高中英語人教版必修三教學(xué)案：Unit-4-Section-3-含答案

[語法初識]原句感知自主探究①Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.②Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.③Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.④Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.⑤Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.⑥Sowhetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.(1)以上各句皆為主從復(fù)合句，句中黑體部分為名詞性從句作主語，稱之為主語從句。(2)what引導(dǎo)主語從句，what在從句中作表語(句①)，主語(句③)，及賓語(句⑤)。(3)whether引導(dǎo)主語從句，意為：是否(句②⑥)。(4)可用it作形式主語，真正的主語為名詞性從句(句④由that引導(dǎo)主語從句)。[語法剖析]語法點(diǎn)一定義在主從復(fù)合句中充當(dāng)主語的從句即為主語從句。Whatmadeherhappywasthatshewonthegameinsuchanimportantmatch.令她高興的是在這么重要的比賽中她獲勝了。ItisdecidedthatthemeetinghasbeenputofftillnextMonday.已經(jīng)定下來將會議推遲到下周一了。語法點(diǎn)二主語從句的連接詞及其句法功能1.連接詞that和whether/if(1)that在從句中不充當(dāng)任何句子成分，本身無任何意義，只起連接作用，但不可省略。Thatweareinvitedtotheconcertthiseveningisgoodnewstous.我們被邀請去參加今晚的音樂會，這對我們來說是個好消息。(2)whether/if在從句中不充當(dāng)任何句子成分，起連接作用，意為“是否”，不可省略。Whethertheplanwillbecarriedoutisstillunknown.＝Itisstillunknownif/whethertheplanwillbecarriedout.這個計(jì)劃是否會實(shí)施還不知道。[點(diǎn)津]whether引導(dǎo)的主語從句既可放在句首也可放在句尾，但if引導(dǎo)的主語從句只能放在句尾，前面需用it作形式主語。即時演練1完成句子①That_she_could_come_to_help_usmadeusveryhappy.她能來幫助我們使我們很高興。②Whether_he_can_finish_his_task_on_timeisofgreatimportance.他能否按時完成任務(wù)非常重要。2．連接代詞(who,whose,whom,what,which,whichever,whoever,whomever,whatever等)。連接代詞引導(dǎo)主語從句，在從句中可以作主語、賓語、表語或定語。Whowillgototheconcertisunknown.不知道誰會去聽音樂會。Whoeverdidthisjobmustberewarded.無論誰做了這項(xiàng)工作一定要得到酬謝。Whatthelecturersaidisofgreatvalue.演講者所講的非常有價(jià)值。[點(diǎn)津]who引導(dǎo)的主語從句表示一件“事情”，而whoever引導(dǎo)的主語從句指“人”。3．連接副詞(when,where,how,why等)。連接副詞引導(dǎo)主語從句并在從句中作狀語。Whenwewillhaveameetingisanimportantquestion.我們何時舉行會議是個重要的問題。Howtheywillsolvetheseriousproblemhasn'tbeendecided.他們將怎樣解決這個嚴(yán)重的問題還沒有決定。[點(diǎn)津]名詞性從句引導(dǎo)詞的確定步驟：(1)分析句式結(jié)構(gòu)，明確名詞性從句在句中的功能；(2)明確名詞性從句所表達(dá)的意義；[鏈接高考]單句語法填空1．(2016·江蘇高考)Itisoftenthecasethatanythingispossibleforthosewhohangontohope.2．(2016·北京高考)Yoursupportisimportanttoourwork.Whateveryoucandohelps.3．(2015·江蘇高考)WhereLiBai,agreatChinesepoet,wasbornisknowntothepublic,butsomewon'tacceptit.4．(2015·北京高考)Howweunderstandthingshasalottodowithwhatwefeel.5．(2014·大綱版全國卷)ExactlywhenthepotatowasintroducedintoEuropeisuncertain,butitwasprobablyaround1565.6．(2014·陜西高考)Whenthedelayedflightwilltakeoffdependsmuchontheweather.7．(2014·天津高考)Ithinkwhatimpressesmeabouthispaintingisthecoloursheuses.8．(2014·北京高考)Somepeoplebelievewhathashappenedbeforeorishappeningnowwillrepeatitselfinthefuture.9．(2013·北京高考)Whatmakesthebooksoextraordinaryisthecreativeimaginationofthewriter.10．(2013·四川高考)Whatyousaidatthemeetingdescribesabrightfutureforthecompany.[針對演練]Ⅰ.句型轉(zhuǎn)換1．Hecouldn'tunderstandthat,asateacherofChinese,hehadbeenaskedtoteachhistory.→Whathecouldn'tunderstandwasthat,asateacherofChinese,hehadbeenaskedtoteachhistory.2．Whenandwheretogoonabusinesstriphasn'tbeendecided.→Ithasn'tbeendecidedwhenandwheretogoonabusinesstrip.3．Wedon'tknowwhowilltaketheplaceofMrSmith.→WhowilltaketheplaceofMrSmithisn'tknowntous.4．MyunclehappenedtobeoutwhenIvisitedhimonSunday.→IthappenedthatmyunclewasoutwhenIvisitedhimonSunday.5．Whethertheoldcouplewilllikethetripabroadornotremainstobeseen.→Itremainstobeseenwhethertheoldcouplewilllikethetripabroadornot.6．Itmakesnodifferencehowyougetthere.→Howyougettheremakesnodifference.7．Literarybooks,especiallythosebyfamouswriter,interestsmemost.→Whatinterestsmemostisliterarybooks,especiallythosebyfamouswriters.8．Ourdesireisthatyoushouldprovidesomemoneytofundourprogram,aswellasofferussomepracticalsuggestions.→It'sourdesirethatyoushouldprovidesomemoneytofundourprogram,aswellasofferussomepracticalsuggestions.9．Everyonepresentwasinterestedinhowhemanagedtosurviveintheforest.→Howhemanagedtosurviveintheforestinterestedeveryonepresent.10．Toourexcitement,hewillattendthemeeting.→Thathewillattendthemeetinghasexcitedallofus.Ⅱ.完成句子1．That_drought_affected_the_area_so_deeplyhasmadepeopleworried.干旱嚴(yán)重影響了這個地區(qū)，這讓人擔(dān)憂。2．Itisstillunknownif/whether_the_film_will_be_released．這個電影是否會上映還不知道。3．Itisorderedthattheconstructionofthesportsgroundshould_be_completed_next_week．命令操場建設(shè)下周完成。4．What_role_he_will_play_in_this_activityhasn'tbeendecided.他在這次活動中將起什么作用還未定下來。5．What_she_is_buying_nowaresomemagazines.現(xiàn)在她正在買的東西是一些雜志。6．Itisclearthat_somebody_came_to_visit_him_just_now．很明顯剛剛有人來拜訪過他。7．When_the_dispute_in_this_area_will_stoppuzzlesmanypeople.這個地區(qū)的爭執(zhí)(dispute)何時結(jié)束讓很多人困惑。8．Itisapitythat_the_young_boy_has_to_drop_out_of_school_to_help_his_fathertoraisehisfamily.遺憾的是小男孩為了幫父親養(yǎng)家只好輟學(xué)。9．Why_she_didn't_attend_the_wedding_partyisthatshehadaheadache.她沒有出席婚禮宴會的原因是她頭痛。10．Itisnotimportantwho_should_attend_the_meetinginsteadofhim.誰將代替他出席會議并不重要。Ⅲ.短文改錯AfunnythinghappenedmysisterTinalastmonth.InJapan,peopleusuallydon'twearhisoutdoorshoesinthehouseoratschool,andalotofbuildingshadplacesforshoes.Herschoolhasaspecialplaceforshoes,either.It'sashoe