选择性必修1 Unit 5 语法教学设计：《主语从句》

选择性必修1Unit5语法教学设计：《主语从句》学习目标（LearningGoals）识别并归纳主语从句的定义、功能及连接词（连接词、连接代词、连接副词）的使用规则。理解主语从句的三大核心规律（形式主语用法、陈述语序要求、主谓一致原则）。能在书面表达中准确运用主语从句完成语境填空、语篇补全及句子翻译任务。课前预习（PreviewBeforeClass）阅读以下语篇，划出所有主语从句：Supermarketssellvegetablesgrownwithchemicalfertilisers,andtherehavebeenplaintsabouttheseproducts.Thattheyhaveanattractiveexternalappearanceisobvious.However,whatisconcerningistheirlowernutritionalvalueanddiminishedflavour.Nowthatbothgrandparentshaveretiredfromurbanwork,howtheywillarrangetheirretirementlifehaseakeydecision.Whethertheycanmaintainahealthyandfulfillinglifestyleistheirprimaryconsideration.Therefore,theyhavedecidedtomovetothecountryside,wheretheycanliveagreenandnaturallife.课堂学习（InClassLearning）Step1导入（Leadin）找出下列句子中的主语，思考主语的构成形式：Janeworkshard.Youareastudent.Twowillbeenough.Theelderlyshouldberespected.Smokingisharmfultohealth.Tofindyourwayinthedarkcanbeachallenge.Whatshementionedinthereportisnotyetverified.思考与填空主语：句子所说明的人或事物，通常位于句子_____（句首）。主语从句：在复合句中充当_____（主语）的从句（即从句具备名词性功能，相当于一个名词作主语）。Step2知识点呈现（Presentation）Observe1连接词的选择（that/whether）分析下列例句，总结连接词that和whether的用法：Thatyouhavekeptyourpromiseisbeyonddoubt.Whethertheprojectwillbelaunchedontimeisstillunderdiscussion.结论1（Conclusion1）that在主语从句中____（无）实际含义，_______（不充当）句子成分，_____（不可）省略（注：位于句首时绝对不可省略）。whether在句中_______（不充当）句子成分；含义为“_______（是否）”，_____（不可）省略，可与ornot直接连用。即时练习（Practice）用that、whether或if填空（注意if不可引导句首主语从句）：Itdoesn’tmatter___________hewillattendthemeetingornot.________thedataisaccurateremainsdoubtful.Itwasuncertain___________theexperimentwouldsucceed.________shecanofferustechnicalsupportmadeusconfident.Observe2连接代词的选择（who/what/which等）分析下列例句，总结连接代词的用法：Whattheteamneedsmostissufficientfunding.Whichplanwillbeadoptedhasnotbeendecidedyet.Whowillbeappointedasthecoordinatorarousedeveryone’scuriosity.Whoevercanmeettherequirementsiseligibletoapplyfortheposition.结论2（Conclusion2）引导主语从句的连接代词主要包括：表示“谁”：______（who）表示“无论谁”：________（whoever）表示“什么”：______（what）表示“无论什么”：__________（whatever）表示“谁的”：_______（whose）表示“哪一个”：_______（which）表示“无论哪个”：__________（whichever）此类连接代词在从句中可充当________（主语）、（宾语）、表语或（定语）。即时练习（Practice）用适当的连接代词填空：___________weneedtoconfirmfirstiswhichrouteismoreefficient.___________regionhewillbeassignedtoworkinneedsfurtherdiscussion.___________surprisesmemostishisremarkableprogressinashorttime.___________iswillingtoparticipateinthevolunteeractivitycanregisteronline.Observe3连接副词的选择（when/where/why/how）分析下列例句，总结连接副词的用法：Whenthenewpolicywillbeimplementedworriesmanyentrepreneurs.Wheretheinternationalconferencewillbeheldhasnotbeenannounced.Whyshedeclinedtheinvitationremainsamystery.Howtheyovercamethetechnicaldifficultiesisworthlearningfrom.结论3（Conclusion3）When在主语从句中充当_____________________（时间状语）。Where在主语从句中充当_____________________（地点状语）。Why在主语从句中充当_____________________（原因状语）。How在主语从句中充当_____________________（方式/程度状语）。即时练习（Practice）用适当的连接副词填空：___________themanagerwasabsentfromthemeetinghasnotbeenexplained.___________hemanagedtosolvetheplexprobleminterestedalltheparticipants.___________electricvehicleswillbeparkedinthedowntownareaisapressingquestion.Exactly___________thenewtechnologywasintroducedintotheindustryisuncertain,butitwasprobablyaroundfiveyearsago.Step3核心规律探究（KeyRulesExploration）规律1：主语从句过长时的处理方式——形式主语it的使用当主语从句结构复杂、长度较长时，为避免句子“头重脚轻”，常用it作形式主语，将真正的主语从句置于句末。常见结构分类如下：strange...形容词（necessary/important/natural/strange...）+that从句（从句常用虚拟语气：should+动词原形，should可省略）▶Itisnecessarythattheplan(should)berevised.wonder...名词（apity/afact/ashame/awonder...）+that从句▶It’sapitythatwemissedthedeadline.decided...过去分词（suggested/required/advised/decided...）+that从句（从句常用虚拟语气）▶Itissuggestedthatthemeeting(should)bepostponed.out...及物动词（seems/appears/happens/turnsout...）+that从句▶Itseemsthatthesituationisimproving.It+其他结构（surprises/disappoints/interestssb.）+特殊疑问词引导的主语从句▶Itsurprisedeveryonehowquicklysheadaptedtothenewenvironment.规律2：主语从句的语序要求主语从句必须使用陈述语序（连接词+主语+谓语），不可使用疑问语序。判断下列句子正误（在括号内填T/F）：Itisn’tclearwhetherhewillaccepttheofferornot.()Itisn’tclearwhetherwillheaccepttheofferornot.()规律3：主语从句的主谓一致原则主语从句作主语时，谓语动词的单复数需遵循以下原则：单个主语从句作主语，谓语动词常用单数；两个由and连接的并列主语从句表示两个不同概念时，谓语动词用复数；连接代词what/which/whoever等引导的主语从句，谓语动词的单复数由从句所指代的内容（单数/复数）决定。即时练习（Practice）用be动词的适当形式填空：Whethertheproposalwillbeapproved______(be)unknown.Whenandwherethetrainingwillbeheld_____(be)tobeannounced.Howthetaskwillbepletedandwhetheradditionalresourcesareneeded________(be)underdiscussion.(1)Whathevaluesmost_______(be)honestyandresponsibility.(2)Whattheteamneeds_______(be)moreprofessionalguidance.Step4总结（Summary）连接词：that（无义，不充当成分，不可省略）、whether（表“是否”，不充当成分，不可省略）；连接代词：who,whoever,what,whatever,whose,which,whichever（在从句中作主语、宾语、表语或定语）；连接副词：when,where,why,how（在从句中作时间、地点、原因、方式/程度状语）；核心规律：规律1：从句较长时，用it作形式主语，真正主语从句置后，避免头重脚轻；规律2：从句必须使用陈述语序，禁止使用疑问语序；规律3：主谓一致需根据从句数量或指代内容判断（单个从句用单数，并列不同概念用复数，连接代词引导从句看指代内容）。Step5巩固练习（ConsolidationExercises）Exercise1连词填空（Fillintheblankswithappropriateconjunctions）Itgoeswithoutsaying__________thedeclineofextendedfamiliesandtheprevalenceofnuclearfamiliesareaproductofsocialdevelopment.__________touchedtheinstructorsmostwasthestudents’enthusiasmandsenseofresponsibility.It’sunclear__________thetwosidesoftheplanetaresodifferent;thecollectedsamplescouldprovidesomecluesandarelikelytoyieldinvaluablescientificfindings.__________Iadmiremostabouttraditionalartistheprofoundculturalconnotationitcarries.Itispossible__________longtermexposuretothissubstancemaycausehealthrisksinhumans.Exercise2语篇填空（ClozeTest）1._____2._____3._____5._____standardizedexaminationnextyear,1._____theexamwillbeheldinJuneisconfirmed,but2._____youwilltakeitremainsunclear—perhapsatadesignatedtestcenteroutsideyourcity.Currently,3._____