UNIT 5　Period 4　课时学案 单元语法讲练(Learning About Language)

Period4单元语法讲练(LearningAboutLanguage)主语从句美文诵读语法体悟①Whatweoftenoverlookisthatsuccessdoesn'tcomeeasily．Ittakestime，effort，andmostimportantly，persistence．②Thatoneshouldnevergiveupisavaluablelessonwecanlearnfrommanygreatpeople．Forexample，ThomasEdison，despitecountlessfailures，continuedhisexperimentsuntilheinventedthelightbulb．Hisstoryshowsusthatitisperseverancethatleadstogreatachievements．③Whetherwecanachieveourdreamsdependsonourdeterminationandhardwork．Ifwebelievethatwecansucceedandarewillingtoputintheeffort，thereisnolimittowhatwecanaccomplish．Inconclusion，itisessentialtoremember④thatsuccessiswithinourreachifwehavethecourageandpersistencetopursueit．①是what引导的主语从句，what在从句中作宾语；②是that引导的主语从句，从句完整不缺成分；③是whether引导的主语从句，从句完整不缺成分，但语意不完整，whether意为“是否”；④是that引导的主语从句，it作形式主语。一、主语从句的定义在主从复合句中，充当主语的从句叫主语从句。Howtheearthcameintoexistenceremainsamysterytous．地球是如何形成的对我们来说仍然是一个谜。Itworriedthewomanthathersonwasalwaysplayingcomputergames．她的儿子一直在玩电脑游戏，这让这位女士很担心。二、主语从句的引导词及其充当的成分引导词充当的成分从属连词that，whether不作任何成分连接代词who(ever)，whom(ever)，whose，what(ever)，which(ever)主语、宾语、表语、定语连接副词when，where，why，how状语Thatshesurvivedtheaccidentisamiracle．她在事故中存活下来是一个奇迹。Whethershewillcomeornotisstillaquestion．她来或不来仍是一个问题。Whatshedidisnotyetknown．她做了什么至今还不知道。Howthishappenedisnotcleartoanyone．这事怎样发生的，谁也不清楚。Whoevercomesiswelcome．不论谁来都欢迎。单句语法填空①_________theworkcanbecompletedontimeisdoubtful．②(2024·新课标Ⅰ卷)_________workedonaveterinarianseemedlikelytoworkonhispatients．③_________placetheschoolwillbebuiltinhasledtodifferentideas．④_________hegottheimportantinformationfromthecompanywasamystery．三、含主语从句和形式主语it的结构1．It＋be＋形容词(obvious，true，natural，strange，etc．)＋主语从句Itisimportantthathe(should)knowaboutthismatter．他应该知道这件事是重要的。[名师点津]在“It＋be＋形容词＋主语从句”结构中，若形容词为important/necessary/strange等，主语从句中的谓语用“(should＋)动词原形”。2．It＋be＋名词词组(nowonder，anhonour，apity，a/nosurprise，etc．)＋主语从句It'sapitythathedidn'tcome．很遗憾他没来。3．It＋be＋过去分词(said，reported，thought，expected，proved，etc．)＋主语从句Itissuggestedthatthemeeting(should)beputoff．有人建议会议延期召开。[名师点津]在“It＋be＋过去分词＋主语从句”结构中，过去分词若为suggested/ordered/required/advised等，主语从句中的谓语用“(should＋)动词原形”。4．It＋不及物动词(happen，seem，appear，remain，etc．)＋主语从句Itseemsthatitisgoingtorain．看起来好像要下雨。5．It＋及物动词＋宾语＋主语从句Itsurprisedhimwhytheycametovisithimsuddenly．让他吃惊的是他们为什么突然都来看他。单句语法填空/单句写作①Itworriedhimabit_________hismemorywasbecomingworse．②Itmakesnodifference_________hewillattendthemeetingornot．③Itisoftenthecase_________anythingispossibleforthosewhohangontohope．④我们在哪里开这个会都无所谓。____________________________________whereweshallhavethemeeting．⑤学校要求学生在学校必须穿校服。Itisrequiredthat________________________________________________atschool．四、主语从句中应注意的问题1．用陈述语序Whatwewilldonexthasnotbeendecidedyet．我们下一步要做什么还没有定下来。2．主谓要一致(1)从句作主语时，主句的谓语一般用单数形式。Wherehewillgetajobaftergraduationhaspuzzledhimmuch．毕业后到哪儿找份工作使他很困惑。[名师点津]what引导主语从句并在从句中作宾语时，主句谓语动词应与主句中作表语或宾语的名词保持一致。Whattheschoolneedsmostarebooks．这所学校最需要的是书。(2)由and连接两个或两个以上的主语从句作主语时，谓语动词用复数；由两个或多个连接词引导一个主语从句时，谓语动词用单数。Whentheywillstartandwheretheywillgohavenotbeendecidedyet．他们将在什么时候动身以及要去哪里还没定下来。Whenandwheretheywillhold