高中英语——表语从句练习

高中英语——表语从句练习一．选择题（共45小题）1．The most pleasant thing of the rainy season is _____ one can be entirely free from dust．（）A．what B．that C．whether D．why2．The world is not always ______ we wish it to be．（）A．that B．which C．what D．where3．As Charles Darwin wrote in The Descent of Man，"The highest possible stage in moral culture is ________ we recognize that we ought to control our minds．"（）A．that B．how C．where D．when4．Home is ______ we complain the most，but are often treated the best．（）A．which B．where C．that D．how5．The most exciting moment during the Spring Festival is _____ the family enjoy the big dinner together．（）A．what B．why C．which D．when6．The best moment I can now remember was ______ I was informed my first book was to be published．（）A．that B．what C．how D．when7．Perseverance is a kind of quality and that's _______ it takes to do anything successfully．（）A．how B．which C．where D．what8．Teens take risks and while we want to encourage independence，sneaking out at night to hang out with friends or dates isn't ________ parents see as being independent．（）A．where B．when C．which D．what9．The most exciting thing for him was _____ he finally found the lost diamond ring in _____ used to be a servant's room．（）A．that；that B．what；what C．what；that D．that；what10．What I value about my father is ________ he shows love and care for me and my family．（）A．what B．which C．how D．that11．Tom's worry ishe won't be chosen for the school football team．（）A．that B．whether C．when D．why12．One key point of his speech on arts is _______ arts should serve the people．（）A．that B．which C．what D．/13．The TV manufacturer is much more productive．This years'production is three times _____ it was five years ago．（）A．what B．that C．than D．as14．As we know，attitude is altitude．Our attitude is ______ has changed everything in our life．（）A．it is what that B．what is it thatC．what it is that D．it is that what15．Welcome to Disneyland in Shanghai!This is _____ you can have fun and more than fun．（）A．where B．how C．what D．that16．﹣﹣﹣You are late again．But this is ____ the bus broke down on the way．（）17．He is very humorous，while his brother is rather serious．That is _________ their difference lies．（）A．why B．where C．how D．when18．﹣What a mess!You are always so lazy!﹣I'm not to blame，mum．I am ________ you have made me．（）A．how B．what C．that D．who19．Grandma pointed to the hospital and said，"That's ______ I was born．"（）A．when B．how C．why D．where20．Energy，passion and a burning desire are，you see，true learning takes．（）A．that B．what C．how D．which21．The problem is ______ we can improve our reading skill in such a short time．（）A．when B．what C．how D．that22．一You like rock music，while I like folk songs．一That's______ we differ．（）A．how B．what C．where D．which23．Yuan Longping takes up the research on farming for decades and this is ____ he devotes all his life to．（）A．which B．how C．where D．what24．I think the biggest problem in banning smoking is ______ people can buy cigarettes easily．（）A．that B．whether C．where D．how25．He showed calmness and peace of mind，and this ishe stood out in the game．（）A．when B．why C．that D．what26．Don't be sad．The most important thing is ______ we must learn from our mistakes and move on．（）A．how B．that C．what D．why27．One strong public opinion in the USA is _____ government should control the use of gun．（）A．that B．where C．why D．whether28．The famous scientist has been working hard since childhood．That is_____________he has gained so many achievements．（）A．because B．what C．how D．why29．Carl hopes to win the tennis game one day．That is he has been practicing hard．（）A．why B．how C．because D．where30．﹣Your sneeze tells me you may have a flu．﹣No．It's just __________ I can't stand the smell of the paint here．（）A．how B．that C．why D．when31．Is this hotel _________ you said we were to stay in your letter？（）A．where B．what C．which D．the one32．What Alex really means is _______ he disagrees with us．（）A．how B．why C．what D．that33．Her only problem，if you can call it a problem，is ________ she expects to be successful all the time．（）34．One reason why Crystal has become so famous is_________ he is vey quick thinking．（）A．that B．whether C．which D．what35．The question is ________ we will have our sports meet next week．（）A．that B．if C．when D．whether36．I believe that the world is _____ you think it is．So smile at the world and it will smile back．（）A．what B．how C．that D．which37．Country life gives him peace and quiet，which is ____ he can't enjoy while living in big cities．（）A．that B．why C．where D．what38．One important thing______ Jane discovered was _______ chimps hunt and eat meat as well．（）A．what；that B．that；\ C．\; if D．that；that39．﹣I rang you at about three yesterday afternoon，but there was no reply．﹣Oh，that was probably _____ I was seeing the doctor．（）A．when B．why C．what D．that40．One advantage of owning your own car isyou can go anywhere at any time you like．（）A．when B．why C．what D．that41．A library is ______ you can borrow books or magazines as well as read something．（）A．where B．the place C．in which D．that42．﹣Why do you think the film star is getting less popular？﹣I guess the way she wears is ____ annoys her fans most．（）A．which B．where C．how D．what43．﹣Jack is dynamic and eager to try something he has never done before．﹣Oh，I see．That's _______ he's different from others．（）A．where B．what C．when D．that44．In today's world，being able to speak more than one language，including English is ______ you stand out and get ahead．（）A．what B．that C．which D．how45．James always does his best，and that's _____ I like about him．（）A．who B．how C．whether D．what高中英语——表语从句练习参考答案与试题解析一．选择题（共45小题）1．（2016•北京）The most pleasant thing of the rainy season is _____ one can be entirely free from dust．（）A．what B．that C．whether D．why【分析】雨季最令人愉悦的就是人们可以完全不再受到沙尘的困扰．【解答】答案B．"﹣﹣one can be entirely free from dust"是做系动词is的表语，所以该部分是表语从句．分析表语从句的句子成分可知：从句中的主语是one，can be是复合谓语，free from dust是形容词短语做表语，句子是"主系表"结构，那么可首先排除连接代词what．连词whether引导表语从句时虽然不做成分，但是有意义，意思是"是否"；连接副词why引导表语从句时，不仅在句中作状语，而且还有意义，意思是"为什么"．that引导表语从句时，只起引导作用，没有任何意义，但是不能省略．联系句子所表达的意思可知横线处不缺意义，故用连词that来引导表语从句．故答案选B．【点评】本题考查表语从句，要掌握表语的用法和学会句子成分的分析．2．（2016•东城区一模）The world is not always ______ we wish it to be．（）A．that B．which C．what D．where【分析】世界并不总是我们希望的那样．【解答】答案：C题干中we wish it to be是一个主谓结构，放在系动词is后，可以知道是一个表语从句；表语从句中be 动词后缺少表语，所以使用连接代词，which 哪一个，在名词性从句中表示有范围的选择，句意表达的是抽象的含义．故选C．【点评】表语从句是名词性从句的一种．表语从句放在连系动词之后，充当复合句中的表语，说明主语是什么或者怎么样．常用从属连词whether，as，as if/though，that；连接代词who，whom，whose，what，which，whoever，whatever，whichever；连接副词where，when，how，why来引导．学习时要注意连词的区分和掌握．3．（2016•苏州一模）As Charles Darwin wrote in The Descent of Man，"The highest possible stage in moral culture is ________ we recognize that we ought to control our minds．"（）A．that B．how C．where D．when【分析】正如查尔斯达尔文在"人类的起源"中说的那样：道德修养有可能达到的最高境界是认识到我们应该控制自己的思想．【解答】答案：D题干中we recognize that we ought to control our minds是一个完整的主谓结构，要用连接副词；how表示方式，where表示地点，when表示时间；句意表达的是当我们能够控制我们的思想时，我们就达到了道德修养的最高境界．故选D．【点评】表语从句是名词性从句的一种．表语从句放在连系动词之后，充当复合句中的表语，说明主语是什么或者怎么样．常用从属连词whether，as，as if/though，that；连接代词who，whom，whose，what，which，whoever，whatever，whichever；连接副词where，when，how，why来引导．学习时要注意连词的区分和掌握．4．（2016•西城区二模）Home is ______ we complain the most，but are often treated the best．（）A．which B．where C．that D．how【分析】家是我们抱怨最多的地方，但同时又是对待我们最好的地方．【解答】答案：B不少考生看到"but are often treated the best"，认为该句缺主语，同时where、how只能作状语，而that在名从中不作成份，因而误选A．其实该句只是为了避免重复，省略了主语we，在we complain most中，complain是不及物动词，所以从句中不缺主语或宾语，应选D，where 表示"在…之处"．【点评】考查名词性从句时，除了分析句子成分，还要结合句意作出正确选择．5．（2016•海淀区一模）The most exciting moment during the Spring Festival is _____ the family enjoy the big dinner together．（）A．what B．why C．which D．when【分析】春节期间最让人激动的时刻就是一家人在一起共享丰盛的晚餐．【解答】答案：D题干中the family enjoy the big dinner together是一个完整的句子，位于系动词is后，可以知道是一个表语从句；表语从句the family enjoy the big dinner together结构完整，要用连接副词；句子前面提到了The most exciting moment 表达时间，要用when．故选D．【点评】表语从句是名词性从句的一种．表语从句放在连系动词之后，充当复合句中的表语，说明主语是什么或者怎么样．常用从属连词whether，as，as if/though，that；连接代词who，whom，whose，what，which，whoever，whatever，whichever；连接副词where，when，how，why来引导．学习时要注意连词的区分和掌握．6．（2016•舟山校级模拟）The best moment I can now remember was ______ I was informed my first book was to be published．（）A．that B．what C．how D．when【分析】现在我能记得的最好时刻是当我被告知我的第一本书将被出版．【解答】答案：D．根据The best moment was 说明后面整句是表语从句，而表语从句I was informed my first book was to be published．根据句意，现在我能记得的最好时刻是当我被告知我的第一本书将被出版．可知句子不完整，缺时间状语，故选D．其中I can now remember 是定语从句【点评】本题考查表语从句的连接词，在充分分析句型基础上便能选出正确答案．其中I can now remember 是定语从句，可删去不看．故题中从句是跟在"was"后面的，属于表语从句．7．（2016•杭州校级模拟）Perseverance is a kind of quality and that's _______ it takes to do anything successfully．（）A．how B．which C．where D．what【分析】坚持是一种品质品质，要做好任何事情都需要有它．【解答】答案：D．本题是个并列句，that替代上面的内容，品质，根据That's可知后面整句是表语从句，而表语从句it takes to do anything successfully句子不完整，缺take的宾语，故选D．【点评】本题考查表语从句的连接词，在充分分析句型基础上便能选出正确答案．8．（2016•丽水校级三模）Teens take risks and while we want to encourage independence，sneaking out at night to hang out with friends or dates isn't ________ parents see as being independent．（）A．where B．when C．which D．what【分析】青少年冒着风险，尽管我们想鼓励独立，晚上偷偷和朋友溜出去闲逛或约会不是父母所视为的独立．【解答】答案：D 根据Teens take risks and while we want to encourage independence，sneaking out at night to hang out with friends or dates isn't 说明后面整句是表语从句，而表语从句parents see as being independent 中句子不完整，缺成分，see…as把…视作，看作，故选D．【点评】本题考查表语从句的连接词，在充分分析句型及了解see…as把…视作，看作，基础上便能选出正确答案．9．（2016春•扬州期末）The most exciting thing for him was _____ he finally found the lost diamond ring in _____ used to be a servant's room．（）A．that；that B．what；what C．what；that D．that；what【分析】对他来说最令人兴奋的事情是，在过去是佣人的卧室里发现了这个钻石戒指．【解答】答案：D 根据The most exciting thing for him was 说明后面整句是表语从句，而表语从句he finally found the lost diamond ring in 中又含有一个介词in引导的宾语从句，宾语从句缺主语，第二空填what，这样，表语从句he finally found the lost diamond ring in whatused to be a servant's room完整，不缺成分，用that，故选D．【点评】本题考查表语从句，介词后的宾语从句的连接词，在充分分析句型及理解句意的基础上便能选出正确答案．10．（2015•郴州模拟）What I value about my father is ________ he shows love and care for me and my family．（）A．what B．which C．how D．that【分析】关于父亲我所珍惜的是他对我以及家人的爱和关心．【解答】答案为D本题考查表语从句．在本句中"____ he shows love and care for me and my family"作为整个句子的表语从句，因为该从句表达意思完整，不缺成分，故应该选关系代词"that"．【点评】名词性从句考查重点在关系词的选择．11．（2015•东城区一模）Tom's worry ishe won't be chosen for the school football team．（）A．that B．whether C．when D．why【分析】汤姆的担忧是他将不会被选上参加学校足球队．【解答】答案：A"he won't be chosen for the school football team"作为完整的句子用在了系动词is之后，因此该句为表语从句；A．that在表语从中没有任何意义，只起连接作用，但通常不能省略；B．whether 是否；C．when什么时候；D．why 为什么；根据句意可知，该从句本身表达了完整的意义，故选A【点评】本题主要考查了表语从句的用法．做类似的题时，首先可根据句子结构（主句+系动词+连接词+从句），判断该句为表语从句；其次根据句意，并结合连接词的用法，选出正确答案．12．（2015•石景山区一模）One key point of his speech on arts is _______ arts should serve the people．（）A．that B．which C．what D．/【分析】对于艺术他讲话的一个关键点就是艺术应该为人民服务．【解答】答案：A根据"arts should serve the people"作为一个完整的句子，用在了系动词is之后，因此该句是表语从句；A．连接词that在表语从句中没有任何意义，只起连接作用，但通常不能省略；B．which 哪一个；C．what通常在表语从句中作主语，宾语和表语；由于从句表达了完整的意思，故选A【点评】本题主要考查了表语从句的用法．做本题时，首先可以根据句子的结构特点，判断出该句为表语从句；其次应熟练掌握表语从句中连接词的用法．例如表语从句中的that虽然不作任何成分，但通常不能省略．13．（2015春•扬州期末）The TV manufacturer is much more productive．This years'production is three times _____ it was five years ago．（）A．what B．that C．than D．as【分析】电视生产商的产能比以前高多了．今年的产量是五年前产量的三倍．【解答】答案：A．本句考查倍数的表达法．倍数可以用倍数+what从句来表达．如：The production is now three times what it was ten years ago．现在的产量是十年前的三倍．这里what相当于the production that，故选A．【点评】本题考查倍数表示法．英语中倍数的表示法有三种：倍数+as…as…；倍数+比较级+than；倍数+the size/length/weight/wideth/height of．学习时，要注意区分和掌握．14．（2015春•盐城期末）As we know，attitude is altitude．Our attitude is ______ has changed everything in our life．（）A．it is what that B．what is it thatC．what it is that D．it is that what【分析】众所周知，态度就是高度．我们的态度就是我们生活中改变一切的事物．【解答】答案为C．本题考查名词性从句中引导词、语序和强调句型的综合运用．题干空格后面是be 动词后面的表语从句，从句中缺少的是主语．名词性从句中，what在从句中可以充当主语，而主语what又被强调句型所强调．强调句型的基本结构是"It be+被强调部分+that （被强调的是人可以用who）+其它"．如果被强调的是特殊疑问词，特殊疑问词要放在句首，构成"特殊疑问词+be it that+其它"，本题中被强调的是what，所以结构是"What is it that…"．本句是名词性从句中的表语从句，必须用陈述语序，因此陈述语序为"what it is that"，由此判断答案是C．【点评】名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．15．（2015春•朝阳区期末）Welcome to Disneyland in Shanghai!This is _____ you can have fun and more than fun．（）A．where B．how C．what D．that【分析】欢迎来到上海迪士尼！这是你能玩得开心并且不仅仅获得开心的地方．【解答】答案为A．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，表示"在这个地方你能玩得开心并且获得的不仅仅是开心"；可见从句中缺少的是"在…地方"；名词性从句中where可以在从句中充当地点状语表示"在…地方/方面"，由此判断答案是A．B项是连接副词how在从句中表示方式，不符合题意；C项连接代词在从句中不能充当状语，所以排除；D项that在名词性从句中不担任成分，不表达意思，而本句意思不完整，所以不符合题．【点评】名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．16．（2015春•商洛期末）﹣﹣﹣You are late again．But this is ____ the bus broke down on the way．（）A．why B．that C．what D．because【分析】你又迟到了．但是这是因为公共汽车在路上出故障了．【解答】答案为D．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，表示"因为公共汽车在路上出故障"；可见从句中缺少的是"原因"，做状语；名词性从句中because可以引导表语从句说明具体的原因，由此判断答案是D．A项是连接副词why连接的是具体的"结果"，不符合题意；B项that在名词性从句中不担任成分，不表达意思，而本句意思不完整，所以不符合题．C项连接代词what在从句中不能表示原因，做状语，所以排除；【点评】名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．17．（2015春•西城区期末）He is very humorous，while his brother is rather serious．That is _________ their difference lies．（）A．why B．where C．how D．when【分析】他很幽默而他的哥哥很严肃．这儿就是他们的区别所在．【解答】答案为B．本题考查名词性从句中引导词的运用．题干空格后面是is 动词后面的表语从句，从句中lie为不及物动词，缺少地点状语表示"在于…地方/方面"．名词性从句中，where在从句中可以充当地点状语，由此判断答案是B．A项表示原因，C项表示方式、D 项表示时间，均不符合题意．【点评】名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．18．（2014•江苏）﹣What a mess!You are always so lazy!﹣I'm not to blame，mum．I am ________ you have made me．（）A．how B．what C．that D．who【分析】﹣﹣怎么这么乱啊！你总是这么懒．！﹣﹣我不应该受到责备，妈妈．我今天这个样子都是你造成的．【解答】答案：B解答名词性从句时，如果从句中缺少主宾表语时，一般选择what．如果指人，则用who，但考虑本题从句中_____you have made me缺少me的宾语补足语，而且句意指的是妈妈使他成为那个样子，所以B正确．【点评】考查此类试题，要分析从句缺少什么成分，其次要注意一些特殊的语境，比如用what指代人，表示人的状态或职业．19．（2014•四川）Grandma pointed to the hospital and said，"That's ______ I was born．"（）A．when B．how C．why D．where【分析】奶奶指着医院说，"那就是我出生的地方．"【解答】答案：D系动词is后是表语从句，四个选项均为连接副词，故判断缺少状语，根据题干中给出的提示信息pointed to the hospital可知"奶奶"说的是出生的地点，故答案选D．【点评】当名词性从句中不缺主语、宾语、表语，那需要用连接副词，但要分析句中表示的是什么范畴，如果表示时间则用when，表示地点则用where，表示方式则用how，表示原因则用why．20．（2014•上饶二模）Energy，passion and a burning desire are，you see，true learning takes．（）A．that B．what C．how D．which【分析】能量，激情和热切的愿望，你知道，是真正的学习所需要的．【解答】答案：B根据句意可知，"you see"在句中作插入语，"true learning takes"用在了系动词are之后，因此该句是表语从句；A．that在表语从句中，只起连接作用，不作任何成分；B．what 在表语从中可以作主语，宾语和表语；C．how在表语从中作方式状语；D．which 哪一个，用在此处不合句意；由于从句中缺少宾语，意为：真正的学习所需要的（东西）．故选B【点评】本题考查了表语从句的用法．首先应了解表语从句的句子结构；其次要熟练掌握各连接词在表语从句中的用法．21．（2014•青岛一模）The problem is ______ we can improve our reading skill in such a short time．（）A．when B．what C．how D．that【分析】问题是我们如何才能在如此短的时间内提高我们的阅读技能．【解答】答案：C分析句子结构可知，本句是表语从句；在表语从句中：when作时间状语；what 可以作主语，宾语和表语，不能作状语；how作方式状语；that 不作任何成分；根据句意可知，从句中缺少的是方式状语；故选C【点评】本题考查了表语从句的用法．首先应了解表语从句的句子结构；其次要熟练掌握各连接词在表语从句中的用法．22．（2014•日照二模）一You like rock music，while I like folk songs．一That's______ we differ．（）A．how B．what C．where D．which【分析】﹣﹣﹣你喜欢摇滚乐，而我喜欢民歌．﹣﹣﹣这就是我们不同的地方．【解答】答案：C"______ we differ"用在了系动词is之后，因此该句是表语从句；结合句意可知，从句中缺少的是地点状语，意为：我们在这些地方不同；由于在表语从句中：A how 作方式状语；B．D．作主语，宾语，表语，不能作状语；C．where作地点状语；故选C【点评】本题考查了表语从句的用法．首先应了解表语从句的句子结构；其次要熟练掌握各连接词在表语从句中的用法．23．（2014•丰台区二模）Y uan Longping takes up the research on farming for decades and this is ____ he devotes all his life to．（）A．which B．how C．where D．what【分析】袁隆平从事农业研究有数十年，这是他把自己的一生都奉献于此了．【解答】答案：D分析句子结构可知，"____ he devotes all his life to"用在了系动词is之后，故本句是表语从句．根据句意可知，该从句缺少宾语补足语，故此处应选连接代词，意为：他把自己的一生都奉献给了农业研究；A．which 哪一个，用在此处不合句意；D．what 可以代指人或事物；故选D【点评】本题考查了连接代词what在表语从句中的用法．做本题时，首先通过分析句子结构，确定该句为表语从句；其次根据句意判断出从句缺少了宾语补足语，故选符合句意的what；另外，在本题中，还应注意总结连接代词what与which的区别．24．（2014•海淀区一模）I think the biggest problem in banning smoking is ______ people can buy cigarettes easily．（）A．that B．whether C．where D．how【分析】我认为禁止吸烟所面临的最大的问题是人们很容易就能买到烟．【解答】答案：A分析句子结构可知，"______ people can buy cigarettes easily"用在了系动词is之后，故本句为表语从句．在表语从句中：whether 不作任何成分，意为：是否；连接副词where作地点状语；how作方式状语；由于该从句本身表达了完整的意思（人们很容易就能买到烟），也不缺少任何成分；故选A．【点评】本题考查了连接代词that在表语从句中的用法：that引导表语从句时，只起连接作用，无任何意义，也不作任何成分，但是通常不能省略；由于本题中的表语从句表达了完整的意思，也不缺少任何成分，所以选了that；因此做类似的题时，需要正确分析表语从句表达的意义并熟练掌握各连接词的用法．25．（2014•德州一模）He showed calmness and peace of mind，and this ishe stood out in the game．（）A．when B．why C．that D．what【分析】他表现出了内心地平静与安宁，这就是他在比赛中脱颖而出的原因．【解答】答案：B分析句子结构可知，"he stood out in the game"用在了系动词is之后，因此本句是表语从句；根据句意可知，该从句缺少的是原因状语，意为：他在比赛中脱颖而出的原因；故此处应选作原因状语的连接副词why；when是作时间状语的连接副词；故选B【点评】本题考查了连接副词why在表语从句中的用法．通过对本题中表语从句句意的分析得知该从句缺少了原因状语，故选连接副词why．在做类似的题时，需要正确分析表语从句表达的意义，并熟练掌握各连接词的用法．26．（2014•天津模拟）Don't be sad．The most important thing is ______ we must learn from our mistakes and move on．（）A．how B．that C．what D．why【分析】不要难过，最重要的事情是我们必须从我们的错误中吸取教训，然后继续前进．【解答】答案：B分析句子的结构可知，"we must learn from our mistakes and move on"作为完整的句子，用在了系动词is之后，可判断该句为表语从句；A．how 如何；B．that没有任何意义，只起连接作用，但在表语从句中通常不能省略；C．what通常在表语从句中作主语，宾语和表语；D．why为什么；结合句意可知，该从句本身表达了完整的意思；故选B【点评】本题主要考查了表语从句的用法．做类似的题时，首先可根据句子结构（主句+系动词+连接词+从句），判断该句为表语从句；其次根据句意，并结合连接词的用法，选出正确答案．27．（2014•东城区一模）One strong public opinion in the USA is _____ government should control the use of gun．（）A．that B．where C．why D．whether【分析】美国的一个强有力的社会舆论是政府应该控制枪支的使用．【解答】答案：A分析句子结构可知，"_____ government should control the use of gun"用在了系动词is之后，因此本句是表语从句；在表语从句中：连接副词where作时间状语；why作原因状语；连接代词whether不作任何成分，意为：是否；根据句意可知，该从句表达了完整的意义（政府应该控制枪支的使用），也不缺少任何句子成分；故选A；【点评】本题考查了连接代词that在表语从句中的用法：that引导表语从句时，只起连接作用，无任何意义，也不作任何成分，但是通常不能省略；由于本题中的表语从句表达了完整的意思，也不缺少任何成分，所以选了that；因此做类似的题时，需要正确分析表语从句表达的意义并熟练掌握各连接词的用法．28．（2014•淄博一模）The famous scientist has been working hard since childhood．Thatis_____________he has gained so many achievements．（）A．because B．what C．how D．why【分析】这位著名科学家自儿时起就非常刻苦努力．那也是他为什么获得如此多荣誉的原因．【解答】答案为D本题考查表语从句．题干中"That"指代的是前一句话"这位著名科学家自儿时起就非常刻苦努力"，"____he has gained so many achievements"作句子的表语从句表示"他为什么获得如此多荣誉的原因"故选用引导词why．【点评】名词性从句是高中英语学习重难点．其中名词性从句关系词选用又是学生容易出错的地方．29．（2014•丰台区一模）Carl hopes to win the tennis game one day．That is he has been practicing hard．（）A．why B．how C．because D．where【分析】Carl 希望有一天赢得这场网球比赛．这是他一直都在刻苦训练的原因．【解答】答案：A分析句子结构可知，由于此处用在了系动词is之后，故本句为表语从句；在表语从句中，连接副词why作原因状语；后面跟的表示结果"（为什么）…的原因"；how 作方式状语；。