Unit5WorkingthelandLearningaboutLanguage语法主语从句课件-高中英语人教版选择性

SubjectClause主语从句DiscoverUsefulStructuresUnit5WorkingtheLandLearningaims1.

Tomastertheconceptofsubjectclauseanditsbasicusage.2.Tousesubjectclause’sconjunctionscorrectly.3.

Tousesubjectclausesinrealsituations.

句子类型简单句并列句复合句主句形容词性从句(定语从句)名词性从句副词性从句(状语从句)主语从句宾语从句表语从句同位语从句从句Definitionandtypes:Step1.Lead-in5.Tofindyourwaycanbeaproblem.

4.Smokingisbadforyou.1.Janeworkshard.2.Youareastudent.

3.Theoldshouldberespected.Step2.What’sthesubjectandsubjectclauses?6.Whatshesaidisnotyetknown.结论：主语:句子说明的人或事物，一般放在______。

主语从句:在主从复合句中，充当

的从句。句首主语从句作主语名词作主语代词作主语形容词作主语动名词作主语动词不定式作主语7.Itisapitythatyoudidn’tseehim.主语从句作主语主语Step3.

主语从句的引导词

连接词有从属连词、连接代词和连接副词。从属连词：that、whether、if连接代词：who、whoever、whom、whose、what、whatever、which、whichever连接副词：when、where、how、why、whenever、wherever、however1.That

Yuandevotedallhislifetodevelopinghybridrice

movedallpeoplearoundtheworld.2.Whetheritwaspossibletodevelopahybridplantwasamatterofgreatdebate.that_____成分，___意义，____省略。whether____成分，__意义，译为_____。

从属连词引导主语从句只起引导作用，在主语从句中

任何成分；不做是否无不能不做有1.：

that、whether、if

引导主语从句的从属连词从属连词不充当Whowillgomakesnodifference.Whatweneedismoretime.WhichbookIshallchoosehasn'tbeendecided.Whoeverbreaksthelawwillbepunished.who在主语从句中充当_____,译为___。what在主语从句中充当_____,译为____。which在主语从句中充当_______,译为_______。whoever在主语从句中充当_______,译为_______。2.连接代词:

who、whoever、whom、whose、what、whatever、which、whichever宾语什么主语谁主语无论谁定语哪一个连接代词Whenwewillleavehasn'tbeendecided.Wherethemeetingwillbeheldisnotknown.Whyhecriesisnotclear.Howshekeepshealthyisasecret.when在主语从句中充当_______,译为______。where在主语从句中充当_______,译为______。why在主语从句中充当_______,译为_______。how在主语从句中充当_______,译为_______。3.连接副词：when、where、how、why...连接副词状语什么时候状语哪里状语为什么状语怎样注意：what与that在引导主语从句时的区别1._______yousaidyesterdayisright.2._______sheisstillaliveisexciting.3._______helostthebikeworriedhimalot.4._______helostyesterdayishisbike.WhatThatWhatThatwhat既引导从句，又在从句中充当

、

或

，而且

(有/没有)意义，而that只引导从句，在从句中

(充当/不充当)成分，也

(有/无)意义。主语宾语表语有不充当无“缺什么补什么”原则缺主语，指人用____，指物用_____缺宾语，指人用______

_，指物用____缺时间状语用______；地点状语用______；原因状语用_____；方式状语用_____；定语用____________；什么都不缺用_______，缺“是否”_______whowhatwho/whomwhatwhenwherewhyhowwhich/whose

如何选主语从句的连接词？thatwhetherStep√×主语从句一律用

，即主语在前，谓语在后。陈述语序Step5：

主语从句

主谓一致

问题1.Whetherthepatientwillbetaken

______(be)unknown.2.Whenandwherethepatientwillbetaken_____(be)unknown.3.Whenthetaskcanbefinishedandwhetherhecanhavearest_____(be)unknown.4.Whathewantsmost____(be)stayingwithhisfamily.

Whattheyneed_______(be)masks(口罩).is单个从句做主语，谓语大多数使用_______(单数？复数？)单数由两个连接词引导同一个主从，谓动使用____(单数？复数？)单数主语为and连接的两个主从时，谓动使用____(单数？复数？)复数what在主从中做宾语时，谓语的单复数取决于它后面的

。areisareis表语Exercise:1.Thathewillpasstheexam

(be)certain.2.Whenandhowhesolvedtheproblem

(be)notclear.3.Whathewantedtodo

(be)tohaveagoodrest.4.Whentheywillstartandwheretheywillgo

(be)stillunknown.areisisisStep6：主语从句太长怎么办？Thatallcountriesworktogetherisimportant.

用一个

It

来解决问题！Itisimportantthatallcountriesworktogether.

★主语从句为了避免头重脚轻现象,用it做

，而把从句放在后面充当

。真正的主语形式主语注意：主语从句位于

时,不能用if

引导,主语从句

时,才可以用if引导。Exercise:句首后置Step7：

It作形式主语的句型1.Itseemsthatyoudisagreewiththeplan.2.It’sapitythatyoucan’tattendmybirthdayparty.3.Itissuggestedthatthemeetingbeputoff.4.Itisnecessarythatseveralnurses(should)stay.不及物动词或系动词It+

+主语从句(seem,appear,happen…)It+be+

+主语从句(apity,afact...)名词It+be+

+主语从句

(said,believed,reported,known,proved,…)过去分词

It+be+

+主语从句(necessary,obvious,true,strange,natural...)形容词Summary主语从句复合句中用作主语的从句叫作主语从句含义从属连词:that,whether连接代词:who,whoever,whom,whomever,whose,what,whatever,which,whichever连接副词:when,where,how,why,whenever,wherever,however连接词注意语序问题:陈述语序(主语+谓语)主谓一致问题It作形式主语的句型Exercise:单句语法填空

WhoWhetherWhereThatWhichthatItWhatWhoeverWhat课文原句回顾1.However,

concernedhimmostwas

farmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.2.

thiscouldbedonewasachallengingquestionatthetime.3.However,

itwaspossibletodevelopahybridofself-pollinatingplantssuchasricewasamatterofgreatdebate.4.Today,

isestimated

about60percentofdomesticrice...5.

impressespeoplemostaboutYuanLongpingishisongoingabilitytofulfilhisdreams.whatthatHowwhetheritthatWhat1.

(令我们印象最深的是)yourartskill