Unit-7Whats-this-for

Unit7What’sthisfor?BrainstormmachinesandmoderninventionsTelephone,cellphone,creditcards,TV,CDs,laptop,computer,videogames.MatchCellphonePocketcalculatorMicrowaveovenWorldwidewebTelephoneansweringmachine19451949197019791989Whatdoyouuseyourcomputerfor?PlaygamesBuythingsDoresearch…InfinitivesandgerundsforusesandpurposesInfinitives:To+verb(do)例:Iusemycomputertosende-mails.我用电脑来玩游戏Iusemycomputertoplaygames.Gerunds:For+V-ING(doing)例:Iusemycomputerforsendinge-mails.我用电脑来玩游戏Iusemycomputerforplayinggames.注：语法部分第二句为被动语态，会在unit11学习到Computersareoftenusedtopaybills.Computersareoftenusedforpayingbills.Beusedfor/to被用来做某事ExerciseSatelliteRobotDNAfingerprintingCD-ROMTransmitTextmessageCriminal卫星机器人DNA指纹图谱/分析只读光盘驱动器传输短信犯罪WordpowerDiscdriveGeek,technophileHackerMonitorMouseSurfthenetHardware光盘驱动技术宅黑客显示器鼠标上网硬件WordpowerPeoplewhoare‘into’computersTypesofhardwareGeekHackertechnophileWhizDiskdriveKeyboardMonitorMouseFunthingstodowithacomputerThingstodowithmouseBrowseWebsitesPlaygamesScanphotosSurfthenetCutandpasteDouble-clickDraganddropHighlighttextConversationWhoownsthecellphone?Whoaretheycalling?What’sthefirstthingtodo?Whatshouldthewomanpress?ImperativesandinfinitivesforgivingsuggestionsBesureto确定Don’tforgetto别忘了Tryto尝试Trynotto试着别Makesureto确保Verb.(动词原形)