新教材2023高中英语Unit4AdversityandCourageSectionIILearningAboutLanguage课件新人教版选择性必修第三册

SectionⅡLearningAboutLanguage

现在完成进行时一、现在完成进行时的定义及构成【观察思考】▶Overthepastdecades,seaiceintheArctichasbeendecreasingasaresultofglobalwarming.由于全球变暖,在过去的几十年里,北极的海冰一直在逐渐减少。(动作可能会继续下去)▶Whathaveyoubeendoingallthetime?你一直在干什么?(动作可能会继续下去)▶Ihavebeenfixingthefridgeallthemorning.我一上午都在修理冰箱。(动作可能会继续下去)【探究总结】(1)定义:现在完成进行时表示某动作从过去某个时间开始,一直延续到现在,并且还有可能持续下去。(2)构成:I/We/You/They________+现在分词

He/She/It________+现在分词

答案:

(2)havebeenhasbeen(3)句式结构:①陈述句:主语+has/havebeendoing...②一般疑问句:Has/Have+主语+beendoing...?肯定回答:Yes,主语+has/have.否定回答:No,主语+hasn't/haven't.(4)与现在完成进行时连用的时间状语有:overthepastdecades,________,allthemorning,allday/month,thesedays,recently/lately,inthepastfew+时间段,since+时间点,for+时间段,等等。答案:

(4)allthetime【应用实践】单句语法填空。①—Iwonderifyoucouldgotothemovieswithme.—Oh,justleavemealone.I________________(write)acompositionallthemorningandhaven'tfinishedyet.

②Yousee,I________________(shop)alltheafternoonandIdon'tseemtohavedoneanything.

③—We'vespenttoomuchmoneyrecently.—Well,itisn'tsurprising.Ourfriendsandrelatives________________(come)aroundallthetime.

答案:

①havebeenwriting②havebeenshopping③havebeencoming二、现在完成进行时的用法【观察思考】▶Ithasbeenrainingsincelastweek.自从上周以来一直下雨。(强调动作的过程)▶Youhavebeencoughingalotlately.你最近一直咳嗽。(强调动作的反复性)▶Toomuchhasbeenhappeningtoday.今天真是个多事的日子啊。(感慨)▶Hehasalwaysbeenstudyinghard.他学习一直很刻苦。(赞许)【探究总结】(1)表示动作从过去某时开始一直持续到现在,甚至将来,强调动作的_________。

(2)表示从过去到现在的一段时间内反复进行的动作,强调动作的_________。

(3)常表示_________、_________等感情色彩。答案:

(1)过程(2)反复性(3)感慨;赞许【应用实践】根据汉语提示完成英语句子。①Mary__________(一直去)towritingclasseseverynightsinceJuneandthecoursewillendthisweek.

②Sincethetimehumankindstartedgardening,we________(一直尽力)tomakeourenvironmentmorebeautiful.

③Themanager__________(一直在告诉)theworkershowtoimprovetheprogrammesince9:00a.m.

答案:

①hasbeengoing②havebeentrying③hasbeentelling现在完成时和现在完成进行时的区别(1)现在完成时强调动作的完成,而现在完成进行时强调动作的延续。(2)在表示