主語從句教案

1、主語從句適用學科英語適用年級i咼二適用區(qū)域全國課時時長（分鐘）60分鐘知識點主語從句連接詞的基本用法教學目標能夠正確分析從句結構；掌握連接詞的基本用法教學重點掌握that、what、whether等的用法，能夠正確判斷從句所缺成分教學難點It做形式主語教學過程一、課堂導入Whatpartservesassubjectineachsentence?Atreehasfallenacrosstheroad.Youareastudent.Tofindyourwaycanbeaproblem.Smokingisbadforyou.“Howdoyoudo?isagreeting.二、復習預習給出主語從句，

2、分析成分:Whatshesaidisnotyetknown.Thatweshallbelateiscertain.Itiscertainthatweshallbelate.、知識講解知識點1:主語從句的概念及其連接詞：用作主語的從句叫主語從句，它是名詞性從句之一。引導主語從句的連接詞有：連詞that,whether；連接代詞who,what和which；連接副詞when,where,how和why等。知識點2：連接詞的用法。1.【考查點】that無意義，只起到引起從句的作用Thattheyarebadlyinneedofhelpisquiteclear.他們急需幫助，這是十分明顯的。Thatt

3、heywereintruthsisterswasclearfromthefacialresemblancebetweenthem.很明顯，她們確是親姐妹，她們的臉型很相似。Thatonebelievesinoneselfindoingeverythingisveryimportant.Thathebeathisopponentinthetennisgameencouragedhisteammates.2.【考查點】what有意義，“所的”或隨句子意思而定。在從句中作主語，賓語和表語。Whattheteachersaidtodaywasquiteright.老師今天說的話是十分正確的。Whatm

4、akesherdifferentfromothersisherstrangebehavior.Whatshedidisnotyetknown.她干了什么尚不清楚。3【考查點】whether有意義，“是否。Whethertheywillsellthehouseisnotyetdecided.他們是否賣掉這所房子還沒有決定。Whetheritistrueisnotcertain.Whetherhellcomehereisntclear.他是否會來這里還不清楚。4.【考查點】when引起表示時間的主語從句，意思是“.的時候”或“何時.Whenwecangetridoftherubbishisstil

5、lunknown.5.【考查點】where引起表示地點的主語從句，意思是“在.的地方”或“到.的地方”Wherethemeetingwillbeheldhasntbeendecided.6【考查點】how引起表示方式的主語從句,意思是“.的方式”或“如何.”Howwecangetintouchwithhimisthemostimportant.Howthishappenedisnotcleartoanyone.這事怎么發(fā)生的，誰也不清楚。7.【考查點】why引起表示原因的主語從句，意思是“的原因或“為什么Whyhesaidthatrubbishatthemeetingpuzzledme.8.【

6、考查點】who誰，whose誰的Whowillbechosenisthetopicofconversationnow.Whosehandwritingisthemostbeautifulisveryclearnow.9【考查點】疑問詞+ever也可以引起主語從句Whateverwassaidheremustbekeptsecret.這里說的話都應當保密。Whoevermakesmistakesmustcorrectthem.凡犯了錯誤的人都必須改正。Whoeverfailstoseethiswillmakeabigmistake.知識點3：常以it作形式主語的句型It+be+形容詞(obvio

7、us,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.)+that從句。Itiscertainthatshewilldowellinherexam.毫無疑問，她考試成績會很好。Itisprobablethathetoldhereverything.很可能他把一切都告訴她了。ItistruethattheChinesevolleyballteamoncewonsixworldchampionships.+that從句。It+be+名詞詞組(nowonder,anhonor,agoo

8、dthing,apity,nosurprise,etc.)Itisapitythatwecantgo.很遺憾我們不能去。It+be+過去分詞(said,reported,thought,expected,decided,announced,arranged,etc.)+that從句。ItissaidthatMr.GreenhasarrivedinBeijing.據(jù)說，格林先生已經(jīng)到了北京。It+seem,happen等不及物動詞及短語+that從句IthappenedthatIwasoutthatday.碰巧我那天外出了。Itdoesntmatter(makesnodifferenceetc.

9、)+連接代詞或連接副詞引起的主語從句。Itdoesntmatterwhethershewillcomeornot.她是否來這無關緊要。當that引導的主語從句出現(xiàn)在疑問句中時，要用it作形式主語，而把主語從句后置。Doesitmattermuchthattheywillnotcometomorrow?他們明天不來很要緊嗎？當主語從句出現(xiàn)在感嘆句中時，要用it作形式主語，而把主語從句后置。Howstrangeitisthatthechildrenaresoquite.孩子們這么安靜真奇怪。知識點4：1.【考查點】在Itisinsisted/ordered/commanded/suggested/

10、advised/proposed/demanded/required/requested.that.結構中，謂語動詞常用should+動詞原形。Itissuggestedthatweshouldthinktwicebeforeweact.Itisrequestedthatweshouldchangetheoldinstrument.2【考查點】在Itisnecessary/important/strange/surprisedthat.或Itisapity/shamethat.結構中，用should+動詞原形Itisapitythatheshouldgowithouttellinganyone

11、.Itisapitythatyoushouldmissthebus.真遺憾，你錯過了那班公共汽車。Itisnecessarythatyoushouldtellhimthetruth.知識點5：單個的主語從句作主語時謂語動詞用單數(shù)；由and連接的兩個主語從句作主語時，謂語動詞用復數(shù)WhenwewillgotoAustraliaisnotdecided.Whowillgothereandwhentheywillgotherearenotknown.Howandwhytheyhavedonethatisnotknown.四、例題精析【例題1】makesthebooksoextraordinaryis

12、thecreativeimaginationofthewriter.A.ThatB.WhatC.WhoD.Which【答案】B解析】本題考查主語從句的關系詞辨析。句意：讓這本書如此不同尋常的是作者富于創(chuàng)造的想象力例題2】thedelayedflightwilltakeoffdependsmuchontheweather.A.WhyB.WhenC.ThatD.What【答案】B【解析】本題考查主語從句的關系詞辨析。句意：延誤了的航班何時起飛主要取決于天氣。例題3】ExactlythepotatowasintroducedintoEuropeisuncertain,butitwasprobablyaround1565.A.whetherB.whyC.whe