[整理]名词性从句教学讲义ppt课件.ppt

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1、名词性从句考点1.引导词that与what；that与whether；if与whether；what与how等的区别；2.名词性从句的时态和语序问题；3.名词性从句的语气问题；4.同位语从句与定语从句的比较区别。定义在句子中起名词性作用的句子叫名词性从句。分类名词性从句主语从句表语从句宾语从句同位语从句主语从句在另外一个句子中做主语的句子叫主语从句。主语从句通常由从属连词that，whether和连接代词what,who,which,whatever,whoever以及连接副词how,when,w

2、here,why等词引导。引导主语从句的关联词有三类:（1）从属连词that(不充当句子成分,没有词汇意义)Thattheywereintruthsisterswasclearfromthefacialresemblancebetweenthem.whether“是否”(不能使用if)Whetherhewillcomehereisnotclear.(2)连接代词who,whom,whose,what,which,whoever,whatever,whicheverwhoever=anyonewho

3、whatever=anythingthatwhichever=any…thatWhowillgivethespeechisnotknownyet.Whotheprizewillbegiventoisnotdecidedyet.(3)连接副词where,when,how,why.Wherethemeetingwillbehelddependsontheweather.Whentheyareleavingisbeingdiscussed.有时为避免句子头重脚轻，常用it代替主语从句作形式主语放于句首，

4、而把主语从句置于句末。主句的谓语动词一般用单数形式。常用句型如下：①It+be+形容词(obvious,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc)+thatItisprobablethathetoldhereverything.②It+be+名词词组(nowonder,anhonour,agoodthing,apity,nosurprise,etc)+thatItisnosur

5、prisethatourteamshouldhavewonthegame.③It+be+过去分词(said,reported,thought,expected,decided,announced,arranged,suggested)+thatItisannouncedintoday’snewspaperthatBushwillpayavisittoChinanextweek.④It+seems/appears,happens等不及物动词及短语+thatIthappenedthatIwasoutt

6、hatday.⑤Itdoesn’tmatter(makesnodifferences,etc)+连接代词或连接副词引导的主语从句Itmakesnodifferenceswhereweshallhavethemeeting.⑥当主语从句出现在感叹句中时,用it作形式主语.Howstrangeitisthattheyaresoquiet！注意:单个的主语从句作主语时，谓语动词用单数形式。如果是两个或两个以上的主语从句作主语，谓语动词则用复数形式。在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时

7、，谓语动词要用虚拟语气“(should)+do”，常用的句型有：Itisnecessary/It’simportant/It’snatural(strange,etc.)that…whether与if均为“是否”，但下列情况下只用whether：1.whether引导主语从句并在句首Whetherhewillcomeisnotclear.2.引导表语从句Thequestioniswhetherhe’llcome.3.whether从句作介词宾语I’mnotsureaboutwhetherwe’ll

8、win.4.从句后有“ornot”Whetheryoulikeitornot,you’llhavetodoit.表语从名在另外一个句子中作表语的句子叫表语从名。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用asif,because引导。其基本结构为：主语+系动词+that从句例如：Thefactisthatwehavelostthegame.Thisiswhereourproblemlies.宾语从句在另一个句子中作宾语的句子叫宾语从句。引导宾语