unit 6 when was it invented 课文重难点讲解

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1、Unit6Whenwasitinvented?一、重点短语1.thinkof想出seemtodosth似乎要做2.haveapoint有道理atthattime在那时3.byaccident偶然；意外地fallinto落入；掉入4.maketea制茶lessthan少于5.takeplace发生；出现aroundtheworld全世界6.withoutdoubt毫无疑问thenatureof.........的本质7.dropinto掉进atalowprice以低价8.advisesb.(not)todosth劝某人（不）做allofasudden突然；猛然

2、9.workon从事于besimilarto与......类似10.bymistake错误地intheend最后11.theOlympics奥林匹克运动会divide...into...把......分开12.atthesameto同时stop...fromdoing...阻止......做......13.dreamof梦想thenumberof......的数量14.lookupto钦佩；仰慕encouragesb.todosth鼓励某人做某事15.takenotes记笔记decideon决定16.comeupwith想出二、重点句型1.—Whenwas

3、thetelephoneinvented?—Ithinkitwasinventedin18762.—Whowasitinventedby?—ItwasinventedbyWhitcombJubson:SectionA课文精讲精析1.IthinktheTVwasinventedbeforethecar.我认为电视机先于汽车被发明。【解析1】：inventv发明→inventorn发明家→inventionn发明熟记：Edison,agreat_____________,__________over1’000__________allhislife.(inven

4、t)练习：①.Papermakingisagreat__________(invent)ofancientChina.②.Ithinkthelightbulbisoneofthemostimportant__________(invent)③.Thecar___________(invent)in1885.【辨析2】：invent/discover/find/findoutinvent发明发明的东西是从前没有的Whoinventedthesteamengine?谁发明了蒸汽机？discover发现发现的事物是本来存在的或是有人知道的Columbusdisco

5、veredAmerica哥伦布发现了美洲find找到指寻找的结果。是非延续性动词Iamlookingformybike,butImaynotfindit.我正在找我的自行车，可是不一定能找到。findout找出、查明指经过观察、调查把某事、某物查出来，搞清楚，弄明白Whenhewasachild,helikedtofindouthowthingsworked.他孩提时代时，就爱弄明白各种事物的来龙去脉。22练习：①Gibert____________electricity,butEdison___________theelectriclightbulb.吉尔

6、贝特发现了电，而爱迪生发明了电灯泡。②Bell________thetelephonein1876.③Columbus____Americain1492.（）A.inventB.discoverC.inventedD.discovered④Thelightbulbisoneofthemostuseful_____________(invent)intheworld.⑤.Whatdoyouthinkisthegreatest______(invent)ofthetwentiethcentury?⑥.Afterhardtrainingforalongtime,L

7、iuXiang____therecordsagain.A.brokeB.achievedC.inventedD.completed⑦Ithinkthetelephonewasinventedin1876.A.createdB.foundC.seenD.used⑧.Themobilephonehasinfluencedpeople’slifealotsinceit_________.A.inventsB.inventedC.isinventedD.wasinvented【解析3】一般过去时的被动语态I.定义：表示过去某一时间的被动动作或过去经常性、习惯性的被动

8、动作，无需说明动作执行者时可省去“by+动作执行者”