Unit5WorkingthelandDiscoverUsefulStructures导学案高中英语人教版选择性

语法一、主语从句Ⅰ.主语的构成1.Janeworkshard.(名词)2.Youareastudent.(代词)3.Theoldshouldberespected.(名词化的动词)4.Smokingisbadforyou.(动名词)5.Tofindyourwaycanbeaproblem.(不定式)6.Thatweshallbelateiscertain.(句子)Ⅱ.主语从句的定义在主从复合句中，充当主语的从句是主语从句。它是名词性从句之一，使用陈述句语序。Ⅲ.考点梳理从属连词：that（无实意，但不可省略）、whether（可在句首，可接ornot、不定式）、if（不可用于句首）连接代词:who、whoever、whom、whose、what、whatever、which、whichever.在句中不仅起连接词的作用，并充当句中的名词性成分如主语、宾语、表语。连接副词：when、where、how、why.引导名词性从句时不仅起连接词的作用，也在句中作状语。It作形式主语（为保持句子平衡，常把主语从句后置，而用形式主语it代替，it作形式）It+系动词+形容词+主语从句形容词：important,(un)likely,possible,necessary,natural,wrong等It+系动词+名词+主语从句名词：fact,idea,honour,question,pity等It+系动词+过去分词+主语从句过去分词：known,proved,said,decided,suggested,thought等It+不及物动词+主语从句不及物动词：appear,happen,seem,occur,matter等注意事项：(1)在“It+系动词+形容词+主语从句”句型中,如果形容词为necessary，important,strange,natural等时,从句谓语动词常用“(should)+动词原形”。在“It+系动词+过去分词+主语从句”句型中,如果过去分词为insist，(一坚持)；order，mand(二命令)；suggest,advise,remend(三建议)；request,require,demand,ask(四要求)时,从句谓语动词使用“(should)+动词原形”。有主语从句的句子中主句的主谓一致①Whetherthepatientwillbetakenunknown.（多数情况下用单数/复数）②Whenandwherethepatientwillbetaken_____unknown.（两个连接词引导一个主从用单数/复数）③Whenthetaskcanbefinishedandwhetherhecanhavearest________unknown.（主语为and连接的两个主从时用单数/复数）④Whathewantsmost____stayingwithhisfamily.（what在主从中做宾语时单复数由主语/表语决定）Whattheyneed_______masks(口罩).基础练习（用恰当引导词填空）1.Itislikely_____heisthewinnerofthisgame.很可能他是这场游戏的胜利者。2.______sheboughtsomanydictionariesisnotclear.=Itisnotclear_____sheboughtsomanydictionaries.不清楚她为什么买这么多字典。3.________hewasadmittedintoBeijingUniversitymadehisteachersandparentshappy.他考上了北大，这让他的老师和父母很高兴。4.It’sapity________youcan’tattendmybirthdayparty.很可惜你不能参加我的生日聚会。5._________wewillbuildanewhighschoolhasn’tbeendecided.我们是否要建新高中还没决定呢。6.__________breaksthelawshouldbepunished.不管谁违法都应该受到惩罚。7.Itisnecessary______theproblem(should)besolvedatonce.很有必要立刻解决这个问题。8.________hewasbornisunknown.他生于何时还不知道。9Itispossible_______hehasstolenthecar.很可能他偷了小车。10._______hasbrokentheglassisunknown.谁打破了玻璃现在还不知道。进阶练习1.hashelpedtosavethedrowninggirlisworthpraising.2.Itwashesaiddisappointedme.A.what;thatB.that;thatC.what;whatD.that;what3.we’llgocampingtomorrowdependsontheweather4.hesaidatthemeetingsurprisedeverybodypresent.A.WhatB.ThatC.ThefactD.Thematter5.wastoreturntoschool.A.ThatreallyinterestedhimB.WhatreallyinterestedhimC.WhichreallyinterestedhimD.Thatinteresthimreally6、hemadeanimportantspeechatthemeetingwastrue.A.ThatB.WhyC.WhatD.How7、we’llgocampingtomorrowdependsontheweather.AIfBWhetherCThatDWhere8.isknowntousallthatAmericaisadevelopedcountry.AWhichBasCWhatDIt9、WhatIsaynoneofyourbusiness.A.isB.areC.hasDhave10.It’sknowntousallaformofenergy.A.waterisB.thatwaterisC.iswaterD.thatwaterto写作一、话题词块梳理SignpostsandPhrases1.Addingmoreinformation:(添加信息)...,butalso;...and...aswell;Inaddition,...;Moreover...2.Illustrating:（举例说明）Forexample...;Forinstance...Statingaconclusion:（作出总结）Therefore,...;Hence...;Inconclusion,...Toconclude,...Allinall...Inaword...InsummaryContrasting:(对比；转折)...,but...;...,however,...;nevertheless...；Yet...Sequencing:(顺延)：...，inturn...;Emphasizing:(强调)Infact,...；Inreality,...Introducinganewtopic/thing:Asfor...;Asanalternative,...Beinwidespreaduse被广泛使用Longtermuse长期使用Beharmfulfor对...有害Damagesthbydoing通过做某事损害某物Switchto(转换到)/turnto（求助于）Through/bynaturalmeans通过自然的方法Berichin富含某物Keepsbfromdoingsth阻止某人做某事Meettheneed(of)满足（...的）需求Findasuitablesolution找到合适的解决方法Withoutadoubt,毫无疑问地Thereisnodoubtthat......事是毫无疑问的二、好句精选1.一些科学家们发现它们的长期使用有时会危害土地和人类的健康。Whatsomescientistshavefoundisthattheirlongtermusecansometimesharmboththelandandpeople’shealth.例如，农药不仅会杀死有害的细菌和虫子，也会杀死那些有益的并以此损害土壤。Forinstance,pesticidescandamagethelandbykillingnotonlyharmfulbacteriaandinsects,butalsohelpfulones.3.事实上，一些像DDT这样的农药已经被多数国家禁止了。Infact,somepesticideslikeDDThavebeenprohibitedinmostcountries.4.有机农业远远不能满足那种需求。Organicfarmingisnowherenearabletomeetthatneed.5.化学农业是一种对抗农作物疾病和增加产量的好方法。Chemicalfarmingisagoodwaytofightcropdiseaseandincreaseproduction.6.最近我们班就有机农业是否对我们有益展开了一场辩论,不同的学生有不同的看法。Recentlyourclasshashadadebateaboutwhetherorganicfarmingisgoodforus.Differentstudentsholddifferentopinions.7.最后但同样重要的是，越来越多的人要求为他们的家庭选择最自然、最营养的食物。Lastbutnotleast,moreandmorepeoplearedemandingthemostnaturalandnutritiouschoicefortheirfamily.8.俗话说，凡事都有两面性。一切事物都有优缺点。Astheoldsayinggoes,everythinghastwosides.Thereareprosandconstoeverything. 9.在我看来，没什么比健康更重要。也就是说，我们应该...AsfarasIamconcerned,nothingismoreimportantthanhealth.Thatistosay,weshould...三、根据给出的信息作文假定你是李华。最近你们班上举行了一场关于有机农业和化学农业的激烈辩论，请表达你的意见并写一篇简单的议论文论证你观点的正确性，内容包括:说明你支持有机农业还是化学农业给出至少三点论据证明你的观点注意:1.写作词数应为80左右;2.可以适当增加细节,以使行文连贯。Chemical

farmingadvantageA

great

way

to

fightcropdiseaseandincreaseproduction.disadvantagesKill

not

only

harmfulbacteriaandinsects

，but

alsohelpfulones.Affect

not

onlythecrops

but

alsotheanimalsandhumanswhodigestthem

.Crops

are

lacking

innutrition.Organic

farmingadvantagesThe

soil

is

rich

inminerals

.Keep

air,soil,waterandcropsfree

of

chemicals.Avoid

damage

totheenvironmentortopeople’shealth.disadvantageNowhere

near

able

to

meettheneed.The

writer’s

attitudeHe/She

is

for

organicfarming.

But

there

is

still

a

long

way

to

findasuitablesolution.pletetheoutlinebelow.Topicse