高中英语三大从句总结+练习复习过程

高中英语三大从句总
结+练习
高考英语定语从句、名词性从句、状语从句综合练习
一定语从句
1.定义：在复合句中，修饰名词或代词的从句为定语从句，如：
The novels that were written by Lu Xun were not easy to understand.
2.定语从句的构成要素
（1）先行词：
（2）关系词：
（3）从句：
3.定语从句的关系词
that which
（1）关系代词 who whom
whose as
when
（2）关系副词 where
why
4.关系词的句法功能：
（1）关系代词在定语从句中作______________，关系副词在定语从句中作_______________，关系代词作宾语时可以省略；
（2）关系副词在定语从句中作______________。

5.定语从句解题方法
找准先行词，将先行词带入定语从句，使定语从句成为一个完整的句子，再分析从句的句子成分。

若从句缺主语或宾语选用_____________________，若从句却状语，选用
_____________________。

二、名词性从句
1.名词性从句分类
（1）主语从句
（2）宾语从句
（3）表语从句
（4）同位语从句
2.名词性从句的语序
名词性从句使用________________语序
3.名词性从句的引导词
连接词：that, whether, if
名从引导词连接代词：what, which, who, whom, whose, whatever, whichever, whomever, whomever 连接副词：when, where, why, how, whenever, wherever, however
4.名词性从句引导词的句法功能
（1）连接词：
（2）连接代词：
（3）连接副词
5.名词性从句解题方法
三、状语从句
1.状语从句的引导词：
时间状语从句：
地点状语从句：
原因状语从句：
让步状语从句：
条件状语从句：
结果状语从句：
目的状语从句：
比较状语从句：
方式状语从句：
2.状语从句解题方法
1.（2012，大纲卷）The evening, _________ I will tell you more about later, I ended up working very late.
A. that
B. which
C. what
D. when
2.（2010福建）We should respect food and think about the people who don’t have _____we have here and
treat food nicely.
A. that
B. which
C. what
D. whether
3.（2008湖南）__________ the Internet is of great help, I don’t think it’s a good idea to spend too much time
on it.
A. If
B. While
C. Because
D. As
4.（2008重庆）They will fly to Washington, _________ they plan to stay for tow or three days.
A. where
B. there
C. which
D. when
5.（2006，北京）Women ________ drink more than two cups of coffee a day have a greater chance of
having heart disease than those _________don’t.
A. who; /
B. /; who
C. who; who
D. /; /
6.（2011北京）________Barbara offers to her fans is honesty and happiness.
A. Which
B. What
C. That
D. Whom
7.（2013重庆）_________ we have enough evidence, we can’t win the case.
A. Once
B. As long as
C. Unless
D. Since
8.（2010上海）One reason for her preference for city life is _________ she can have easy access to places
like shops and restaurants.
A. that
B. how
C. what
D. why
9.（2013，大纲卷）When I arrived, Bryan took me to see the house _________ I would be staying.
A. what
B. when
C. where
D. which
10.（2006，大纲卷）—What did your parents think about your decisions?
— They always let me do ________ they think I should do.
A. when
B. that
C. how
D. what
11.（2011浙江）One Friday, we were packing to leave for a weekend away _______ my daughter heard cries
for help.
A. after
B. while
C. since
D. when
12. The young couple, who returned my lost wallet, left _______ I could ask for their names.
A. while
B. before
C. after
D. since
13.（2012，福建）The air quality, ________ is shown in the report, has improved over the past two months.
A. that
B. it
C. as
D. what
14.（2013天津）_______ I want to tell you is the deep love and respect I have for my parents.
A. That
B. Which
C. Whether
D. What
15.（2006大纲卷）We thought there were 35 students in the dinning hall, ________, in fact, there were 40.
A. while
B. whether
C. what
D. which
16.（2009浙江）I have reached a point in my life _________ I am supposed to make decisions of my own.
A. which
B. where
C. how
D. why
17.（2010江苏）The newly-built café, the walls of ________are painted light green, is really a peaceful place
for us, especially after hard work.
A. that
B. it
C. what
D. which
18.（2008浙江）________ wants to stay in a hotel has to pay their own way.
A. Anyone
B. The one
C. Whoever
D. Who
19.（2009上海）You can’t borrow books from the school library _______ you get your student card.
A. before
B. if
C. while
D. as
20.（2006辽宁）________ makes the shops different is that it offers more personal services.
A. What
B. Who
C. Whatever
D. Whoever
21.（2012，浙江）We are living in an age ________ more information is available with greater ease than ever
before.
A. why
B. when
C. to whom
D. on which
22.（2010四川）How much one enjoy himself traveling depends largely on ________ he goes with, whether
his friends or relatives.
A. what
B. who
C. how
D. why
23.（2008山东）You’d better not leave the medicine ________ kids can get at it.
A. even if
B. which
C. where
D. so that
24.（2014天津）_______ you start eating in a healthier way, weight control will become much easier.
A. Unless
B. Although
C. Before
D. Once
25.（2010陕西）The old temple ________roof was damaged in a storm is now under repair.
A. where
B. which
C. its
D. whose
26.（2006大纲卷）Please remind me ________ he said he was going. I may be in time to see him off.
A. where
B. when
C. how
D. what
27.（2006天津）If you are travelling _______ the customs are really foreign to your own, please do as the
Romans do.
A. in which
B. what
C. when
D. where
28.（2010福建）Stephen Hawking believes that the earth is unlikely to be the only planet ________ life has
developed gradually.
A. that
B. where
C. which
D. whose
29.（2013北京）Many countries are setting up national parks _________ animals and plants can be protected.
A. when
B. which
C. whose
D. where
30.（2010北京）Part of the reason Charles Dickens loved his own novel, David Copperfield, was ________ it
was rather closely modeled on his own life.
A. what
B. that
C. why
D. whether
31.（2009重庆）Peter was so excited ________ he received an invitation from his friend to visit Chongqing.
A. where
B. that
C. why
D. when
32.（2010大纲卷）We haven’t discussed yet _________ we are going to place our new furniture.
A. that
B. which
C. w hat
D. where
33.（2008湖南）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
34.（2008重庆）People in Chongqing are proud of ________ they have achieved in the past ten years.
A. that
B. which
C. what
D. how
35.（2011四川）As is reported, it is 100 years _________ Qinghua Univeristy was founded.
A. when
B. before
C. after
D. since
36.（2014浙江）Cathy had quit her job when her son was born _______ she could stay home and raise her family.
A. now that
B. as if
C. only if
D. so that
37.（2011江西）She showed the visitors around the museum, the construction _________ had taken more
than three years.
A. for which
B. with which
C. of which
D. to which
38.（2011湖南）Before a problem can be solved, it must be obvious _________ the problem itself is.
A. what
B. that
C. which
D. why
39.（2014安徽）The meaning of the word “nice” changed a few times it finally came to include the
sense “pleasant”.
A. before
B. after
C. since
D. while
40.（2007宁夏）Some pre-school children go to a day care centre, _________ they learn simple games and
songs.
A. then
B. there
C. while
D. where
41.（2008上海）We went through a period _________ communications were very difficult in the rural areas.
A. for which
B. with which
C. in which
D. whose
42.（2013北京）________ makes the book so extraordinary is the creative imagination of the writer.
A. That
B. What
C. Who
D. Which
43.（2014江苏）Lessons can be learned to face the future, ________ history cannot be changed.
A. though
B. as
C. since
D. unless
44.（2011四川）Our teachers always tell us to believe in ________ we do and who we are if we want to
succeed.
A. why
B. how
C. what
D. which
45. Half an hour later, Lucy still couldn't get a taxi ________ the bus had dropped her.
A. until
B. when
C. although
D. where
从句综合练习：
1.（2011湖南）Julie was good at German, French and Russian, all of _________ she spoke fluently.
A. who
B. whom
C. which
D. that
2.（2006，大纲卷）See the flags on top of the building? That was _______ we did this morning.
A. when
B. which
C. where
D. what
3.（2013，天津）_________ small, the company has about 1,000 buyers in over 30 countries.
A. As
B. If
C. Although
D. Once
4.（2010四川）After graduating from college, I took some time off to go travelling, ______turned out to be a
wise decision
A. that
B. which
C. when
D. where
5. — Do you have anything to say for yourselves?
— Yes, there is one point _________ we must insist on.
A. why
B. where
C. how
D. that
6.（2005广东）Some researchers believe that there is no doubt _________ a cure for AIDS will be found.
A. which
B. what
C. that
D. whether
7.（2009四川）Owen wouldn’t eat anything _________ he cooked it himself.
A. until
B. since
C. unless
D. While
8.（2008上海）As his best friend, I can make accurate guesses about _________ he will do or think.
A. what
B. which
C. whom
D. that
9.（2013，四川）Nowadays people are more concerned about the environment _________ they live.
A. what
B. which
C. when
D. where
10.（2010湖南）Cindy shut the door heavily and burst into tears. No one in the office knew ________ she
was so angry.
A. where
B. whether
C. that
D. why
11.（2009陕西）My parents don’t mind what job I do ________ I am happy.
A. even though
B. as soon as
C. as long as
D. as though
12.（2010北京）_______ they decide which college to go to, students should research the admission
procedures.
A. As
B. While
C. Until
D. Once
13.（2011，山东）The old town has narrow streets and small houses _________ are built close to each other.
A. they
B. where
C. what
D. that
14.（2011山东）We’ve offered her the job, but I don’t know ________ she’ll accept it.
A. where
B. what
C. whether
D. which
15.（2013北京）Don’t turn off the computer before closing all programs, _________ you could have
problems.
A. or
B. and
C. but
D. so
16.（2007江苏）He was educated at the local high school, ________ he went on to Beijing University.
A. after which
B. after that
C. in which
D. in that
17.（2006天津）The Beatles, ________ many of you are old enough to remember, came from Liverpool.
A. what
B. that
C. how
D. as
18.（2006北京）— Could you do me a favor?
— It depends on ________ it is.
A. which
B. whichever
C. what
D. whatever
19.（2011江西）Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to
you.
A. whenever
B. however
C. whichever
D. wherever
20.（2013重庆）__________ struck me most in the movie was the father’s deep love for his son.
A. That
B. It
C. What
D. Which
21.（2005浙江）Jim passed the driving test, ________ surprised everybody in the office.
A. which
B. that
C. this
D. it
22.（2010陕西）It never occurred to me __________ you could succeeded in persuading him to change his
mind.
A. which
B. what
C. that
D. if
23.（2013辽宁）One can always manage to do more things, no matter ________ full one’s schedule is in life.
A. how
B. what
C. when
D. where
24.（2013山东）________ I have to give a speech, I get extremely nervous before I start.
A. Whatever
B. Whenever
C. Whoever
D. However
25.（2006浙江）I was given three books on cooking, the first _________ I really enjoyed.
A. of that
B. of which
C. that
D. which
26.（2010山东）Before the sales start, I made a list of _________ my kids will need for the coming season.
A. why
B. what
C. how
D. which
27.（2013山东）Mark needs to learn Chinese _________ his company is opening a branch in Beijing.
A. unless
B. until
C. although
D. since
28.（2012重庆）Sales director is a position _________ communication ability is just as important as sales
skills.
A. which
B. that
C. when
D. where
29.（2013安徽）From space, the earth looks blue. This is ______ about seventy-one percent of its surface is
covered by water.
A. why
B. how
C. because
D. whether
30.（2014山东）I don’t really like the author,_______ I have to admit his books are very exciting.
A. although
B. unless
C. until
D. once
2015年高考英语定语从句、名词性从句、状语从句综合练习
一定语从句
1.定义：在复合句中，修饰名词或代词的从句为定语从句，如：
The novels that were written by Lu Xun were not easy to understand.
2.定语从句的构成要素
（1）先行词：被修饰的名词或代词（注非限制性定语从句的先行词可能为横线前面的整个内容）（2）关系词：连接主句与从句的词，且在定语从句中充当一定的句子成分；
（3）从句：从句的基本结构为——关系词 + 一个完整的句子
3.定语从句的关系词
that指人或指物which指物
（1）关系代词 who指人（可在从句中作宾语）whom指人（只可在从句中作宾语）
whose谁的，后面加名词，在从句中作定语as指人或指物正如
when表时间
（2）关系副词 where表地点
why表原因
4.关系词的句法功能：
（1）关系代词在定语从句中作主语或宾语，关系副词在定语从句中作状语，关系代词作宾语时可以省略；
（2）关系副词在定语从句中作状语，表示时间、地点、原因等。

5.定语从句解题方法
找准先行词，将先行词带入定语从句，使定语从句成为一个完整的句子，再分析从句的句子成分。

若从句缺主语或宾语选用关系代词，若从句却状语，选用关系副词。

二、名词性从句
1.名词性从句分类
（1）主语从句，在句中充当主语的功能，多用it形式主语；
（2）宾语从句：宾语从句一般位于介词或及物动词之后，为高考重点考查内容；
（3）表语从句：表语从句一般位于系动词之后；
（4）同位语从句：解释说明句中某个抽象名词的具体内容，与定语从句句型结构相同（同位语从句陕西高考英语不作为考查内容）
2.名词性从句的语序
名词性从句使用陈述语序
3.名词性从句的引导词
连接词：that, whether, if
名从引导词连接代词：what, which, who, whom, whose, whatever, whichever, whomever, whomever 连接副词：when, where, why, how, whenever, wherever, however
4.名词性从句引导词的句法功能
（1）连接词：不做句子成分，if与whether在用法上有一定的区别；
（2）连接代词：在名词性从句中作主语、宾语或表语；
（3）连接副词：在名词性从句中作状语。

5.名词性从句解题方法
（1）确定从句类型；
（2）分析从句句子成分；
（3）从句句意与语法结构完整一般选that；从句缺主语、宾语或表语，结合句意选用恰当的连接代词；从句缺状语，结合句意选用恰当的连接副词；
（4）注意特殊考法，如含有宾语从句的反义疑问句等。

三、状语从句
1.状语从句的引导词：
when, while, as, after, before, since, once, until, till, as soon as, the moment, the minute,
every / each time, immediately, directly, instantly
地点状语从句：where, wherever, everywhere
原因状语从句：because, since, as, now that
让步状语从句：though, although, even if, even though, as, whether…or…, no matter what / who / how / where / when, while等
条件状语从句：if, unless, so / as long as, on condition that, suppose / supposing（that）, providing /
provided that等
结果状语从句：so that, so… that…, such…that…
目的状语从句：so that…, in order that…, for fear that…, in case…
比较状语从句：as…as, not / so as…as, …than
方式状语从句：（just as）, as if, as though
2.状语从句解题方法
重点在于句意的理解，大多题目可以根据句意选择。

1.（2012，大纲卷）The evening, _____B____ I will tell you more about later, I ended up working very late.
A. that
B. which
C. what
D. when
2.（2010福建）We should respect food and think about the people who don’t have __C___we have here and
treat food nicely.
A. that
B. which
C. what
D. whether
3.（2008湖南）____B____ the Internet is of great help, I don’t think it’s a good idea to spend too much time
on it.
A. If
B. While
C. Because
D. As
4.（2008重庆）They will fly to Washington, _____A____ they plan to stay for tow or three days.
A. where
B. there
C. which
D. when
5.（2006，北京）Women _____C___ drink more than two cups of coffee a day have a greater chance of
having heart disease than those _________don’t.
A. who; /
B. /; who
C. who; who
D. /; /
6.（2011北京）____B____Barbara offers to her fans is honesty and happiness.
A. Which
B. What
C. That
D. Whom
7.（2013重庆）_____C____ we have enough evidence, we can’t win the case.
A. Once
B. As long as
C. Unless
D. Since
8.（2010上海）One reason for her preference for city life is ____A_____ she ca have easy access to places
like shops and restaurants.
A. that
B. how
C. what
D. why
9.（2013，大纲卷）When I arrived, Bryan took me to see the house _____C____ I would be staying.
A. what
B. when
C. where
D. which
10.（2006，大纲卷）—What did your parents think about your decisions?
— They always let me do ____D____ I think I should.
A. when
B. that
C. how
D. what
11.（2011浙江）One Friday, we were packing to leave for a weekend away ____D___ my daughter heard
cries for help.
A. after
B. while
C. since
D. when
12. （2014陕西）The young couple, who returned my lost wallet, left ____B___ I could ask for their names.
A. while
B. before
C. after
D. since
13.（2012，福建）The air quality, ____C____ is shown in the report, has improved over the past two months.
A. that
B. it
C. as
D. what
14.（2013天津）____D___ I want to tell you is the deep love and respect I have for my parents.
A. That
B. Which
C. Whether
D. What
15.（2006大纲卷）We thought there were 35 students in the dinning hall, ____A____, in fact, there were 40.
A. while
B. whether
C. what
D. which
16.（2009浙江）I have reached a point in my life _____B____ I am supposed to make decisions of my own.
A. which
B. where
C. how
D. why
17.（2010江苏）The newly-built café, the walls of ____D____are painted light green, is really a peaceful
place for us, especially after hard work.
A. that
B. it
C. what
D. which
18.（2008浙江）____C____ wants to stay in a hotel has to pay their own way.
A. Anyone
B. The one
C. Whoever
D. Who
19.（2009上海）You can’t borrow books from the school library ____A___ you get your student card.
A. before
B. if
C. while
D. as
20.（2006辽宁）____A____ makes the shops different is that it offers more personal services.
A. What
B. Who
C. Whatever
D. Whoever
21.（2012，浙江）We are living in an age ____B____ more information is available with greater ease than
ever before.
A. why
B. when
C. to whom
D. on which
22.（2010四川）How much one enjoy himself traveling depends largely on ____B____ he goes with, whether
his friends or relatives.
A. what
B. who
C. how
D. why
23.（2008山东）You’d better not leave the medicine ____C____ kids can get at it.
A. even if
B. which
C. where
D. so that
24.（2014天津）____D___ you start eating in a healthier way, weight control will become much easier.
A. Unless
B. Although
C. Before
D. Once
25.（2010陕西）The old temple ____D____roof was damaged in a storm is now under repair.
A. where
B. which
C. its
D. whose
26.（2006大纲卷）Please remind me ____B____ he said he was going. I may be in time to see him off.
A. where
B. when
C. how
D. what
27.（2006天津）If you are travelling ____D___ the customs are really foreign to your own, please do as the
Romans do.
A. in which
B. what
C. when
D. where
28.（2010福建）Stephen Hawking believes that the earth is unlikely to be the only planet ____B____ life has
developed gradually.
A. that
B. where
C. which
D. whose
29.（2013北京）Many countries are setting up national parks ____D_____ animals and plants can be
protected.
A. when
B. which
C. whose
D. where
30.（2010北京）Part of the reason Charles Dickens loved his own novel, David Copperfield, was ____B____
it was rather closely modeled on his own life.
A. what
B. that
C. why
D. whether
31.（2009重庆）Peter was so excited ____D____ he received an invitation from his friend to visit Chongqing.
A. where
B. that
C. why
D. when
32.（2010大纲卷）We haven’t discussed yet _____D____ we are going to place our new furniture.
A. that
B. which
C. w hat
D. where
33.（2008湖南）The growing speed of a plant is influenced by a number of factors, ____B____ are beyond
our control.
A. most of them
B. most of which
C. most of what
D. most of that
34.（2008重庆）People in Chongqing are proud of ____C____ they have achieved in the past ten years.
A. that
B. which
C. what
D. how
35.（2011四川）As is reported, it is 100 years _____D____ Qinghua Univeristy was founded.
A. when
B. before
C. after
D. since
36.（2014浙江）Cathy had quit her job when her son was born ____D___ she could stay home and raise her family.
A. now that
B. as if
C. only if
D. so that
37.（2011江西）She showed the visitors around the museum, the construction _____C____ had taken more
than three years.
A. for which
B. with which
C. of which
D. to which
38.（2011湖南）Before a problem can be solved, it must be obvious _____A____ the problem itself is.
A. what
B. that
C. which
D. why
39.（2014安徽）The meaning of the word “nice” changed a few times A it finally came to include the
sense “pleasant”.
A. before
B. after
C. since
D. while
40.（2007宁夏）Some pre-school children go to a day care centre, _____D____ they learn simple games and
songs.
A. then
B. there
C. while
D. where
41.（2008上海）We went through a period _____C____ communications were very difficult in the rural areas.
A. for which
B. with which
C. in which
D. whose
42.（2013北京）____B____ makes the book so extraordinary is the creative imagination of the writer.
A. That
B. What
C. Who
D. Which
43.（2014江苏）Lessons can be learned to face the future, ____A____ history cannot be changed.
A. though
B. as
C. since
D. unless
44.（2011四川）Our teachers always tell us to believe in ____C____ we do and who we are if we want to
succeed.
A. why
B. how
C. what
D. which
45. Half an hour later, Lucy still couldn't get a taxi ____D____ the bus had dropped her.
A. until
B. when
C. although
D. where
从句综合练习：
1.（2011湖南）Julie was good at German, French and Russian, all of _____C____ she spoke fluently.
A. who
B. whom
C. which
D. that
2.（2006，大纲卷）See the flags on top of the building? That was ____D___ we did this morning.
A. when
B. which
C. where
D. what
3.（2013，天津）_____C____ small, the company has about 1,000 buyers in over 30 countries.
A. As
B. If
C. Although
D. Once
4.（2010四川）After graduating from college, I took some time off to go travelling, ___B___turned out to be
a wise decision
A. that
B. which
C. when
D. where
5. — Do you have anything to say for yourselves?
— Yes, there is one point _____D____ we must insist on.
A. why
B. where
C. how
D. that
6.（2005广东）Some researchers believe that there is no doubt _____C____ a cure for AIDS will be found.
A. which
B. what
C. that
D. whether
7.（2009四川）Owen wouldn’t eat anything _____C____ he cooked it himself.
A. until
B. since
C. unless
D. while
8.（2008上海）As his best friend, I can make accurate guesses about _____A____ he will do or think.
A. what
B. which
C. whom
D. that
9.（2013，四川）Nowadays people are more concerned about the environment _____D____ they live.
A. what
B. which
C. when
D. where
10.（2010湖南）Cindy shut the door heavily and burst into tears. No one in the office knew ____D____ she
was so angry.
A. where
B. whether
C. that
D. why
11.（2009陕西）My parents don’t mind what job I do ____C____ I am happy.
A. even though
B. as soon as
C. as long as
D. as though
12.（2010北京）____D___ they decide which college to go to, students should research the mission
procedures.
A. As
B. While
C. Until
D. Once
13.（2011，山东）The old town has narrow streets and small houses _____D____ are built close to each other.
A. they
B. where
C. what
D. that
14.（2011山东）We’ve offered her the job, but I don’t know ____C____ she’ll accept it.
A. where
B. what
C. whether
D. which
15.（2013北京）Don’t turn off the computer before closing all programs, _____A____ you could have
problems.
A. or
B. and
C. but
D. so
16.（2007江苏）He was educated at the local high school, ____A____ he went on to Beijing University.
A. after which
B. after that
C. in which
D. in that
17.（2006天津）The Beatles, ____D____ many of you are old enough to remember, came from Liverpool.
A. what
B. that
C. how
D. as
18.（2006北京）— Could you do me a favor?
— It depends on ____C____ it is.
A. which
B. whichever
C. what
D. whatever
19.（2011江西）Please call my secretary to arrange a meeting this afternoon, or ____A____ it is convenient
to you.
A. whenever
B. however
C. whichever
D. wherever
20.（2013重庆）_____C_____ struck me most in the movie was the father’s deep love for his son.
A. That
B. It
C. What
D. Which
21.（2005浙江）Jim passed the driving test, ____A____ surprised everybody in the office.
A. which
B. that
C. this
D. it
22.（2010陕西）It never occurred to me _____C_____ you could succeeded in persuading him to change his
mind.
A. which
B. what
C. that
D. if
23.（2013辽宁）One can always manage to do more things, no matter ____A____ full one’s schedule is in
life.
A. how
B. what
C. when
D. where
24.（2013山东）_____B___ I have to give a speech, I get extremely nervous before I start.
A. Whatever
B. Whenever
C. Whoever
D. However
25.（2006浙江）I was given three books on cooking, the first _____B____ I really enjoyed.
A. of that
B. of which
C. that
D. which
26.（2010山东）Before the sales start, I made a list of _____B____ my kids will need for the coming season.
A. why
B. what
C. how
D. which
27.（2013山东）Mark needs to learn Chinese _____D____ his company is opening a branch in Beijing.
A. unless
B. until
C. although
D. since
28.（2012重庆）Sales director is a position _____D____ communication ability is just as important as sales
skills.
A. which
B. that
C. when
D. where
29.（2013安徽）From space, the earth looks blue. This is ___C___ about seventy-one percent of its surface is
covered by water.
A. why
B. how
C. because
D. whether
30.（2014山东）I don’t really like the author, ____A___ I have to admit his books are very exciting.
A. although
B. unless
C. until
D. once。