高中英语定冠词专项复习强化练习及答案

这是一份高中英语定冠词专项复习强化练习及答案，共18页。
动词时态专项复习：定冠词
第一部分:1-50 专项练习 第二部分:51-100全面解析

1．If we sit in________front of the bus, we'll have________better view.
A．/; the B．/; a C．the; a D．the; the
2．With _____ help of my teacher, I have made great progress.
A．the B．a C．an D．/
3．— _______ expensive mobile phone it is！
—Yes, but I think _______ style is quite fashionable.
A．What a; a B．How; the C．What an; the D．How an; the
4．The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9-storeyed building.
A．a; the B．the; the C．/; a D．the; a
5．I wonder what it feels like to be one of ____ really rich. The Jenkinsons already have two Rolls Royces and now they are buying ____ third!
A．the, a B．the, the C．/, a D．/, the
6．I suffered from _____ terrible cold that day and my friends told me to go to _____ doctor's after work.
A．不填; the B．a; the C．a; 不填 D．不填; 不填
7．College students should be encouraged to use _____ Internet as _____ resource when planning a term paper.
A．the; a B．/; the C．the; the D．a; a
8．In 1860s, the Italian archaeologist Giuseppe Fiorelli was made director of the Pompeii dig.
A．the; / B．the; the C．/; / D．/; the
9．It was ___struggle for him to finish _______experiment, with the room in ________mess after he finished it.
A．the; an; / B．a; the; a C．a; an; / D．/; the; a
10．________Beijing you see today is quite ________ different city from what it used to be.
A．The; / B．/; the C．The; a D．A; a
11．To tell _________truth, it is _______struggle for Jack to get ready in such a short time.
A．the; real a B．a; a real C．the; really a D．a; a really
12．It is well known that knowledge is________treasure house,but practice is________key to it.
A．a；the B．the；the C．a；/ D．/；the
13．In ______ 1940s, in ________twenties, my grandfather had to move to the northeast of China to make _________ living.
A．the; the; a B．the; his; the C．the; his; a D．a; his; the
14．All through history, big changes have taken place in ________ English language, especially when Henry IV became ________ King of England.
A．the; the B．不填; the C．the; 不填 D．an; 不填
15．All through history, big changes have taken place in English language, especially when Henry IV became King of England.
A．the; the B．不填;the C．the; 不填 D．an; 不填
16．The director had the girl play ________ important part in the film when she was at ________ age of thirteen.
A．an; an B．the; / C．an; the D．the; an
17．—Kate, are you only child in your family?
—Yes, but new baby is on the way.
A．a; the B．an; the C．the; a D．the; the
18．Last year our team went to Seattle and won ______ second place. Personally, I think the team that was ______ champion cheated.
A．/, the B．the, the C．a, the D．the, /
19．Life is like ocean: only strong-willed can reach the other shore.
A．an; the B．the; a C．the ；/ D．/； a
20．The paper is due next month, and I am working seven days ______ week, often long into ______night.
A．a; the B．the; 不填 C．a; a D．不填; the
21．The government set up _____ organization named Angel to help _____ homeless three years ago.
A．the; 不填 B．不填；the C．an; a D．an; the
22．—How about Christmas evening party?
—I should say it was___ success.
A．a;a B．the; a C．a;/ D．the; 1
23．I can't tell you _______ way to Wilson's because we don't have _______ Wilson.
A．the, the B．the, a C．the, / D．a, the
24．In ________ 1600's, Shakespeare made use of ________ wider vocabulary than ever before.
A．the; / B．/ ;/ C．the; a D．/; a
25．At one point, the host asked people in the audience if Nicholas Winton had saved their lives. _______ shocked Winton watched as _______majority of people rose to their feet and, after ________, everyone standing up bowed low to Winton.
A．The, a, that B．The, a, which C．A, the, that D．A, the, which
26．According to the recent report, one of the world's rare animals, ________ panda, is in ____ danger of dying out.
A．a; the B．不填; a C．不填; the D．the; 不填
27．Nowadays people are more likely to go to ____ mall than visit the tailor when shopping for clothes, so tailors have adapted to ____ new reality.
A．the; a B．/; the C．the; the D．a; a
28．I made ________ acquaintance of his sister at the party and then I fell in ________ love with her.
A．an；a B．the；a C．the；/ D．an；/
29．The computer is ______ useful tool for our study, for we can find a lot of information on ______ Internet.
A．a; the B．a; a C．the; 不填 D．不填; the
30．In many places in China, bicycle is still poplar means of transportation.
A．a; the B．/; a C．the; a D．the; the
31．After they each had said _____few words, Professor White took ______floor and answered the questions.
A．a; / B．a; a C．a; the D．/; a
32．—How about __________ party?
—Cool! It was really __________ great fun! Pity you weren't there.
A．a; a B．the; a C．the; / D．a; /
33．—How do you find the story about ________ blind?
—It is so encouraging that I try to read it without ________ second thought.
A．a; a B．a; the C．the; a D．the; the
34．It's ______ great surprise when I heard ______ news about the accident.
A．the; a B．a; the C．a; 不填 D．the; the
35．This is ________ book I borrowed yesterday. Isn't it ________ interesting one?
A．the; the B．the; a C．a; the D．the; an
36．Chatting online can be _____fun, but kids must be sure they stay safe on _____web.
A．不填; the B．a; the C．不填; a D．a; a
37．We went right round to the west coast by ______ sea instead of driving across ______ continent.
A．the; the B．the; 不填 C．不填; the D．不填; 不填
38．The biggest whale is ______ blue whale, which grows to be about 29 meters long — the height of ______ 9-story building.
A．a; a B．a; the C．the; a D．the; the
39．It was ___________ cold winter night and the moon was shining brightly across ___________ night sky.
A．不填；a B．a; the C．the; a D．the; 不填
40．Not having thought of ________ solution to the problem，he isn't in ________ mood for the party tonight.
A．a；the B．the；a C．a；/ D．the；/
41．They buried _____ dead and took _____ wounded people to the hospital at once.
A．a; the B．the; the C．the; a D．不填; the
42．The new law has come into effect, and number of wild animals here is on ____increase now.
A．the; the B．a; the C．the; / D．a; /
43．—It's reported that over 1 billion people watched the live opening ceremony of______2010 South Africa World Cup on TV.
—Yes, news came as________shock to me.
A．the; the B．/; a C．the; a D．a; the
44．It is said that ______ bridge was built in ______ Ming Dynasty.
A．a; a B．the; the C．a; the D．the; a
45．—Kathleen, ________Mr. Heller is waiting for you outside.
—Just a second. I'm on ________ phone.
A．a; the B．/; the C．a; / D．/; /
46．Chatting online can be ________ fun, but kids must be sure they stay safe on ________ web.
A．/; a B．a; the C．/; the D．a; a
47．Jane's grandmother had wanted to write ________ children's book for many years, but one thing or another always got in ________ way.
A．a; / B．the；the C．/; the D．a；the
48．I've found that many people are still in _____ habit of writing silly things in _____ public places.
A．the; the B．/; / C．the; / D．/; the
49．My family used to live in ________ city of Shanghai but now have moved to _____ countryside.
A．a; a B．the; the C．a; the D．the; 不填
50．China, ______ largest developing country in the world, has made great progress in ______ area of space exploration.
A．a; an B．the; the C．the; an D．a; the

答案解析部分
1．C
2．A
3．C
4．D
5．A
6．B
7．A
8．A
9．B
10．C
11．C
12．A
13．C
14．C
15．C
16．C
17．C
18．A
19．A
20．A
21．D
22．B
23．B
24．C
25．C
26．D
27．C
28．C
29．A
30．C
31．C
32．C
33．C
34．B
35．D
36．A
37．C
38．C
39．B
40．A
41．B
42．A
43．C
44．B
45．A
46．C
47．D
48．C
49．B
50．B

动词时态专项复习：定冠词
第一部分:1-50 专项练习 第二部分:51-100全面解析

1．If we sit in________front of the bus, we'll have________better view.
A．/; the B．/; a C．the; a D．the; the

全面分析：考查冠词。句意：如果我们坐在汽车的前面，我们就会看到较美的风景。此处指汽车里面的前面，故第一个空用the，view“风景、自然景色”，此处表泛指，故填a。
2．With _____ help of my teacher, I have made great progress.
A．the B．a C．an D．/

全面分析：考查冠词。句意：在老师的帮助下，我取得巨大的进步；with the help of 在。帮助下，故选A项。

3．— _______ expensive mobile phone it is！
—Yes, but I think _______ style is quite fashionable.
A．What a; a B．How; the C．What an; the D．How an; the

全面分析：——这是多么贵的手机啊！——是的，但是我认为这款是十分的时尚。第一句是感叹句，核心词是mobile phone因此用感叹词what，同时它是可数名词单数，所以加不定冠词；第二空特指这款手机机型，因此运用定冠词。故选 C。

4．The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9-storeyed building.
A．a; the B．the; the C．/; a D．the; a

全面分析：考查冠词。句意：最大的鲸鱼是蓝鲸，可以长到29米长——一座九层楼的高度。第一空用定冠词the表示特指；第二空并没有限定是哪座楼，用不定冠词a。故选D。
5．I wonder what it feels like to be one of ____ really rich. The Jenkinsons already have two Rolls Royces and now they are buying ____ third!
A．the, a B．the, the C．/, a D．/, the

全面分析：我想知道成为富人的感觉如何。Jenkinsons家已经有两辆劳斯莱斯了,还想买第三辆。the rich指富人，是一个集合名词；a third表示“另一个”，当空格处表示“another, again”时，序数词前加不定冠词。故选A。

6．I suffered from _____ terrible cold that day and my friends told me to go to _____ doctor's after work.
A．不填; the B．a; the C．a; 不填 D．不填; 不填

全面分析：那天我遭受严重的感冒，并且我的朋友告诉我下班后去看医生。第一空是泛指，用不定冠词，a terrible cold“严重的感冒”； go to the doctor's，固定短语，“去看医生”，故选B。

7．College students should be encouraged to use _____ Internet as _____ resource when planning a term paper.
A．the; a B．/; the C．the; the D．a; a

全面分析：考查冠词的用法。Internet是专有名词，所以前面要用定冠词the；as a resource可以理解为作为一种资源，不用特指，所以用不定冠词。句意：当规划学期论文的时候，大学生应该被鼓励把网络作为一种资源来利用。故选A。
8．In 1860s, the Italian archaeologist Giuseppe Fiorelli was made director of the Pompeii dig.
A．the; / B．the; the C．/; / D．/; the

全面分析：十九世纪六十年代，意大利考古学家Giuseppe Fiorelli被任命为挖掘庞培古城的负责人。1860s不是年份，翻译为十九世纪六十年代，需要在前面加定冠词the；而后一个空属于这种情况：名词在句中作表语、同位语时，当它所表示的职位、头衔等是独一无二的，则不用冠词。此处Giuseppe Fiorelli是唯一的负责人，故不用加冠词，故答案为A。

9．It was ___struggle for him to finish _______experiment, with the room in ________mess after he finished it.
A．the; an; / B．a; the; a C．a; an; / D．/; the; a

全面分析：完成这个实验对他来说是一次折磨，他完成之后房间里一片混乱。“struggle”是泛指，用a ；“experiment”是特指，用the；in a mess“一片混乱”，故选B。

10．________Beijing you see today is quite ________ different city from what it used to be.
A．The; / B．/; the C．The; a D．A; a

全面分析： C考查冠词的用法。第一个空特指“今天你所见到的北京”，故用定冠词the；第二个空表示“一座与过去不同的城市”，故用不定冠词a。
11．To tell _________truth, it is _______struggle for Jack to get ready in such a short time.
A．the; real a B．a; a real C．the; really a D．a; a really

全面分析：句意是：说实话，对杰克来说这么短的时间做好准备真是难事。第一空考查固定词组：to tell the truth“说实话”，第二空考查struggle做名词“难事”，是可数的，故选C。

12．It is well known that knowledge is________treasure house,but practice is________key to it.
A．a；the B．the；the C．a；/ D．/；the

全面分析：考查冠词。句意为：众所周知,知识是宝库,而实践是开启宝库的钥匙。第一空是泛指；第二空是特指,即“开启宝库的钥匙”。
13．In ______ 1940s, in ________twenties, my grandfather had to move to the northeast of China to make _________ living.
A．the; the; a B．the; his; the C．the; his; a D．a; his; the

全面分析：二十世纪四十年代，二十岁时我的祖父不得不搬到中国东北谋生。年代前要加定冠词the。in one's +基数词的复数“在某人多大时”。make a living“谋生”。以上都为固定用法。故选C。

14．All through history, big changes have taken place in ________ English language, especially when Henry IV became ________ King of England.
A．the; the B．不填; the C．the; 不填 D．an; 不填

全面分析：在历史上，英语经历了几次大的变化，尤其在亨利四世成为英国国王时。In English="in" the English language用英语；第二空不用冠词，是因为独一无二的官职名词作表语或者补足语的时候，不需要用冠词。故选C。

15．All through history, big changes have taken place in English language, especially when Henry IV became King of England.
A．the; the B．不填;the C．the; 不填 D．an; 不填

全面分析：在历史上，英语经历了几次大的变化，尤其在亨利四世成为英国国王时。In English="in" the English language用英语；第二空不用冠词，是因为独一无二的官职名词作表语或者补足语的时候，不需要用冠词。故选C。

16．The director had the girl play ________ important part in the film when she was at ________ age of thirteen.
A．an; an B．the; / C．an; the D．the; an

全面分析：当这个女孩十三岁时，导演让她在电影中扮演一个重要的角色。play an important part in“在……中扮演重要角色”，important为元音音素开头单词，因此使用不定冠词an；短语at the age of sb.“在某人多大年纪时”，用定冠词the；综上，选C。

17．—Kate, are you only child in your family?
—Yes, but new baby is on the way.
A．a; the B．an; the C．the; a D．the; the

全面分析：——Kate，你是家里唯一的孩子吗？——是的,但是一个婴儿要出生了。定冠词the表特指，不定冠词a，an表泛指或表数量"一"，a用于辅音音素前，an用于元音音素前；"家里唯一的小孩"是特指，用the；"一个新婴儿"表数量"一"，new的第一个音是辅音/n/，故选C。


18．Last year our team went to Seattle and won ______ second place. Personally, I think the team that was ______ champion cheated.
A．/, the B．the, the C．a, the D．the, /

全面分析：去年我们的队去西雅图，赢了第二。就我个人而言，我认为，冠军队作弊了。固定搭配：second place第二名；the champion冠军。故选A。

19．Life is like ocean: only strong-willed can reach the other shore.
A．an; the B．the; a C．the ；/ D．/； a

全面分析：考查冠词。生活就像一个海洋，只有强大意志的人才能到达另一边。ocean 以元音开头；the +形容词，表示一类人，故选A。

2） the +形容词，表示一类人。the +形容词做主语时后面的谓语动词用复数形式。the young年轻人；the injured受伤的人。The homeless are over there.无家可归的人在那边。
20．The paper is due next month, and I am working seven days ______ week, often long into ______night.
A．a; the B．the; 不填 C．a; a D．不填; the

全面分析：我的论文下个月就要交，我现在一周工作七天，还经常熬夜到深夜。第一空a表示“每一”；into the night固定短语，“到深夜”，故选A。

21．The government set up _____ organization named Angel to help _____ homeless three years ago.
A．the; 不填 B．不填；the C．an; a D．an; the

全面分析：三年以前，这个政府建立了一个名为“天使”的组织，来帮助无家可归的人。“一个组织”是泛指，且organization首字母发音是元音，所以第一个空填an；第二个空the + 形容词，表示一类人，选D。

22．—How about Christmas evening party?
—I should say it was___ success.
A．a;a B．the; a C．a;/ D．the; 1

全面分析：—那个圣诞晚会怎么样？—应该说那个圣诞晚会很成功。第—空表示特指那个圣诞聚会；第二空后的success是可数名词，指一件成功的事或者成功的人。选B。

23．I can't tell you _______ way to Wilson's because we don't have _______ Wilson.
A．the, the B．the, a C．the, / D．a, the

全面分析：我不能告诉你去威尔逊的路，因为我们没有一个叫威尔逊的。去威尔逊家的道路是特定的，故选择定冠词；本村没有叫做威尔逊的人。叫威尔逊的人有很多，不具有唯一性，故选择不定冠词。B项正确。

24．In ________ 1600's, Shakespeare made use of ________ wider vocabulary than ever before.
A．the; / B．/ ;/ C．the; a D．/; a

全面分析：在17世纪，莎士比亚用的词汇量比以前任何时期都大。第一空in the 1600's表示“在17世纪”，是固定用法；第二空vocabulary一般按不可数的抽象名词对待，但是当抽象名词带有修饰性的定语时就被具体化为区别于其他同类事物的另一种。此处的vocabulary 前有 wider 修饰，意思是相对于 narrower vocabulary（不够宽泛的词汇）的另一种“更为宽泛的词汇”，因此前面需要加不定冠词a。故C正确。

25．At one point, the host asked people in the audience if Nicholas Winton had saved their lives. _______ shocked Winton watched as _______majority of people rose to their feet and, after ________, everyone standing up bowed low to Winton.
A．The, a, that B．The, a, which C．A, the, that D．A, the, which

全面分析：有一次，主持人问观众尼古拉斯·温顿是否救了他们一命。温顿震惊地看着大多数人站起来，之后，每个站起来的人都向温顿鞠躬。第一空是泛指，表示一个惊讶的温顿，用不定冠词a；第二空是固定短语，the majority of“大多数”；第三空用指示代词that，指代前面提到的事，故选C。

26．According to the recent report, one of the world's rare animals, ________ panda, is in ____ danger of dying out.
A．a; the B．不填; a C．不填; the D．the; 不填

全面分析：根据最近的报导，珍稀动物之一，熊猫，有灭绝的危险。第一空填the，the+可数名词单数，可以表示“一个类别”；第二空不填，in danger of固定短语，“有.....的危险”，故选D。

27．Nowadays people are more likely to go to ____ mall than visit the tailor when shopping for clothes, so tailors have adapted to ____ new reality.
A．the; a B．/; the C．the; the D．a; a

全面分析：考查冠词；句意：现在当人们购物时更有可能去购物中心而不是裁缝店，因此裁缝已经接受这个事实。第一个空the mall 购物中心，表示特指，与裁缝店进行对比；而第二个空表示特指，购衣不进裁缝店而去购物中心的事实，故选C项。
28．I made ________ acquaintance of his sister at the party and then I fell in ________ love with her.
A．an；a B．the；a C．the；/ D．an；/

全面分析：考查冠词。固定搭配：make the acquaintance of与某人结识，表示特指用定冠词the；fall in love with喜欢上…，爱上…，此处的love是抽象名词，不用冠词。根据句意可知选C。

29．The computer is ______ useful tool for our study, for we can find a lot of information on ______ Internet.
A．a; the B．a; a C．the; 不填 D．不填; the

全面分析：今天电脑对我们的学习是一种有用的工具，因为我们在因特网上能找到许多资料。不定冠词a/an表示某一类人或某事物中的任何一个,经常用在第一次提到某人或某物时,用不定冠词起介绍作用，表示一个。a用于辅音音素前an用于元音音素前。useful，辅音音素开头，故第一空填a； on the Internet. 固定短语，“在因特网上”，故选A。

30．In many places in China, bicycle is still poplar means of transportation.
A．a; the B．/; a C．the; a D．the; the

全面分析：在中国的许多地方，自行车一直是最流行的交通工具。第一空为类指，表自行车，用“the/a＋单数可数名词”或“可数名词复数”形式均可；第二空为泛指，表示一种工具，故用不定冠词a。因此选C。

31．After they each had said _____few words, Professor White took ______floor and answered the questions.
A．a; / B．a; a C．a; the D．/; a

全面分析：在他们各自说了一些话之后，怀特教授开始发言了。a few固定搭配“一些”，表示肯定意义；take the floor固定短语搭配，“起立发言，演说”，故答案为C。

32．—How about __________ party?
—Cool! It was really __________ great fun! Pity you weren't there.
A．a; a B．the; a C．the; / D．a; /

全面分析：——那次聚会怎么样？ ——棒极了！真的很有趣！可惜你当时不在场。由语境中动词的过去式和答句中的“可惜你当时不在场”可知谈论的是已经举行过的那次聚会，故第一空为特指，用定冠词the；第二空后的名词fun为不可数名词，且表泛指，前面不加冠词。故选C。

33．—How do you find the story about ________ blind?
—It is so encouraging that I try to read it without ________ second thought.
A．a; a B．a; the C．the; a D．the; the

全面分析：—你觉得关于盲人的故事怎么样？—它是如此鼓舞人心，以至于我不假思索想去阅读一下。指代“盲人”，英语中用“the+形容词”；“a+序数词”表示又一次，再一次。故选C。

34．It's ______ great surprise when I heard ______ news about the accident.
A．the; a B．a; the C．a; 不填 D．the; the

全面分析：当我听到事故的消息时,我感到非常惊讶。第一空是抽象名词具体化，a surprise“一个令人吃惊的人，一件令人吃惊的事”；第二空是特指，故用定冠词，选B。

35．This is ________ book I borrowed yesterday. Isn't it ________ interesting one?
A．the; the B．the; a C．a; the D．the; an

全面分析：这是我昨天借的那本书。是不是很有趣？第一个空是特指昨天借的那本书，用the；第二空表示一本有趣的书，interesting开头是元音音素，要用an，故选D。

36．Chatting online can be _____fun, but kids must be sure they stay safe on _____web.
A．不填; the B．a; the C．不填; a D．a; a

全面分析：网上聊天可能很有趣，但是必须确保孩子们在网上安全。第一个空fun是形容词，用作be动词后的表语，不用冠词；on the web固定短语，"互联网上，所以第二个空填定冠词the，故选A。

37．We went right round to the west coast by ______ sea instead of driving across ______ continent.
A．the; the B．the; 不填 C．不填; the D．不填; 不填

全面分析：我们没有开车穿过那个大陆，而是直接乘船去了西海岸。第一个空不填，by sea = by ship乘船，不加定冠词，第二个空填the，特指横渡的那个州。选C。

38．The biggest whale is ______ blue whale, which grows to be about 29 meters long — the height of ______ 9-story building.
A．a; a B．a; the C．the; a D．the; the

全面分析：最大的鲸鱼是蓝鲸，它可以长到29米长，有9层楼那么高。第一空用the+n表示类别，是指blue whale 这一类动物；第二空用a表示泛指。故选C。

39．It was ___________ cold winter night and the moon was shining brightly across ___________ night sky.
A．不填；a B．a; the C．the; a D．the; 不填

全面分析：句意:是在一个寒冷的夜晚,月亮明亮地照耀着夜空。冠词a/an表示泛指,“—个…夜晚”为泛指,故 a cold winter night;“夜空"表示特指,故用 the night sky,故选B。


40．Not having thought of ________ solution to the problem，he isn't in ________ mood for the party tonight.
A．a；the B．the；a C．a；/ D．the；/

全面分析：由于没有想到解决问题的办法，他没有心情参加今晚的晚会。a solution to 固定短语，“问题的一个答案”； be not in the mood 固定短语，“没有心情”。故选A。


41．They buried _____ dead and took _____ wounded people to the hospital at once.
A．a; the B．the; the C．the; a D．不填; the

全面分析：他们埋葬了死者，并立即把伤员送到医院。英语中常用the+adj.表示一类人/物。在本句中the dead，指的是“死者”，而the wound则指的是“伤者。”故选B。

42．The new law has come into effect, and number of wild animals here is on ____increase now.
A．the; the B．a; the C．the; / D．a; /

全面分析：新的法律已经生效，野生动物的数量正在增加。由谓语动词is可知主语是the number of...，the number of...。固定短语“……的数量”；on the increase固定短语“在增加”。根据语境可知，故选A。

43．—It's reported that over 1 billion people watched the live opening ceremony of______2010 South Africa World Cup on TV.
—Yes, news came as________shock to me.
A．the; the B．/; a C．the; a D．a; the

全面分析：考查冠词。第一空特指2010年南非世界杯。第二空后的shock具体指指一件让人震惊的事情。句意：—据报道超过10亿人观看了2010年南非世界杯的开幕式。—是的。这个消息对我们是一件让人震惊的事情。故C正确。
44．It is said that ______ bridge was built in ______ Ming Dynasty.
A．a; a B．the; the C．a; the D．the; a

全面分析：据说，这座桥建于明朝。根据句子的语境，bridge是指具体某一座桥，属特指，故用the；某个朝代的前面要用the。故选B。

45．—Kathleen, ________Mr. Heller is waiting for you outside.
—Just a second. I'm on ________ phone.
A．a; the B．/; the C．a; / D．/; /

全面分析：——Kathleen，一个姓Heller的先生在外边正等着你。——稍等，我正在等电话。a与Mr或Mrs连用，表示一个姓......的人，on the phone固定短语，“在打电话”，故选A。


46．Chatting online can be ________ fun, but kids must be sure they stay safe on ________ web.
A．/; a B．a; the C．/; the D．a; a

全面分析：考查冠词。句意：在线聊天可能很有趣，但是孩子们必须确保网页安全。fun是不可数名词，前面不加冠词；web表示“网页”，前面要加定冠词the。故答案选C。

47．Jane's grandmother had wanted to write ________ children's book for many years, but one thing or another always got in ________ way.
A．a; / B．the；the C．/; the D．a；the

全面分析：句意：多年来，简的奶奶想写一本有关于儿童的书，但总是被这样或那样的原因阻碍了。第一个空使用不定冠词表泛指，第二个in the way 固定短语，“挡道或阻碍”。定冠词用于特指或者是固定搭配，不定冠词用于泛指。选D。

48．I've found that many people are still in _____ habit of writing silly things in _____ public places.
A．the; the B．/; / C．the; / D．/; the

全面分析：许多人仍然还有在公共地方写糊涂字的习惯。in the habit of固定短语，“有……的习惯”，the表示特指；public places为复数名词短语，前面不需要冠词。故选C。

49．My family used to live in ________ city of Shanghai but now have moved to _____ countryside.
A．a; a B．the; the C．a; the D．the; 不填

全面分析：我家过去住在上海市, 但现在搬到了农村。第一空, city为可数名词, 此处特指“上海市”应用定冠词, 第一空填the；第二空后文countryside指“与城市相对而言的农村”, 前面要用定冠词the, 故第二空填the。故选B。

50．China, ______ largest developing country in the world, has made great progress in ______ area of space exploration.
A．a; an B．the; the C．the; an D．a; the

全面分析：中国作为世界上最大的发展中国家，在太空探索领域取得了巨大的进步。形容词的最高级前需用定冠词the，因此，第一空用the；in the area of固定短语，“在......领域”，故选B。