1．[2014•北京卷] The best moment for the football star was ________ he scored the winning goal.A．where B．whenC．how D．Why 答案：B 考查名词性从句(表语从句) 。根据题干前半部分中的moment一词推断，后面应该说的是“……的时候”，所以本题选B。
2．[2014•北京卷] Some people believe ________has happened before or is happening now will repeat itself in the future.A．whatever B．wheneverC．wherever D．However 答案：A
考查名词性从句(宾语从句)。句意：一些人相信过去发生或现在正发生的事情，将来仍然会重复。宾语从句中缺少主语，并且指的是事件，所以选A。
3.[2014•全国大纲卷] Exactly ________ the potato was introduced into Europe is uncertain, but it wa s probably around 1565.A.whether B.why C.when D.how 答案：C 考查主语从句的连接词。句意：准确地说，土豆是什么时候被引进欧洲的还不确定，但可能是在1565年左右。此处when引导主语从句并在从句中作状语。
4．[2014•福建卷] Pick yourself up.Courage is doing ________ you\'re afraid to do.A．that B．what C．how D．Whether 答案：B
考查名词性从句。句意：振作起来。勇气就是做你害怕去做的事。分析句子结构可知，此处doing后接宾语从句，而从句中do的后面缺少 宾语，故选择B项。
5.[2014•湖南卷] As John Lennon once said，life is ________ happens to you while you are busy making other plans.A.which B.thatC.what D.Where 答案：C 考查名词性从句。句意：正如约翰•列侬曾经说的那样，生活就是当你忙于制订其他计划时所发生在你身上的事情。引导词既要引导表语从句，又要在从句中作主语。故用what。
6．[2014•江苏卷] —What a me! You are always so lazy! —I\'m not to blame, Mum.I am ________ you have made me.A．how B．whatC．that D．who 答案：B 考查表语从句引导词的用法。句意：“多么混乱啊！你总是这么懒！”“我不应当受到责备，妈妈，都是你让我变成这个样子的。”分析句子结构后可知，“_______ _ you have made me”是表语从句，从句中make缺少间接宾语，故用what引导。
7．[2014•山东卷] It is difficult for us to imagine________ life was like for slaves in the ancient world.A．where B．what C．which D．why 答案：B 考查名词性从句。句意：对我们来说很难想象在 古代奴隶的生活是什么样子的。________ life was like for slaves in the ancient world是宾语从句，作imagine的宾语，在宾语从句中，like后缺少成分，故用what。
8.[2014•陕西卷] ________ the delayed flight will take off depends much on the weather.A.Why B.When C.That D.What 答案：B 考查名词性从句。句意：延误了的航班何时 起飞主要取决于天气。所填词引导主语从句，在从句中作时间状语，用when，故选B。
9．[2014•四川卷] Grandma pointed to the hospital and said, “That\'s ________ I was born.”
A．when B．howC．why D．where 答案：D 考查名词性从句。此处考查的是名词性从句中的表语从句，根据语境可知选D项。句意：奶奶指着那个医院说：“那就是我出生的地方。”
10.[2014•天津卷] I think ________ imprees me about his painting is the colours he uses.A.what B.thatC.which D.who 答案：A 考查名词性从句。句意：我认为他的绘画给我留下深刻印象的是他使用的颜色。分析句子结构可知，I think后是宾语从句，从句中谓语动词是is，其前面是主语从句。从句中谓语动词imprees前又缺主语，需用what引导。
11．[2014•浙江卷] “Every time you eat a sweet，drink green tea.” This is ________ my mother used to tell me.A．what B．how C．that D．whether 答案：A 考查名词性从句。句意：母亲过去常常告诉我：“每次吃糖的时候，要喝点儿绿茶。”此处是由wh at引导的表语从句，因为表语从句中缺少tell的间接宾语，所以用what引导，选A 项。
12.[2014 •重庆卷] —Is it true that Mike refused an offer from Yale University yesterday? —Yeah, but I have n o idea ________ he did it; that\'s one of his favourite universities.A.when B.whyC.that D.how 答案：B 考查同位语从句的用法。此题易误选C，但后句对Mike拒绝耶鲁大学的录取意愿感到意外，因为耶鲁大学是Mike最喜欢的大学之一，因此回答者对Mike放弃耶鲁大学感到不可思议。若用that仅表示不知道此事，但事实上已经知道。故选B。
A computer can only do ________ you have instructed it to do.（NMET 2001）
A.how
B.after
C.what
D.when 答案：C。本题考查的是名词性从句作宾语的用法。此句的引导词既作连词又在宾语从句中充当一成分，故what最合适。
14.-I drove to Zhuhai for the air show last week -Is that _________ you had a few days off ? （NMET 99）
A.why
B.when
C.what
D.where 答案：A。此题考查的是从句的用法。根据题意“我上周开车去珠海看航空展去了。”下面一句接着问：“那就是你为什么离开的原因吗？”故用why引导表语从句表示原因。
15.I hate __________ when peope talk with their mouths full.（NMET 98）
A.it
B.that
C.these
D.them 答案：A。本题考查的是形式宾语的用法。题意为“我讨厌人们谈话时嘴里塞满东西”。该空白处没有任何含义，而且已经用了when连接该宾语从句，所以此处只填一个形式宾语it。
16.I think Father would like to know ______ I\'ve been up to so far, so I decide to send him a quick note.
A.which
B.why
C.what
D.How 答案：C。考查宾语从句连词用法，由结构sb.be up to sth.可知，应选what作介词to的宾语。
17.We cannot figure out ______ quite a number of insects, birds, and animals are dying out.
A.that
B.as
C.why
D.when 答案：C。本题考查宾语从句知识，figure out为及物动词，故此句为宾语从句，从句意得知连词在从句中作原因状语，故选why.
18.After Yang Liwei succeeded in circling the earth, _______ our astronauts desire do is walk in space.
A.where
B.what
C.that
D.how 答案：B。此题句子为时间状语从句，全主句的主语是由主语从句来充当的，并且主语从句中不定式动词do缺少宾语，故选what。
