學必求其心得，業必貴于專精學必求其心得，業必貴于專精學必求其心得，業必貴于專精課堂探究1．Asaresultofthisevent，agreatdustcloudformedintheskyblockingoutthesunlight.正因為這一事件，天空中形成了一團巨大的塵云，擋住了陽光。考點：blockout擋住，遮住（光線和聲音)；忘掉，抹去（不愉快的事）①Thevolcanicashblockedoutthesun。火山灰擋住了太陽。②Anuglybuildingblockedouttheviewfromthewindow.一座難看的大樓把窗外的景物遮住了。③Itrytoblockouttheunpleasantexperience.我盡力去忘記那段不愉快的經歷。考點延伸閱讀下列句子，指出block的詞組及含義。④Variousbarricadesblockoffallthemainstreetsofthecity。各種路障封鎖住了城里所有的主要道路.詞組：____________含義：____________⑤Thetrafficisveryheavyandhasbeguntoblockupthestreets。交通很擁擠,已經開始把街道阻塞了。詞組：____________含義:____________⑥Mynoseisblockedupwiththecold.由于感冒，我的鼻子不通氣。詞組：____________含義:____________⑦Wefoundthatabigelephantblockedourway.我們發現一頭大象擋住了去路.詞組：____________含義:____________即學即用用blockout，blockup，blockone’sway，blockoff填空（1）Youcan’tleavethevillage.Allthestreetsare______.（2)Apieceofrockhasfallenand______.Wehadtostop.（3）Overtheyearsshehadtriedto______thatpartofherlife.（4）Thispipe（管子)is______.Thereisapieceofwoodinit.2．Grammar：主語從句（1)主語從句的定義：在復合句中起主語作用的句子稱為主語從句.(2）主語從句在句中作主語，有以下兩種結構：A．主語從句位于句首用“[]"號畫出下列句子的主語從句，并譯成漢語①Whathedidintheearthquakemovedeverybody。翻譯：______________________________________________________________他在地震中做的事感動了每一個人.②Whosecarrunsfastershouldbetested。翻譯:_______________________________________________________________誰的車跑得更快應該被測試一下。③Whokeptthedooropenallnightwasunknown.翻譯：________________________________________________________________誰讓門整夜開著，沒人知道.B．主語從句位于句尾，要用it作形式主語用“［]”號畫出下列句子的主語從句,并譯成漢語④Itisreportedthattherainwillstoptomorrow.翻譯：________________________________________________________________據報道,明天雨會停。⑤Itiscertainthatthewholeworldwillwinthevictoryoftheanti-terrorism.翻譯：________________________________________________________________全世界一定會取得反恐的勝利.⑥Itisapitythathedidn'tcometotheparty.翻譯：________________________________________________________________可惜的是他沒來參加晚會。⑦IthappenedthatIwasoutthatday.翻譯：________________________________________________________________碰巧那天我不在。⑧Isittruethatthescientistwillgiveusalecturenextweek？翻譯：________________________________________________________________那位科學家下周要來給我們作報告,這是真的嗎?（3)主語從句的連接詞可以分為以下三類：A．that，whether/if連接詞that本身沒有意義，不作句子成分，只表示從句的開始,位于句首時that不能省略；whether/if含有“是否”的意思。語法填空⑨______youdon’tlikehimisnoneofmybusiness.⑩______wecancontrolthefloodsisstilluncertain.（我們是否能控制洪水，目前還不肯定.)Itdoesn'tmatter______shewillcomeornot.(她是否會來并不要緊。）B．連接代詞what,who(m），which，whose，除了引導主語從句之外,還在從句中分別作主語、賓語、表語或定語；連接副詞when，where，why，how,除了引導主語從句之外，還在從句中作狀語。翻譯下列句子，并說明引導詞在從句中充當的成分Whowilldoitdoesn’tmatter。翻譯:________________________________________________________________Whatweneedismorewater.翻譯：________________________________________________________________Whenwestarttheworkisanimportantquestion。翻譯：________________________________________________________________C．whatever，whoever，whomever,whichever與what，who（m），which的用法一樣，只是具有較強的語意,含有“凡是，不管，無論”等含義。翻譯句子Whateverhesaidwasn’ttrue.翻譯：__________________________________________________________________Whicheverbookyouchooseisyours。翻譯：__________________________________________________________________（4）主語從句應注意的幾個問題A．主語從句總是使用陳述語序單句改錯Whenwillwestarthasn'tbeendecided.________________________________________________________________________Whatdoyouneedarefoodandwater.________________________________________________________________________B．主語從句的主謂一致a．含有主語從句的句子，主句謂語動詞多用單數形式。b．含有what引導的主語從句的句子，主句的謂語動詞有時與表語保持一致。c．有兩個引導詞引導的主語從句若表示一件事情，主句謂語動詞應該用單數形式；若表示兩件事情，主句謂語動詞應該用復數形式。語法填空Whyhedidn’tcometothemeeting______（be）aquestionweshouldmakeclear.Whathesaidatthemeeting______（be）veryimportant.Whowillholdthemeeting______（have)beendecided。WhatIwant______（be）anewbicycle。Whatmymotherbought______（be）somebooks.Whenandwherehewasborn______(be）notclear。Whatcausedtheaccidentandwhowouldberesponsibleforit______（have）notbeenfoundout。C．it作形式主語和it引導強調句的比較強調句型：Itis/was。。。that...從形式上看，與it作形式主語的句型“Itis/was..。that"很像，但二者有本質的區別,判斷關鍵：如把句中的Itis/was和that去除，句子成分仍然完整,說明該句為強調句型，否則則為主語從句。判斷句子類型并譯成中文Itisapitythathecan'tgowithus。句子類型：_____________________________________________________________翻譯:_________________________________________________________________ItwasinParisthattheymetforthefirsttime.句子類型：_____________________________________________________________翻譯：_________________________________________________________________D．在“Itissaid/believed/reportedthat。。。"“Ithappens/occursthat。..”“Itdoesn'tmatterthat。。。”中that引導的主語從句不可提到句首.判斷句子正誤（）ItissaidthatthePresidentwillvisitthatcountrynextweek.（）ThatthePresidentwillvisitthatcountrynextweekissaid.

參考答案1．④blockoff封鎖，封閉⑤blockup阻塞，塞住⑥blockup封住（孔，洞）⑦blockone'sway擋住某人的路即學即用：（1）blockedoff（2）blockedourway(3）blockout(4）blockedup2．①[Whathedidintheearthquake］movedeverybody。②［Whosecarrunsfaster]shouldbetested。③［Whokeptthedooropenallnight］wasunknown.④Itisreported［thattherainwillstoptomorrow]．⑤Itiscertain［thatthewholeworldwillwinthevictoryoftheanti.terrorism]．⑥Itisapity［thathedidn'tcometotheparty]．⑦Ithappened［thatIwasoutthatday]．⑧Isittrue［thatthes