1、名词性从句连接词的使用 (一一)that和和what的选用：的选用：that和和what都可引导所有的名词从句。都可引导所有的名词从句。但是，但是，what除起连接作用外，还除起连接作用外，还在名词性从句中充当成分，可做从在名词性从句中充当成分，可做从句的主语、宾语、或表语。而句的主语、宾语、或表语。而that在名词性从句中不充当任何成分，在名词性从句中不充当任何成分，只起连接作用。只起连接作用。that/what 1._hewantsisabook.2._hewantstogothereisobvious.3.Theresultis_wewonthegame.4.Thisis_wewantt
2、oknow.5.Is_hetoldustrue?6.Weshouldpayattentionto_theteacherissaying.7.Ihavenodoubt_hewillcome.8.Ihavenoidea_hedidthatafternoon.What That thatwhatwhatwhatthatthat(二）二）if和和whether的选用的选用 不能使用不能使用if的情况：的情况：a.主语从句主语从句 b.表语从句表语从句 c.同位语从句同位语从句d.介词后的宾语从句介词后的宾语从句 e.whethertodo做动词宾语不能用做动词宾语不能用iftodo.f.whether
3、ornot连在一起引导宾语从句连在一起引导宾语从句时不用时不用if.1.I asked her _ she had a bike.2._ we will hold a party in the open air tomorrow depends on the weather.3.Were worried about _ he is safe.4.I dont know _ he is well or not.5.I dont know _ or not he is well.6.The question is _ he should do it.7.The doctor can hardly
4、answer the question _ the old man will recover soon.8.I dont know _ to go.whether/ifWhetherwhetherwhether/orwhetherwhetherwhetherwhether（三）其它连接代词和副词的连用（三）其它连接代词和副词的连用 主要根据名词性从句中的具体意义主要根据名词性从句中的具体意义,正确正确的选择的选择who、which、when、where、why、how等连接词，这些连接词既具有等连接词，这些连接词既具有疑问含义，又起连接作用，同时在从句中疑问含义，又起连接作用，同时在从句中充当
5、各种成分。我们何时举行运动会还没充当各种成分。我们何时举行运动会还没有决定。有决定。我们何时举行运动会还没有决定。我们何时举行运动会还没有决定。_weshallholdoursportsmeetingisnotdecided.我不知道昨天谁打破了玻璃。我不知道昨天谁打破了玻璃。Idontknow_broketheglassyesterday.我不知道他长的什么样子。我不知道他长的什么样子。Ihavenoidea_helookslike.这就是我忘记眼镜的地方。这就是我忘记眼镜的地方。Thisis_Ileftmyglasses.When whowhatwhere（四）引导词（四）引导词that的
6、省略的省略 that可省略的情况：可省略的情况：单个宾语从句中的单个宾语从句中的that可省略可省略 that不可省略的情况：不可省略的情况：a.主主语从句语从句b.表表语从句语从句c.同位同位语从句语从句d.用用it做形式宾语的宾语从句做形式宾语的宾语从句e.并列的宾语从句中的并列的宾语从句中的后几个从句后几个从句的的,引导引导词词that不能省略不能省略 1.I dont think _ she is coming.2.It is a pity _ he has made such a mistake.3.The reason is _ he is careless.4.The news
7、_ our team won the match inspired us.5.I dont think it necessary _ you should read English aloud.6.He told me _ his father had died and _ he had to make a living alone./thatthatthatthat/that 五、同位语从句的引导和辨别五、同位语从句的引导和辨别 1.同位语从句的格式：同位语从句的格式：n.+连接词连接词+从句从句 2.能接同位语从句的名词有：能接同位语从句的名词有：fact、idea,news,inform
8、ation,order,belief,suggestion,advice等等.3.连接词通常是连接词通常是that,也可根据含义选用也可根据含义选用whether,what,when,where等来引导同等来引导同位语从句位语从句.1.Ihavenoidea_hecomesfrom.2.Hecantanswerthequestion_hegotthemoney.3.Hegaveusmanysuggestions_weshouldgetupearlierandtakemoreexercise.4.Ihavenodoubt_hewillwin.5.Ihavesomedoubt_hewillwin.
9、wherehowthatthatwhether（六）（六）同位语从句和定语从句的区别同位语从句和定语从句的区别 1.定语从句是先行词的定语从句是先行词的修饰语修饰语，它不涉及先，它不涉及先行词的具体内容。定语从句中行词的具体内容。定语从句中that不但起不但起连连接接作用，而且在定语从句中作用，而且在定语从句中充当充当一个句子一个句子成分成分，充当从句的，充当从句的宾语成分时可省略宾语成分时可省略。2.同位语从句对中同位语从句对中心词的内容作进一步的心词的内容作进一步的解释和说明解释和说明，表明中心词的具体内容。引，表明中心词的具体内容。引导同位语从句的导同位语从句的that在同位语从句中在同
10、位语从句中不做不做任何成分任何成分,只起只起连接连接作用作用,无具体含义无具体含义,且且不可不可省略省略.1.Weexpressedthehopethattheyhadexpressed.2.WeexpressedthehopethattheywouldcometoChinaagain.1.Theinformationhasbeenannouncedthatmoremiddleschoolgraduateswillbeadmittedintouniversity.2.Theinformationthatherevealedatthemeetingisofgreatvalue.（七）（七）名词名
11、词demand,suggestion,proposal,advice等词后的同位语从句的语等词后的同位语从句的语气要用虚拟语气气要用虚拟语气,结构为结构为should+do,should可省略可省略 HegavemeasuggestionthatI(should)becalmnow.(八）八）宾语从句的时态呼应宾语从句的时态呼应 1.如果主句时态是现在时或将来时如果主句时态是现在时或将来时,从句谓从句谓语可根据语可根据句意句意需要而选用任一种时态需要而选用任一种时态.a.他相信他的梦想总有一天会实现的他相信他的梦想总有一天会实现的.Hebelieves_.b.请告诉我你昨天这个时候在干什么请告
12、诉我你昨天这个时候在干什么.Pleasetellme_.his dream will come true one dayWhat were you doing this time yesterday Practice:1.It now appears _ they are in need of help.A.that B.which C.what D.how 2.It is good news _ they will arrive in a few days.A.which B.what C.that D.how 3.This is _ she was born.A.where B.which
13、 C.that D.what 4.The question is _ we cant go there today.A.that B.what C.which D.when 5.Thequestionis_itisworth doing.A.ifB.whether C.whichD.what 6.Thereasonhehasmadesuchgreat progressis_hehasnever wastedhistime.A.becauseB.why C.thatD.what 7.Mysuggestionis_weshould turnthelandintoricefields.A.whatB
14、.that C.whichD.where 8.His proposal is that the dam _ at the foot of the mountain.A.build B.will build C.be built D.will be built 9.We all know the truth _ the earth goes round the sun.A.that B.which C.what D.whether 10.We heard the news _ our team had won.A.which B.that C.what D.where 11.Theproblem_itisrightorwronghasnotyetbeendecided.A.whichB.that C.whetherD.if 12.Youmustdowell_theteacherasksyoutodo.A.whichB.what C.thatD.where
