高中英语 Unit 3 Computers Periods 3-5 Reading学案新人教版必修2.doc

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1、Unit3ComputersPeriods3-5Reading一、【学习目标】1.预读文章，了解计算机的发展历程，探索并思考其在当今社会的广泛应用。2.认真再读文章，通过文章细节，列举电脑不同发展阶段的特点和重要事件。3.朗读文章，划出文章中重要的词组和句型，并在小组内查资料，讨论互学，培养思考并合作的能力。4.正确掌握文章重点词组和句型，能够进行有效仿写，最好能够自己运用句型造句。二、【自主预习】I.Fast-reading1.Lookatthepicturesonpage18andpredictwhatthe

2、passageismainlyabout:____________________________________________________2.Scanthetextandthenanswerthefollowingquestions.(1).Whoisthespeaker?(2).What’sthepassageabout?(3).Inwhichorderisthetextwritten?ⅡCareful-reading1.Finishthetrueorfalsequestions.()1.AlanTur

3、ingbuiltanAnalyticalMachinetosolveanymathematicalproblems. ()2.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing. ()3.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeople’shomes. ()4.Sincethe1970s,thecomputerwasusedbypeoplearou

4、ndtheworldthroughtheInternet. ()5.Thelargerthecomputeris,themorememoryithas.2.Jointhecorrectpartofthesentencetogether1642Computerswerebroughtintopeople’shomes.1822AlanTuringwroteabooktodescribehowcomputercouldbemade1936Computersconnectpeopleallovertheworldtog

5、ether.1960sComputerhadnewtransistorsandbecamesmaller.1970sThecomputerbeganasacalculatingmachine.NowTheAnalyticalMachinewasbuiltbyCharlesBabbage.III.Languagepoints:A.Findthephrasesinthetext.1.以……开始2.比任何人都快____________________3.被认为是……4.某人被让做某事__________________

6、5.随着时间的推移6.给某人提供某物__________________7.从那时起____________________________8.投入_________________________B.【难句剖析】1.IdevelopedveryslowlyandittooknearlytwohundredyearsbeforeIwasbuiltasananalyticalmachinebyCharlesBabbage.A.beforeconj.用以表示从句动作发生之前的时间，译法灵活。【研读思考】1.Itwil

7、lbe/taketwoyearsbeforeIgraduatefromhighschool.2.Itwon’tbe/takelongbeforehegoesabroad.3.Ittook/wasthreehoursbeforehegavemethecall.4.Itwasn’t/didn’ttakelongbeforeIwentthroughthebook.【归纳拓展】Itwillbe/take+时间段+before+一般现在时态_____________________Itwon’tbe/takelongbef

8、ore+一般现在时态_____________________Itwas/took+时间段+before+一般过去时态______________________Itwasn’t/didn’ttakelongbefore+一般过去时态______________________【实战演练】(1)It_________________________________(没过多