【分析】正确答案为A。在时间名词和地点名词后是否用关系副词要看它在定语从句中充当什么句子成分。一般说来，若用作主语或宾语，用关系代词；若用作状语，则用关系副词。上面一题中的动词 spent 缺宾语，故应用关系代词 which或that。比较下面一题，由于空格后的句子不缺少主语或宾语，所以选关系副词when：
She says that she’ll never forget the time ________ she works as a secretary in our company. A. which B. when C. how D. where 请再做一组试题(答案均选A)：
(1) Our company will move to a tall building _______ we bought last month. A. which B. when C. how D. where 选A，which 在定语从句中用作动词 bought 的宾语。
(2) Our company will move to a tall building _______ has just been complete. A. which B. when C. how D. where 选A，which 在定语从句中用作主语。
(3) Our company will move to a tall building _______ we worked two years ago. A. where B. when C. that D. which 选A，where 在定语从句中用作状语。
时间或地点名词后一定要用where, when来引导定语从句吗
我们有的初学者在学习定语从句时，误认为时间名词后就一定要用 when 来引导定语从句，地点名词后就一定要用 where 来引导定语从句。其实不一定。如：
a. I will never forget the days __________ I lived in the country. b. I will never forget the days __________ I spent in the country.
A. that，that B. when，when C. that，when D. when，that 此题应选D。容易误选B。考生往往错误地认为，时间或地点名词后的定语从句就一定要用关系副词when或where 来引导。注意在选择关系副词when 时，考生要明确两个问题：一是先行词是否是指时间或地点的名词，二是when，where在定语从句中是否用作状语。
a句中的定语从句主语和宾语齐全，所以可用表时间的状语(when)，而b句中的定语从句，显然 spent缺宾语，所以选关系代词that。
考生从以上分析中应明确这样一点：选择关系词时一定要看它在定语从句中充当什么成分。尤其是当先行词为表时间或地点的名词时，千万不要想当然地认为一定要用关系副词when和where来引导定语从句。再如：
1. a. This is the school ________ I studied last year. b. This is the school ________ I visited last year.
A. that，that B. where，where C. that，where D. where，that 2. a. I still remember the time ________ he was born. b. I still remember the time ________ he told me.
A. that，that B. when，when C. that，when D. when，that 答案：1. D 2. D
能用what引导定语从句吗
what 能引导定语从句吗？我们可以说 all that 和 all what 吗？我们来看看这个句子： He told me all __________ he had seen there.
A. that B. which C. what D. when 此题应选 A。容易误选C。这里的 B(which)，D(when) 比较好排除。
选项 B 错，因为当先行词为不定代词 all，little，much 等时，要用关系代词 that，不用which。
选项 D 错，因为它是关系副词，只能在定语从句中作状语，而这里的定语从句缺宾语(即seen缺宾语)，所以不能选 D。
至于选项 C(what)，是考生最容易出错的，这是因为考生在平时的阅读中，经常可以见到类似这样的句子：
He told me all he had seen there. He told me what he had seen there.
由于没有完全理解，结果将以上两类句型混在一起。
选项 C 错的原因在于 what 不是关系词，所以它不能引导定语从句。但值得注意的是：what 有时相当于“名词(先行词)+关系代词”：
他把一切都给了我。 正：He gave me what he had.
正：He gave me everything that he had. 这就是你要的东西。 正：This is what you want. 正：This is the thing that you want.
以上实例告诉我们，what 有时相当于“先行词+关系代词”，同时这也告诉我们，这样用的 what 前不能再有先行词(即what 不能引导定语从句)。
一道非常容易出错的定语从句考题
请看下面这道题，名词place后面该用什么关系词来引导定语从句：
He likes living alone, and says that he wants to go and live in a place _________ nobody knows.
A. where B. that C. when D. what
有的同学一看到 place 是表示“地点”的名词，于是就毫不犹豫地选了A，但是错了，最佳答案应是B。表示“地点”的名词后到底是用 where 还是用 that 或 which 来引导定语从句，原则上应注意以下两点：
一是看关系词的句法功能。由于 where 是关系副词，它在定语从句中用作状语，而that 和 which 是关系代词，它们在定语从句中用作主语或宾语。所以区别是关系副词还是关系代词的关键就是看定语从句是否缺主语或宾语，若缺主语或宾语则用关系代词，若不缺主语或宾语则用关系副词。比较：
(1) This is the room _________I lived ten years ago.
A. that B. where C. who D. what (2) This is the room _________I lived in ten years ago.
A. that B. where C. who D. what (3) This is the room _________I bought ten years ago.
A. that B. where C. who D. what (4) This is the room _________I visited ten years ago.
A. that B. where C. who D. what (5) This is the room _________I was born ten years ago.
A. that B. where C. who D. what
第(1)题选B，因为 live 是不及物动词，它无需接宾语；第(2)题选A，因为虽然 live 不及物，但live in 却是及物，它应有自己的宾语；第(3)(4)题也应选A，因为 buy 和 visit均为及物动词，它们应有自己的宾语；第(5)应选B，因为 be born 无需有自己的宾语。
二要看句意。一般说来，句子是否缺宾语，主要是看定语从句中的动词是否为及物动词或带有介词等，但问题是有些动词既可用作及物动词，又可用作不及物动词，它是否需要带宾语则要视句意而定。比较：
This is the school where I studied five years ago. 这是我五年前读过书的学校。（句中 study 用作不及物动词，意为“学习”或“读书”）
This is the school that I studied five years ago. 这是我五年前研究过的那所学校。(句中 study 为及物动词，意为“研究”)
现在我们回到上面的试题来看一看，从理论上说，动词 know 可用作及物和不及物动词，也就是说它可以带宾语也可以不带宾语。但根据本句的意思（“他喜欢一个人生活，并说他要去一个没有知道的地方”），know 应为及物动词，因为从语意上它要带 place 作其宾语。
做题时当心定语从句的干扰
有这样一道题，这个 to 的后面该什么呢？
The letter they were looking forward to _________ at last.
A. arrived B. arriving C. had arrived D. arrive 分析：对于此题，基础稍差的同学可能选D，认为空格前的 to 是不定式符号，所以后接动词原形；基础稍好的同学可能会选B，知道 look forward to 是短语，意为“盼望”，其中的 to 是介词，而不是不定式符号，所以后接动名词；只有基础扎实、语感好、而且细心的同学才会选A，诚如上面所说，look forward to 中的 to 是介词，而不是不定式符号，所以后接动词作宾语时，要用动名词，而不用动词原形。但问题是此句中的动词 arrive 不是介词 to 的宾语，而是句子的谓语。句子的正解分析是：the letter 为句子主语，they were looking forward to 是修饰主语的定语从句(介词 to 的宾语是引导该定语从句的关系代词 that，被省略)，arrived 是句子谓语。请看以下试题：
(1) The professor you referred to _________ just now.
A. comes B. come C. coming D. came
答案选D，句子主语为 the professor，you referred to 为修饰 the professor 的定语从句，空白处填 came，为句子谓语。
(2) The theory he sticks to _________ to be of no use in our studies.
A. proves B. prove C. proving D. be proved 答案选A，he sticks to 是修饰主语 the theory 的定语从句，句子的基本结构为 The theory proves to be of no use in our studies.
(3) The work he devoted his time to _________ worth praising.
A. was B. be C. being D. been 答案选A，he devoted his time to 是修饰主语 the work 的定语从句。句子的基本结构为 The work was worth praising.
It’s time后接从句的几点用法说明
先看一道试题：
It’s time the child __________ to bed.
A. goes B. going C. went D. to go 此题应选C。关于It’s time＋that从句，注意以下几点： 1. 从句谓语通常用过去时态或should＋动词原形： It’s time we started. 我们该动身了。
It is time that you left here. 你该离开这儿了。 It’s time you studied hard. 你该努力学习了。
有时也用 should+动词原形或用过去进行时，有时甚至将 should 省略(即只用动词原形，为非正式的美国口语)：
我们该走了。
正：It is time we left. (常见)
正：It is time we should leave. (可用) 正：It is time we were leaving. (可用)
正：It is time we leave. (少见，非正式美国口语) 2. 其他几点注意处：(www.yygrammar.com)
(1) 其中的 It is 有时根据情况也可改为 It was，其后的时态不受影响： 你该上床睡觉了。
正：It is time you went to bed. (指现在而言) 正：It was time you went to bed. (指过去而言) (2) time 前可以用 high，about 等修饰。
It is high time you told her the truth. 你该把真相告诉她了。 It is about time that I wrote her a letter. 我该给她写封信了。
most of them还是most of which
请看看下面这道题，答案是 most of them 还是 most of which：
The growing speed of a plant is influenced by a number of factors, ______ are beyond our control.
A. most of them B. most of which C. most of what D. most of that