定语从句又称为形容词性从句，引导定语从句的关系词有关系代词：who, whom, that, which, as, whose等和关系副词when, where, why等，关系代词在定语从句中充当主语、宾语,表语，定语等；关系副词则在从句中充当状语。定语从句可分为限定性定语从句和非限定性定语从句，关键是看有无逗号把先行词与定语从句分开。若有，是非限定性定语从句，此时关系词不能省略；若无，则是限定性定语从句。

二、考查定语从句中的“介词+关系代词”结构
1、考查该结构中关系代词的选用。若介词放在关系代词之前，关系代词指人时常用whom，指物时常用which。
[典型考题]
①（09海南）She brought with her three friends, none of I had ever met before.
A. them B. who C. whom D. these
②（10江苏）The newly built café, the walls of_______ are painted light green, is really a peaceful place for us, specially after hard work.
A. that B. it C. what D. which
解析：①C。在定语从句中代替先行词friends作介词of的宾语。故用关系代词whom。②D。在定语从句中先行词the newly built café作介词of的宾语。故用关系代词whom。
2、考查该结构中介词的选用。
（1）一般来说，确定关系代词前的介词，可以从以下三方面入手：先行词的意义；从句中的动词固定搭配；句子的意思。
[典型考题]
①( 08上海)We went through a period communications were very difficult in the rural areas.
A.which B.whose C.in which D.with which
②（10山东） Wind power is an ancient source of energy we may return in the near future.
A. on which B. by which C. to which D. from which
③( 06陕西)She was educated at Beijing University, she went on to have her advanced study abroad.
A. after which B. from which C. from that D. after that
解析：①C。把从句补充完整：communications were very difficult in the rural areas in/during the period，可以判断出此处用介词in。此句中介词的选用取决于先行词period。②C。把从句补充完整： we may return to an ancient source of energy in the near future，可以判断出此处用介词to。此句中介词的选用取决于从句中的动词固定搭配return to sth.。③A。主句与定语从句是先后关系，故用after which。。此句中介词的选用取决于句子的意义
（2）表示“整体和部分关系”、“同位关系”或“所属关系”，介词常用of。常见结构：（I）在some, any, few, little, none, all, both, neither, many, most, each等代词或数词的前后可以用of which/whom。（II）the +比较级或最高级前后用of which/whom等。
[典型考题]
①( 05全国I)I have many friends, some are businessmen.
A. of them B. from which C. who of D. of whom
②（04湖北）There are two buildings , stands nearly a hundred feet high .
A．the larger B．the larger of them
C．the larger one that D．the larger of which
解析：① D。先行词friends在定语从句中与some构成所属关系，故用some of whom或of whom some。②D。先行词buildings在定语从句中与比较级the larger构成所属关系，故用the larger of which或of which the larger。


三、考查定语从句的特殊结构
1.考查关于定语从句的分隔结构。命题者主要通过定语从句的分隔考查动词形式的选择和通过先行词的定位，确定定语从句的关系词及介词+关系词的选用。考查动词形式的选择主要表现在以下几方面：定语从句对主谓结构的分隔时的主句谓语动词选择；定语从句对从句中宾补结构的分隔时的非谓语动词；定语从句对主句定语、状语的分隔时的非谓语动词；定语从句对一些固定句式的分隔时的非谓语动词。
①(10上海)Thai is the only way we can imagine the overuse of water in students' bathrooms.
A. reducing B. to reduce C. reduced D. reduce
②(00全国)The managers discussed the plan that they would like to see_____the next year.
A. carry out B. carrying out C. carried out D. carry out
③(10江西)The girl arranged to have piano lessons at the training centre with her sister_____ she would stay for an hour.
A. where B. who C. which D. what
④（05山东）The country life he was used to ____ greatly since 1992.
A. change B. has changed C. changing D. have changed
⑤(07辽宁)You can’t imagine what difficulty we had ____ home in the snowstorm.
A. walked B. walk C. to walk D. walking
解析：①B。此处应该用不定式。the only way to do sth表示“做……的唯一途径”。作定语的不定式被定语从句we can imagine与被修饰词分开了。解答此类题应把定语从句去掉。②C。先行词the plan作see的宾语，此处的see后是复合结构，carry out充当the plan的补足语，并与其构成被动，故用carried out。解答此类题应把先行词还原到定语从句中去。③A。先行词为centre, she would stay for an hour作定语，与其先行词被介词短语隔开了，该从句不缺宾语或主语,故先行词在从句中作地点状语,故用where。为了保持句子平衡，定语从句与先行词往往被介词短语、副词或谓语等分开，解答此类题，关键找准先行词。④B。这里的he was used to是省略了关系代词的定语从句，change充当主句的谓语动词，因与since连用的主句常用现在完成时，同时主语是life,故用has changed。解答此类题应把定语从句去掉。⑤D。结合题意和词义，我们可以断定句中的we had是定语从句，修饰其前的difficulty，很显然，此题考查固定句式have difficulty (in)doing sth.。解答此类题应把先行词还原到定语从句中去看是否是固定句式。
2. 考查带有插入语的定语从句的关系词的选用。做此类题中时，把关系词后的插入语（如：I believe,Ithink,I expect等）去掉进行判断。
[典型考题]
①（05福建）—Is that the small town you often refer to?
—Right, just the one you know I used to work for years.
A．that B．which C．where D．what
解析：①C。you know是插入语，在解题时可以省略，可以看出the one指代the small town在定语从句中作地点状语，故用where
3. 考查省略式定语从句。主从句主语相同时，有时可以省略一些成分，变成“介词+引导词+不定式”的形式。
[典型考题]
①（05湖南）Frank's dream was to have his own shop ____ to produce the workings of his own hands.
A. that B. in which C. by which D. how
解析：①B。题中的先行词是shop,在定语从句中作地点状语，即to produce the workings of his own hands in the shop=he can produce the workings of his own hands in the shop,故用in which,相当于where。

连续十个表情 就有十个昵称币，如此反复即可刷上去。不谢