人教版高中英语必修第二册同步训练UNIT2 Section Ⅲ Discovering Useful Structures课件.ppt

SectionⅢDiscoveringUsefulStructures课前·基础认知课堂·重难突破随堂训练课前·基础认知词汇认知重点单词1.deern.鹿?2.kangaroon.袋鼠?3.insectn.昆虫?4.netn.网adj.净得的;纯的?5.neighbourhoodn.临近的地方;街区?词汇拓展reducevt.减少→reductionn.降低;减少?重点短语1.dueto由于;因为?2.rightnow现在,目前?3.evenworse更为糟糕地?语法图解现在进行时的被动语态探究发现阅读下列句子,注意句中的画线部分1.Thecarisbeingcleaned.?2.Thewindowofherroomisoftenbeingbroken.?3.Someanimalsarenotbeingprotectedwellenough.?4.Isthisbridgebeingbuiltnow??5.Howmanytreesarebeingcutdownrightnow??现在进行时的被动语态由be+being+及物动词-ed形式构成,助动词be有人称和数的变化,即am,is,are。现在进行时与often等频率副词连用时,不表示动作正在进行。?课堂·重难突破词汇精讲【教材原文】Itisreportedthatlivingspacesforwildlifeare(reduced/beingreduced)duetothecuttingoftrees.(page18)据报道,野生动物的生存空间因为砍伐树木而减少了/正在减少。考点一reducevt.减少;缩小(尺寸、数量、价格等)reducesthfrom...to...某物从……减少/降低到……reducesthby...把某物……减少/降低了……reduce...to...将……概括为(或简化为)……reductionn.减少;缩小;降低语境领悟(1)Thenumberofemployeeswasreducedfrom40to25.雇员人数从40减少到了25。(2)Costshavebeenreducedby20%overthepastyear.过去一年,成本支出已经减少了20%。考点二dueadj.由于;因为;到期;预期dueto由于;因为beduetodosth预定/计划(做)某事beduetosb应支付/给予/归于某人bedueforsth应用某物;应得到某物语境领悟(1)Wepaiddueattentiontotheproblem.我们对此问题给予了应有的注意。(2)ThebillwillbeduenextMonday.这张账单下星期一到期。(3)ThetrainisduetoleaveforShanghaiat8oclock.这趟列车定于8点出发去上海。(4)Hissuccesswasduetothefactthathehadbeenworkinghard.他的成功是由于他一直勤奋地工作。学以致用单句语法填空(1)Thepriceoftheshirtwasreducedfrom$50__________$35inthesale.?(2)Wecanreducetheproblem____________twomainissues.?(3)Thereisaslight____________(reduce)incosts,soitispossiblethatwellmakemoreprofitsthisyear.?totoreduction完成句子(4)下一辆公共汽车将在半个小时以后到达。Thenextbus______________________________inhalfanhour.?(5)他们因为糟糕的天气来晚了。Theycamelate____________thebadweather.?isduetoarrivedueto语法精析现在进行时的被动语态一、用法1.现在进行