本真正的书，坚持读书！词汇点睛[探究]keepon意为“继续”，后接动词时，需用________，表示经过一段时间的间歇后“继续做同一件事”。动名词Lesson21BooksorComputers?[拓展]keepsb.doingsth.意为“让某人一直做某事”；keepsb.fromdoingsth.意为“阻止某人做某事”；keepdoingsth.表示“继续(不断)做某事”，指无停顿或停顿较短。Lesson21BooksorComputers?活学活用2．Ibelieveyourdreamwillcometrueonedayifyoukeepon_______hardfromnowon.A.workB.toworkC.workingD.worksCLesson21BooksorComputers?●Ittookalongtimetowritejustonebook!仅写一本书就要花费很长的时间！[探究]“Ittakes/tooksometimetodosth.”为固定句型，意为“花费……(时间)做某事”，________是形式主语，真正的主语是后面的动词________，此句型常指“花费时间”，一般不用来指“花费金钱”。句型透视it不定式Lesson21BooksorComputers?[拓展]常用的表示“花费”的句型：(1)sb.＋spends＋money/time＋onsth./(in)doingsth.(2)sb.＋pays＋money＋forsth.(3)sth.＋costs＋sb.＋money(4)Ittakessb.＋time＋todosth.Lesson21BooksorComputers?活学活用2017·济宁Thatonemistakealmost________himhislife.A．tookB．paidC．costD．spentC【解析】这四个词均可表示“花费”，但用法不同：take的主语通常是it,常用于“Ittakessb.＋时间/钱＋todosth.”句型；pay的主语通常是人，一般和介词for搭配；cost的主语往往是物或某种活动；spend的主语通常是人，常用于句型“sb.＋spends＋时间/钱＋(in)doingsth./onsth.”。句子的主语“Thatonemistake”为物，故选C。Lesson21BooksorComputers?