unit4 grammar(subject clause)

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1、Unit4GrammarNounClauses(名词性从句)SubjectClause(主语从句)AppositiveClause（同位语从句）ObjectClause（宾语从句）PredicativeClause（表语从句）主语从句subjectclauseGrammar3.Tofindyourwaycanbeaproblem.Underlinedthesubject2.Smokingisbadforyou.1.Youareastudent.5.Whatshesaidisnotyetknown.Asentenceserving

2、assubjectiscalledSubjectClause.4.Mr.Liisourheadmaster.Whowillgomakesnodifference.Whichisthebestisnotcertain.Whydinosaursdiedoutisstillunknown.Whenwewillgettogetherhasnotbeendecided.Howshecankeephealthyisasecret.Whetherhewillcomeisnotveryimportant.WhowillgoWhichistheb

3、estWhydinosaursdiedoutWhenwewillgettogetherHowshecankeephealthyWhetherhewillcomeFindoutthesubjectclauses判断主语从句的方法？主语从句（NounClausesastheSubjet）引导主语从句的连接词有：从属连词:that,whether，if;连接代词:who,what,which,whatever,whoever;连接副词:when,where,how和why,however,Whenever等。引导主语从句的关联词有三

4、类：1)从属连词thateg:Thatheisthebeststudentintheclassisobvious.很明显,他是我们班上最优秀的学生。NOTE:从句结构完整；that（充当，不充当）句子成份，（有，无）意义，起连接作用，（可以，不可以）省略。√√√.Itwasnotclearwhetherthesolidshapewouldlastornot.SubjectClauseRealSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.引导主语

5、从句在句首只能用whether,有it作形式主语的whether/if都可以.Conclusion:ifIf×SubjectClause2)从属连词whether/if这样就构成了下面一些常用句型:1)Itis+n.+that从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这

6、是事实)hecheatedintheexam.ItisapitythatItisafactthatIt’scertainthat…肯定…Itispossiblethat...很可能……Itisunlikelythat...不可能……Itisobviousthat…很明显…Itisnecessaryimportantaturalstrange...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thismeasureise

7、ffective.*Itisimportantthatwe________(learn)Englishwell.+(should)+do…ItispossiblethatItisobviousthat2)Itis+adj.+that从句shouldlearnIthappenedthat...碰巧……Itoccurredtomethat…我突然想起…*________________(刚好)Icameintotheofficeatthattime.*____________________(我突然想起)Iforgettosentt

8、heletter.IthappenedthatItoccurredtomethat3)It+vi.+that从句4)It+be+done+that从句Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreport