nit 4 Information technology Lesson 2 Apps课件-高中英语北师大版（2019）必修第二册

Lesson2APPSActivateandshareWhatappsdoyouoftenuse?Whatdoyouusethemfor?Usethephrasesbelowtohelpyoumakenotes.tobookticketstobookaccommodationtoorderfoodtofinddirectionstolearnalanguagetochecktheweathertolookforpopularrestaurantstosubscribetonewspapersandmagazinesListenforunderstandingBeforelisteningtoaninterviewwithanappdeveloper，readandanswerthequestions.Usethekeywordstohelpyou.Thenlistenandcheck.1

Whyareappssopopular?2

Whatarethedifficultiesindevelopinganapp?3

Whatarethelatesttechnologiesusedinapps?tobecomepowerfultobeusefultomakelifeeasiertosolvereal-worldproblemstoenjoylearningactivitiestofindwhatpeopleneedtousethelatesttechnologyVR（VirtualReality）AR（AugmentedReality）MR（MixedReality）SkillBuilderListeningforKeyWordsListeningforkeywordshelpsyouunderstandtheconversationbetterandfindtheanswerstoquestionsmorequickly.·Beforelistening，readthequestionscarefully.·Whilelistening，payattentiontothewordsrelatedtothequestions，e.g.popular，difficulties，latesttechnologies.·Listenforwordsthatarestressed.1

Whyareappssopopular?2

Whatarethedifficultiesindevelopinganapp?3

Whatarethelatesttechnologiesusedinapps?1Appsarepopularbecausetheyareusefulandmakelifeeasier.2Thedifficultyisfindingoutwhatpeopleneedandsolvingreal-worldproblems.3ThelatesttechnologiesusedareVR（VirtualReality），AR（AugmentedReality）andMR（MixedReality）.Listenagain.Completetheinformation.AppsGeneralfunctionsfindpopularrestaurantscallfortaxisfinddirectionstodifferentplacesAppsUsesofeducationalappsallowstudentstochoosetheironlineteachersandsubjectsaccordingtotheirpersonalinterestsandneedsensurethatstudentscanallenjoythesamelearningmaterialsAppsDifficultiesindevelopinganappfindoutwhatpeopleneedsolvereal-worldproblemsAnswerthequestionsusingtheinformationinActivity3tohelpyou.1

Whataresomegeneralfunctionsofapps?2

Whatcanstudentsdowitheducationalapps?3

AccordingtoLiXing，whatarethedifficultiesindevelopinganapp?4

Ifyouareabletodevelopanapptosolveareal-worldproblem，whatproblemwouldyouliketosolve?Andhow?1.Generalfunctions：findpopularrestaurants，callfortaxis，finddirectionstodifferentplaces，andsoon.2.Studentscanchoosetheironlineteachersandsubjectsaccordingtotheirpersonalinterestsandneedsoneducationalapps.3.Thedifficultthingsaboutdevelopinganapparefindingoutwhatpeopleneedandsolvingreal-worldproblems.Listenandimitate.CompletetheTalkBuilder.Askingforhelp：1Canyouhelpmeout

2Ican’tfigureouthowto

3Canyoudomeafavour4WouldyoubeabletoOfferinghelp：1Doyouneedhelp

2Icanhelpyou

3HowmayI

4Letme

5CanIassistyouwithwhilelistening“连词+分词（短语）”结构，是状语从句whileyouarelistening的省略形式。教材原句p.12Whilelistening,payattentiontothewordsrelatedtothequestions...whiledoing构成的省略句在时间、条件、让步、方式状语从句中，如果从句主语与主句主语一致或从句主语是it，且从句谓语中含有be动词时，可以将从句中的主语和be动词一起省略，构成“连词+分词/形容词/介词短语/名词（短语）”结构。【记忆口诀】主从主语一致时，从句含有be动词；为了简练皆省去，剩下表语或分词。Whilewalkinginthepark，Isawavarietyofbeautifulflowers.在公园散步时，我看到了各种各样美丽的花。Ifinvited，Iwillattendtheparty.如果被邀请，我将参加这次聚会。Ifpossible，Iwillpayavisittothegreatpalacetomorrow.如果可能的话，我明天将去参观那个巨大的宫殿。单句语法填空（1）While

（compete）withhisteammates，hehurthisleg.（2）If

（accept）forthejob，you’llbeinformedsoon.（3）Therearesomehealthproblemsthat，whennot

（treat）intime，canbecomebiggeroneslateron.competingacceptedtreated完成句子（4）当被问及为什么没参加这次赛跑时，他什么也没说，只是微笑了一下。

whyhedidn’ttakepartintherace，hesaidnothingbutsmiled.（5）