2108人教版 必修六 Unit 5 The power of natureLearning about language（共56张PPT）.ppt

unit5thepowerofnaturelearningaboutlanguage discoveringusefulwordsandexpressions1replacetheunderlinedpartswithawordorphraseofsimilarmeaningfromthetext rewritethesentenceifnecessary wereceivedthewrittensetofquestionsfromthecompanyastheywereeagertofindoutouropinionontheirproducts thequestionnaire 2 thecardrewupnexttothesideofourcarandthedriverwavedtous 3 thescientistswerestudyingcarefullytoseehowsuccessfultheexperimentis alongside thescientistswereevaluatingtheexperiment 4 imovedcarefullyoverthefallenrocksandreturnedtothecar 5 ithinktheboyislikelytoachievesuccessinpainting butheneedstraining 6 theteacherwasgiventhejobbecausehewasthebestcandidate mademyway haspotential appointed 7 itiscertainthatthefactorywillgreatlyraisetheirefficiencyiftheyhavemodernmachinesandtools 8 charleslookedatthedrawingthatshowshowthemachineworksandknewimmediatelywhatwaswrongwithit equipment diagram 2completetheparagraphwiththewordsintheboxinthecorrectforms burntothegroundabsolutevolcanoeruptionwavefountainashlavaerupt theeruptionofmountvesuviusin79adtookthepeopleofpompeiibysurprise theyhadalwaysknownthatthemountainwasa butithadbeenquietforsolongthatnobodysawitasathreat whenthevolcanofinallydid volcano erupt itwassoquickandsoseverethatthetownwassooncoveredin and awritercalledpliny whowasthereduringthe describedhowlavawasthrownintotheairlikea afteritfelltoearth itturnedinto oflavawhichtravelleddownthemountain ash lava eruption fountain waves fasterthanpeoplecouldrunaway itwasan disasterforthosewhocouldnotescapeintime manyofthewoodenhousesandbungalowsinpompeiiwere butthestonehousesremainedundertheashuntiltheywererediscoveredduringthe20thcentury absolute burnedtotheground revisingthe ingform grammar 本课时重 难点 重点 动词 ing形式的作用 动词 ing形式在做状语时的作用难点 动词 ing形式的一般式与完成式的区别 说出下列动词的现在分词形式 work sleep study take make dance cut put begin lie tie die 观察下列例句 思考划线部分作用 1 thisisaninterestingbook 2 themansittingbythewindowisourmathsteacher 3 seeingtheteacherenteringtheroom thestudentsstoodup 4 isawtheboywalkingonthestreetyesterday 5 playingfootballishisfavotiresport 6 ididn tstopworkinglastnight 7 myworkisteachingenglish 定语 定语 状语 宾补 主语 宾语 表语 归纳总结 动词 ing是 中的一种 单独使用时 能在句中做除 之外的任何其他句子成分 如 主语 宾语 表语 定语 状语 宾补等 在语态上 动词 ing表示 主动 被动的动作 在时间上 动词 ing一般表示 正在进行 已经完成 的动作 动词非谓语形式 谓语 主动 正在进行 lookingcarefullyattheground imademywaytotheedgeofthecrater havingexperiencedquiteafewearthquakesinhawaiialready ididn ttakemuchnotice the ingformusedasanadverbial 一 动词 ing形式作状语 二 动词 ing形式的完成式 例句 havingbeen writteninhaste thebookhassomefaults 这本书因仓促写成 所以有些缺憾 观察下列2个句子 体会havingdone与doing的不同用法 1 havingwrittentheletter johnwenttothepostoffice 2 seeingthebeautifulsight thechildrenfeltexcited 总结 v ing doing havingdone 表动作有先有后 表动作同时发生 一般式 完成式 exercise1 1 thechildtobed shebegantocorrectthestudents homework a sendingb beingsentc sentd havingsent2 becarefulwhen while cross thestreet 3 听到这个消息 wegotexcited crossing hearingthenews d 举一反三 v ing doing havingdone 一般式 完成式 beingdone havingbeendone 主动 被动 exercise2 1 她被蛇咬了三次后 她看见蛇后就害怕 2 正在进行的那个会议非常重要 havingbeenbittenbythesnakeforthreetimes shefeelsfrightened themeetingbeingholdnowisofgreatimportance whenseeingthesnake 1 himtheanswerseveraltimes ididn tknowwhetherhecouldunderstand 2 theanswerseveraltimes hestillcouldn tsolvetheproblem havingtold havingbeentold exercise3 用havingbeentold havingtold填空 主动 被动 归纳 主句主语为动作的发出者 主句主语为动作的承受者 1 分词 短语 作状语时 其逻辑主语必须与句子的主语一致 如果不一致 必须用独立主格结构来表示 也就是在分词前面加上它的逻辑主语 三 使用 ing形式需注意的几个问题 comparingallthegreatpeoplewitheachother you llfindthattheyhavemuchincommon findinghercarstolen shehurriedtoapolicemanforhelp thetrainhavinggone wehadtowaitanotherday 分析 前两例中 ing形式的逻辑主语均为主句的主语 最后一例中havinggone的逻辑主语是thetrain mywifehadalongtalkwithsally explainingwhyshedidn twantthechildrentoplaytogether 我妻子与莎莉谈了很长时间 解释她为什么不想让孩子们在一起玩 分析 现在分词explaining是句子主语mywife做的动作 它们之间是主动关系 即explaining的逻辑主语 就是句子的主语mywife 一般来说 ing形式表示主动 进行 过去分词表示被动 完成 试比较 theenemyfledinapanic leavingbehindalotofdeadbodiesandweapons defeatedandfrightened theenemyfledinapanic 2 与过去分词作状语的区别 分析 前一例中的 ing形式短语在句子中作伴随状语 它与其逻辑主语theenemy之间为主动关系 后一句中的过去分词defeated和frightened表原因 它与其逻辑主语theenemy之间为被动关系 3 分词短语做状语时 前面可以加上连词或介词 但是分词短语和句子之间不能用并列连词 如but and 因为并列连词接的是两个并列成分 而分词短语只是全句的一个状语部分 分词和主句之间可用逗号 whenseeingfromthetopofthehill youcanenjoythewholebeautyofthiscity 误 havingbeentoldmanytimes buthestillcouldn tunderstandit 正 hewastoldmanytimes buthestillcouldn tunderstandit 或havingbeentoldmanytimes hestillcouldn tunderstandit 4 ing的一般式和完成式现在分词都可以表示先后接连发生的动作 在可能引起误解的场合应该用完成式现在分词表示先发生的动作 如 havingbrushedhisteeth mr browncamedownstairsforbreakfast 布朗先生刷过牙 就下楼来吃早饭 此句如写成 brushinghisteeth mr browncamedownstairsforbreakfast 可能指 边刷牙 边下楼 comingintotheroom heputdownhisbag hecameintotheroomandputdownhisbag 他走进房间 放下提包 openingthedrawer hetookouthiswallet heopenedthedrawerandtookouthiswallet 他打开抽屉 拿出钱包 notfearingthefire thechildtouchedandgotafingerburnt 小孩儿不知道怕火 用手去摸 把手指烫了 notknowinghowtofindthesubway iaskedapolicemanforhelp 我不知怎样找到地铁 就去找警察帮忙 5 分词的否定形式是在分词短语前面加上not never等否定词构成 如 高考链接1 2004广东 theprogramme theyhavetostaythereforanothertwoweeks a notcompletingb notcompletedc nothavingcompletedd havingnotcompleted c 2 moreandmorepeoplearesigningupforyogaclassesnowadays advantageofthehealthyandrelaxationbenefits 2005上海 a takingb takenc havingtakend havingbeentaken a 3 carefully thepatientleftthehospital a havingexaminedb beingexaminedc examiningd havingbeenexamined4 manytimes buthestillcouldn tunderstandit a havingbeentoldb thoughhehadbeentoldc hewastoldd havingtold d a 1 youcan tcatchme janetshouted away 2005全国 a runb runningc torund ran 例题解析 b 解析 答案b runningaway在此作shouted的伴随状语 由janet发出这一动作 2 thestormleft alotofdamagetothisarea 2005全国 a causedb tohavecausedc tocaused havingcaused d 解析 答案d 题意 暴雨过去了 只留下给这一地区造成的巨大损害 由上下文逻辑意义看 此处应表示自然而然的结果 故用现在分词作结果状语 3 inthequeueforhalfanhour tomsuddenlyrealizedthathehadlefthiswalletathome 2004北京 a towaitb havewaitedc havingwaitedd tohavewaited c 解析 答案c 此处为现在分词的完成式作时间状语 表明该动作发生在realized之前 4 suchheavypollutionalready itmaynowbetoolatetocleanuptheriver a havingsufferedb sufferedc tosufferd suffered a 解析 答案a 由already提示 分词动作发生在谓语之前 故须用分词的完成式 5 thesecretaryworkedallnightlong alongspeechforthepresident a toprepareb preparingc preparedd waspreparing b 解析 答案b 非谓语动词充当伴随状语 与主语thesecretary是主动关系 因此用v ing形式 每空填一词 使该句与所给句子的意思相同 1 becausehewasill hedidn tgotoschool hedidn tgotoschool 2 whenshewaswalkingalongthestreetoneday shemetanoldfriendofhers thestreetoneday shemetanoldfriendofhers beingill walkingalong 3 ifitissunny we llgoforapicnictomorrow we llgoforapicnictomorrow 4 aftershehadfinishedherhomework thelittlegirlbegantowatchtv herhomework thelittlegirlbegantowatchtv 5 becausetheyhadbeenwarnedbytheteacher theydidn tmakesuchmistakes bytheteacher theydidn tmakesuchmistakes itbeingsunny havingfinished havingbeenwarned 6 asitwasaholiday alltheshopswereshut alltheshopswereshut 7 ifihadbeengivenalongertime icouldhavedoneitbetterthanplanned alongertime icouldhavedoneitbetterthanplanned 8 afterigothome ifoundmybooksmissing ifoundmybooksmissing havinggothome havingbeengiven itbeingaholiday 9 whenhewasstillasmallboy hewenttofrancewithhisfather hewenttofrancewithhisfather 10 whenautumncomes swallowsgotothesouth swallowsgotothesouth being a small boy autumncoming 将每组中的两个句子组合成一个拥有动词 ing形式的句子 1 alicesawavolcanoeruptinginthemorning shefeltexcitedandcouldn tfallasleepatnight havingseenavolcanoeruptioninthemorning alicefeltexcitedandcouldn tfallasleepatnight 2 iknewthesightisimpress