人教版八年级上册英语 Unit 2 重要知识点配套练习题【附答案解析】

人教版八年级上册英语Unit 2重要知识点练习题
目录
知识点一：本单元重点语法知识点练习题 (1)
◆频度副词 (1)
⑴选择题 (1)
⑵选择适当的频度副词填空 (4)
知识点二：本单元重点单词变形练习题 (4)
⑴ 用所给单词的适当形式填空 (4)
⑵用方框中所给单词适当形式填空 (7)
知识点三：本单元重点短语练习题 (8)
⑴根据汉语提示完成句子 (8)
⑵用方框中所给单词和短语填空 (12)
知识点四：本单元重点单词与短语辨析练习题 (14)
Unit 2 How often do you exercise?
知识点一：本单元重点语法知识点练习题
◆频度副词
⑴选择题
( ) 1. I ______ ride a bike to school. But this morning, I walked to school.
A. never
B. hardly
C. seldom
D. usually
【答案】：D
【句意】“我通常骑自行车去学校。

但是今天早晨，我步行去学校”
【解析】考查频度副词的用法。

but表转折，表示“通常”用usually，故选D
( ) 2. —How often do you go skating?
—______ . I can't skate at all.
A. Always
B. Sometimes
C. Seldom
D. Never
【答案】：D
【解析】考查频度副词的用法。

always“总是”；sometimes“有时”；seldom“很少”；never“从不”。

由“I can't skate at all.”我根本不会滑冰。

可知，此处应表示完全否定含义，故选D
( ) 3. —Laura, how often do your family take a trip?
—Hmm, ______ .
A. twice a month
B. since last week
C. for an hour
D. ten days ago
【答案】：A
【解析】考查频度副词的用法。

since last week意为“自从上周以来”；twice a month意为“一月两次”；for an hour意为“一个小时”；ten days ago意为“10天前”。

问句中的how often意为“多久一次"，对表示频率的词语提问，故选A
( ) 4. If my friends have any problems, my door is ______ open to them.
A. seldom
B. sometimes
C. always
D. never
【答案】：C
【解析】考查频度副词的用法。

never “从不”；seldom “很少”；sometimes “有时”；always“总是”。

由句意“如果我的朋友们有什么困难，我总是向他们敞开大门”根据语境得知，此处选C
( ) 5. Although he listened to the old man ______ , he could ______ understand his words.
A. patiently；hardly
B. patient；hard
C. patiently；hard
D. patient；hardly
【答案】：A
【解析】考查频度副词的用法。

patiently副词，意为“耐心地”；patient形容词，意为“有耐心的"；hardly副词，意为“几乎不"；hard作形容词时，意为“硬的；困难的”，hard 作副词时，意为“努力地；强烈地”。

第一个空修饰动词短语listen to，所以用副词，排除B、D两项；由前半句句意“尽管他耐心地听那位老人说话”可知，后半句句意为“但他几乎不能理解他的话”。

故选A
( ) 6. —would you like a glass of cola?
—No, thanks. I ______ drink cola. I cant stand(忍受) its taste.
A. usually
B. never
C. often
D. always
【答案】：B
【句意】“她仔细地听着，但什么也没听见。

”
【解析】考查频度副词的用法。

usually通常；never从不；often经常；always总是。

由答语中的“No, thanks”和“I can't stand（忍受）its taste”不能忍受它的味道，根据语境可知，故选B
( ) 7. —How often do you usually go to work by subway?
—______ . I always take a bus, because there is no subway in this city.
A. Sometimes
B. Often
C. Never
D. Seldom
【答案】：C
【解析】考查频度副词的用法。

sometimes“有时”；often“经常”；always“总是”；never
“从不”；seldom“很少”；由“I always take a bus, because there is no subway in this city.”我总是坐公共汽车，因为这个城市没有地铁。

可知，此处应表示完全否定含义，故选C ( ) 8. “Left-behind” children(留守儿童) ______ see their parents, because their parents work in the cities, leaving them behind in the countryside to be cared for by their grandparents.
A. always
B. hardly ever
C. often
D. usually
【答案】：B
【解析】考查频度副词的用法。

always“总是”；hardly ever“几乎从不”；often“经常”；usually“通常”，由“because their parents work in the cities”因为他们的父母在城市工作，把他们留在农村由祖父母照顾。

可知，此处应表示否定含义，故选B
( ) 9. —I heard you made a new family rule(规则) "Put away your phone while at home ".
—Yes. We were ______ busy checking our mobile phones before, but now we enjoy communicating(沟通) with our family.
A. always
B. never
C. seldom
D. sometimes
【答案】：A
【句意】：—听说你制定了一个新的家规“在家时把手机收起来”。

—对。

以前我们总是忙着看手机，但现在我们喜欢和家人交流。

【解析】考查频度副词的用法。

always“总是”；never“从不，绝不”；seldom“很少”；sometimes“有时”，由“but now we enjoy communicating(沟通) with our family.”但现在我们喜欢和家人交流。

可知，but表转折，此处应表示经常性的行为，故选A
( ) 10. We'll have to say goodbye, my dear friends! But I will ______ forget the days we spent together.
A. always
B. often
C. never
D. usually
【答案】：C
【句意】：我们得说再见了，亲爱的朋友们！但我永远不会忘记我们一起度过的日子
【解析】考查频度副词的用法。

always“总是”；often“经常”；never“从不，绝不”；usually“通常”but表转折，表示“从不，绝不”用never，故选C
⑵选择适当的频度副词填空
1. Milk can help us sleep well, so I __________ (always/ never ) drink milk before going to bed.【句意】“牛奶可以帮助我们睡个好觉，所以我总是在睡觉前喝牛奶。

”
【解析】考查频度副词的用法。

always“总是”；never“从不，绝不”；so意为“所以”，表示“经常性的”用always，故选always
2. Jeff __________ (often/hardly ever) plays chess. It's easy for him.
【句意】“杰夫经常下棋。

对他来说很容易。

”
【解析】考查频度副词的用法。

often“经常”；hardly ever“几乎从不”，由“It's easy for him.”对他来说很容易，可知表示“经常性”用often，故选often
3. Grace sleeps well every night. She __________ (usually/never) stays up late.
【句意】“格蕾丝每晚都睡得很好。

她从不熬夜。

”
【解析】考查频度副词的用法。

usually“通常”；never“从不，绝不”，由“Grace sleeps well every night.”每晚都睡得很好，可知此处表示完全否定含义，故选never
4. I __________ (sometimes/usually) eat a healthy breakfast because my mom makes breakfast for me most of the time.
【句意】“我通常吃健康的早餐，因为我妈妈大部分时间都给我做早餐。

”
【解析】考查频度副词的用法。

sometimes“有时”；usually“通常”，由“most of the time.”大部分时间都给我做早餐，可知此处表示“经常性”用usually，故选usually
5. Mr. and Mrs. Clark are very busy, so they __________ (hardly ever/usually) play sports.
【句意】“克拉克先生和夫人很忙，所以他们很少运动。

”
【解析】考查频度副词的用法。

hardly ever“几乎从不”；usually“通常”，由“Mr. and Mrs. Clark are very busy”克拉克先生和夫人很忙，可知此处表示否定含义，故选hardly ever
知识点二：本单元重点单词变形练习题
⑴ 用所给单词的适当形式填空
1. You'd better think __________ (two) before you take the final action(最后行动).
【句意】“在你采取最后的行动之前，你最好三思而后行”
【解析】考查次数，英语中的“一次”为once；“两次”为twice；三次或三次以上用“基数词+ times”，如three times 三次，many times 许多次。

think twice意为“三思而后行”，故填twice
2. My mother is very busy. She has lots of __________ (housework) to do every day.
【解析】考查名词的用法，lots of意为“许多”后跟可数名词的复数形式或不可数名词，housework“家务”为不可数名词，故不变，填housework
3. Jane likes __________ (stay) at home to read books and she hardly ever __________ (go) out.
【解析】考查动词的用法，like doing sth.“喜欢做某事”；第二空主语为she且为一般现在时，要用动词第三人称单数，故填staying；goes
4. What a hot day today! How about __________ (go) swimming together?
【解析】考查How about的用法，表征求性建议用“What/How about+doing sth.”意为“做某事怎么样？”，其后跟动词的话要用动词-ing形式，故填going
5. The young man __________ (exercise) three times a week.
【解析】考查动词的时态，根据“three times a week.”可知为一般现在式，其主语The young man为第三人称单数，谓语要用动词第三人称单数，故填exercises
6. Would you like to do some __________ (shop) on Saturday morning?
【句意】星期六上午你想去购物吗？
【解析】do some shopping=go shopping意为“去购物”，故填shopping
7. Tom, you need to sleep for at __________ (little) eight hours every night.
【句意】汤姆，你每晚至少要睡八个小时。

【解析】little的最高级为least，at least 意为“至少”，故填least
8. She __________ (go) swimming with her mother __________ (two) a week.
【句意】她每周和她妈妈去游泳两次
【解析】一周两次“twice a week”；此句为一般现在时，其主语She为第三人称单数，谓语要用动词第三人称单数，故填goes；twice
9. He __________ (usual) goes to the library on weekends.
【解析】usual“通常的；寻常的”；其副词为usually“通常地；正常地”为频度副词，频度副词一般位于情态动词、助动词、连系动词之后，实义动词之前。

根据题意可知，故填usually
10. The old man __________ (die) last month.
【解析】考查时态。

根据“last month”可知，时态为一般过去式，die动词“死亡”；名词为death，过去式为died，故填died
11. I like to go __________ (camp)with my family.
【句意】喜欢和家人一起去露营。

【解析】go camping意为“去野营”，这属于“go+动词-ing”一类的用法：go climbing 去爬山；go skating去滑冰；go hiking去远足；go sightseeing 去观光；go surfing去冲浪；go bike riding骑自行车旅行；此处故填camping
12. Do you know the __________ (result) of the school football game?
【句意】你知道学校足球赛的结果吗？
【解析】result可数名词，意为“结果；后果”，短语the result of 意为“……的结果”，as a result意为“结果是，作为结果”。

此处故填result
13. You will see different kinds of __________ (television) in the museum.
【句意】你会在博物馆里看到各种各样的电视。

【解析】kind此处作可数名词，意为“种类；类别”此外，kind of意为“一点儿”, a kind of意为“一种；一类”, different kinds of意为"不同种类的"。

all kinds of意为“各种类型的”后跟名词的复数形式，television可数名词意为“电视机”；此处故填televisions
14. Do you have a __________ (health) lifestyle?
【句意】你有健康的生活方式吗？
【解析】health为不可数名词，意为“健康，健康状况”，“keep/stay/be in good health =keep/stay/be healthy”保持健康。

health+y→healthy变成了形容词，意为“健康的，健壮的”同义词为fit，反义词为unhealthy或者weak。

healthy变y为i+ly→healthily变成了副词，意为“健康地，健壮地”。

此处为“健康的生活方式”，用形容词，故填healthy
15. Han Han is my favorite __________ . He __________ a very popular book last year.(write)
【句意】韩寒是我最喜欢的作家。

他去年写了一本很受欢迎的书。

【解析】write动词“书写；写作”，过去式为wrote，名词为writer“作家；作者”，根据语境可知，第一空为名词，第二空为动词，由“last year”可知，为过去式，故填：writer；wrote
16. Linda spent twenty dollars __________ (buy) a dictionary yesterday.
【句意】琳达昨天花了二十美元买了一本字典。

【解析】spend作动词，除了意为“度过”以外，还可意为“花费"，常指花费时间或金钱。

spend的常用结构有：❶主语(人)+spend +时间/金钱+ on sth. ❷主语(人)+spend + 时间/金钱+ (in)doing sth. 故填(in) buying
⑵用方框中所给单词适当形式填空
I'm interested in playing sports. I like playing every sport, but my 1. __________ one is tennis. Behind my house, there is a tennis court (网球场). Three or four 2. __________ a week, I play tennis happily with my sister or my brother on this court after school. We always enjoy 3. __________. However, sometimes I play with my father too, because he also 4. __________ playing tennis. He always 5 __________ to us, “Tennis is a popular sport for both young and old people” Besides 6. __________ sports, I also like taking a trip with my friends. From Monday to Friday, I don't have a lot of free time. But I have a lot of free time on 7 __________ . So 8.__________ a week, we go for a ride to villages far away from our city. We 9. __________ like the fresh air and beautiful views in the countryside. After we get back from the trip, I often spend time watching TV at home, because there are many 10. __________ shows on Saturdays and Sundays.
I enjoy my free time!
【答案】1. favorite 2. times 3. ourselves 4. likes 5. says
6. playing
7. weekends
8. once
9. really 10. wonderful
There are many ways for us to exercise. We can walk, run, swim or jump. We have a lot of choices(选择). 1. __________ do we like exercising? Because it's good for our health. In addition(此外), exercise makes us tired, so we can have a much 2. __________ sleep at night.
Walking is a good kind of exercise. You may take 3. __________ walk in the park. You can walk on the beach to enjoy 4. __________ . You can also walk with your friends because this will make your exercise more fun 5. __________ walking alone.
You may like to run. If you do, take care of your 6. __________ . Make sure you have the right shoes.
Some people like to swim. 7. __________ , others don't like to be in the water. If you like this kind of exercise, you'd better ask someone 8. __________ with you. They can give you help when you 9. __________ in danger.
Jumping rope(跳绳) and riding bikes are also good for your body. Find out which one you like better and keep on 10. __________ it. You will know what makes you healthy.
【答案】1. Why 2. better 3. was 4. yourself 5. than
6. feet
7. However
8. to go
9. are 10. doing
知识点三：本单元重点短语练习题
⑴根据汉语提示完成句子
1. 也许她在图书馆。

________________________ she is in the library.
【答案】：Maybe
2. 他买了许多水果，如苹果、桃子等。

He bought a lot of fruit ________________________ apples and peaches.
【答案】：such as
3. 海伦昨晚熬夜了。

Helen ________________________ last night
【答案】：stayed up late
4. 她早上几乎不锻炼。

She ________________________ exercises in the morning.【答案】：hardly ever
5. 这个班有20多名学生每天做运动。

Tom always ________________________ .
【答案】：help his mom with housework
6. 你想要和我一起去购物吗？。

Would you like to ________________________ with me?【答案】：go shopping
7. 你经常看电影吗？
Do you often ________________________ ?
【答案】：go to the movie/see a film
8. 所有人都玩得开心吗？
Did everyone ________________________ ?
【答案】：have a good/great/wonderful time
9. 你多久去一次动物园？
________________________ do you go to the zoo?
【答案】：How often
10. 每天做运动是一个好习惯。

Doing sports every day is a ________________________ .【答案】：good habit
11. 他们去公园里放风筝一周两次。

They fly kites in the park ________________________ .
【答案】：twice a week
12. 做体育运动对我们的健康有好处。

Playing sports ________________________ our health.
【答案】：is good for
13. 你一周锻炼几个小时？
________________________ do you exercise a week？
【答案】：How many hours
14. 迈克一星期上网四到六次。

Mike ________________________ four to six times a week.
【答案】：goes online
15. 这个男孩上周去看牙医了。

The boy ________________________ last week.
【答案】：went to the dentist
16. 蒂娜每天锻炼不到二个小时。

Tina exercises ________________________ every day.
【答案】：less than two hours
17. 她每天看书超过两个时。

She reads books for ________________________ two hours a day.
【答案】：more than
18. 马克总是早早上床睡觉，早早起床。

Mark always ________________________ early and ________________________ early.
【答案】：goes to bed；gets up
19. 他今天早上吃了一顿健康的早餐。

He ate ________________________ this morning.
【答案】：a healthy breakfast
20 我每天锻炼。

__________________________________________________________________________________________________________【答案】：I exercise every day.
21. 我每个月去一次图书馆。

__________________________________________________________________________________________________________【答案】：I go to the library once a month.
22. 她多久吃一次垃圾食品？
__________________________________________________________________________________________________________【答案】：How often does she eat junk food?
23. 你每晚睡几个小时？
__________________________________________________________________________________________________________【答案】：How many hours do you sleep every night?
24. 我弟弟想喝牛奶。

__________________________________________________________________________________________________________【答案】：My little brother wants to drink milk.
25. 下班后，苏珊喜欢上网。

__________________________________________________________________________________________________________【答案】：Susan likes going online after work.
26. 杰克周末根本不锻炼。

__________________________________________________________________________________________________________【答案】：Jack doesn't exercise on weekends at all.
27. 马克喜欢做运动，例如游泳、跑步和(打)篮球。

__________________________________________________________________________________________________________【答案】：Mark likes playing sports, such as swimming, running and (playing) basketball.
28. 我认为锻炼是保持健康的最好方法。

__________________________________________________________________________________________________________【答案】：I think exercise is the best way to keep healthy.
29. 我很惊讶她从来不看电视。

__________________________________________________________________________________________________________
【答案】：I'm surprised that she never watches TV.
⑵用方框中所给单词和短语填空
1. Tom is lazy and he ________________ cleans the room.
2. What do you think of ________________ .
3. Can the students ________________ in class?
4. She likes to ________________ with her mother on Saturday.
5. We play volleyball ________________ a week at school.
1. 【解析】句意：汤姆很懒，几乎从不打扫房间。

由“Tom is lazy”故此处应全部否定，应填hardly ever
2. 【解析】How do you like…？意为“你认为…怎么样”，与“How do you feel about…?”和"What do you think of...?”同义。

根据语境应填swing dance
3. 【解析】句意：学生们能在课堂上使用互联网吗？根据语境应填use the Internet
4. 【解析】句意：星期六她喜欢和妈妈一起去购物。

根据语境应填go shopping
5. 【解析】句意：我们在学校每周打三次排球。

根据语境应填three times
1. It ________________ rains in our hometown, so we need water very much.
2. —What do you ________________ do in the evening?
—I usually watch TV.
3. He is never late for school. In fact, he is ________________ the first one to get to school.
4. I have dance lessons ________________ , on Tuesday.
5. Generally (通常)，students don't go to school ________________ .
1. 【解析】句意：我们家乡很少下雨，所以我们非常需要水。

根据语境应填hardly ever
2. 【解析】句意：你晚上通常做什么？根据语境应填usually
3. 【解析】句意：他上学从不迟到。

事实上，他总是第一个到学校的。

根据语境应填always
4. 【解析】句意：我每周上一次舞蹈课，星期二。

根据语境应填once a week
5. 【解析】句意：一般来说，学生周末不上学。

根据语境应填on weekends
1. —________________ milk do you want?
—I want a cup of milk.
2. —________________subjects do you have on Mondays, Gina?
—I always have seven subjects.
3. —________________do they go to the movies?
—Once a month.
4. —________________do you exercise every day?
—For about two hours
5. —________________are you?
—I'm fifteen years old.
1. 【答案】How much
2. 【答案】How many
3. 【答案】How often
4. 【答案】How long
5. 【答案】How old
知识点四：本单元重点单词与短语辨析练习题
1. —Millie, ________ do you take the course(上这门课) in DIY?
—Every Saturday afternoon.
A. how far
B. how long
C. how much
D. how often
【答案】：D
【解析】how far“多远”；how long“多长时间”；how much问数量“多少”/问价格“多少钱”；how often“多久一次”，由“Every Saturday afternoon.”，可知how often符合题意。

故选D
2. —________ do you have a meeting?
—Once a week.
A. How far
B. How often
C. How long
D. How soon
【答案】：B
【解析】How far“多远”；How often“多久一次”；How long“多长时间”；How soon “多久以后”由“Once a week.”，可知how often符合题意。

故选B
3. —Would you like two strong black coffees(浓咖啡)?
—No, thanks. I ________ drink it. It hurts my stomach(胃).
A. almost
B. hardly
C. only
D. exactly
【答案】：B
【解析】考查副词的辨析。

almost“几乎；差不多”，hardly“几乎不”，only“只有；仅仅”；exactly“确切地”，由“It hurts my stomach”，可知我不能喝咖啡，hardly符合题意。

故选B
4. Here ________ the results ________ the student activity survey.
A. is；with
B. are；of
C. is；of
D. are；with
【答案】：B
【解析】考查倒装与介词的用法。

here置于句首，主语是名词时，其后的主语和谓语颠倒位置，构成倒装结构，这种倒装句的真正主语是后面的名词，谓语取决于后面的名词，由“the results”可知为复数，第一空应填are。

result可数名词，意为“结果；后果”，短语the result of ……意为“……的结果”，第二空应该填of，故选B。

5. I have two brothers. One is a policeman, and ________ is a teacher.
A. another
B. other
C. the other
D. others
【答案】：C
【解析】根据题意可知，“我有两个兄弟。

一个是警察，另一个是老师。

”表示两件东西或两个人中“一个……另一个……”这一意思用“one……the other……”，故选C
❶ 表示两件东西或两个人中“一个……另一个……”这一意思用"one……the other……"
⑴⑴
one the other
❷ 表示许多人或物中的“一部分”和“另一部分(并非全部)”，用"some…others/some…”意为“一些……另一些……”。

⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴
some others/some
❸ 表示许多人或物中的“一部分”和“其余的全部”，用"some…the others/the rest…”意为“一些……其余的……”。

⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴⑴
some the others/the rest
❹ 表示不定数目中的“一个”与“另一个”，用"one……another……"
⑴⑴⑴⑴⑴⑴⑴⑴
one another
6. I think it is the best way ________.
A. relaxing
B. to relax
C. relaxed
D.relax
【答案】：B
【解析】the best way to do sth.“做某事的最好方法。

”故选B
7. Linda spends half an hour ________ morning every day.
A. runs
B. to run
C. run
D. running
【答案】：D
【解析】spend作动词，除了意为“度过”以外，还可意为“花费"，常指花费时间或金钱。

spend的常用结构有：❶主语(人)+spend +时间/金钱+ on sth. ❷主语(人)+spend + 时间/金钱+ (in)doing sth. 故选D
8.The answers ________ our question about ________ TV were also interesting.
A. of；watching
B. to；watched
C. to；watching
D. of；watched
【答案】：C
【句意】：关于看电视的问题的答案也很有趣。

【解析】the answers to…questions 为固定搭配，意为“……问题的答案/回答”，to在此为介词，意为“指向；对于；针对”。

about介词，后跟动词-ing形式，故选C
9.The bright moonlight shone(照耀) ________ window into my bedroom.
A. past
B. through
C. across
D. by
【答案】：B
【句意】：明亮的月光透过窗户照进我的卧室
【解析】考查介词的用法。

past“经过”；through“通过”；across“表面通过”；by“在……旁边”，故选B。

through指“穿过、通过…”，强调从物体中间穿过。

across指“穿过、通过…”，强调从物体表面穿过。

over指“越过…”，强调从物体上方越过。

past指“经过…”，强调从物体旁边经过。

10.—Mario, your mobile phone(手机) is ringing.
—Wait a minute. It is dangerous for us ________ it while crossing the street.
A. answering
B. answer
C. to answer
D. answered
【答案】：C
【句意】：—马里奥，你的手机响了。

—等一下。

我们过马路时接电话是危险的。

【解析】“It is+形容词+for sb.+to do sth.”意为“做某事对某人来说是……的”，故得知答案为C
11.________ Lily is only five years old, ________ she can swim very well.
A. Though；but
B. Though；/
C. Because；so
D. So；/
【答案】：B
【句意】：尽管莉莉只有五岁，但她游泳游得很好。

【解析】考查连词的用法。

although连词，意为“虽然；尽管”，引导让步状语从句。

含although/though不能与but在同一个句子中使用。

故选B。

12.I am going to have ________ picnic on ________ Sunday.
A. the；an
B. an；the
C. a；/
D. an；/
【答案】：C
【句意】：星期天我要去野餐。

【解析】考查冠词的用法。

have a picnic“去野炊”；具体的某一天要用on，中间不能加冠词，故选C
13.I could ________ control(控制) my feelings at the moment. The movie reminds me of my childhood.
A. really
B. nearly
C. slowly
D. hardly
【答案】：D
【句意】：此刻我几乎控制不住自己的感情。

这部电影使我想起了我的童年。

【解析】really“事实上，真正地”；nearly“几乎，差不多”想相当于almost；slowly“缓慢地”；hardly“几乎不，几乎没有”根据语境，故选D.
14.—I want to watch TV the whole day after the long journey.
—You shouldn't watch TV too much. It's bad ________ your eyes.
A. on
B. in
C. for
D. with
【答案】：C
【句意】：—长途旅行后我想看一整天电视。

—你不应该看太多电视。

对你的眼睛不好。

【解析】考查介词的用法。

be good for“对……有益”其反义词为be bad for“对……坏处”根据题意可知，故选C。

15.—I tried several ways to work out the math problem, but ________ of them worked.
—Never give up. I believe you'll make it.
A. all
B. each
C. none
D. neither
【答案】：C
【句意】：—试过几种方法来解这道数学题，但都不管用
—永不放弃。

我相信你会成功的。

【解析】考查代词的用法。

all“全、都（三者以上）”；each“两者或两者以上中的每一个”；none“一个也没有（三者以上全部否定）”可和Of连用，后跟不可数名词或可数名词复数。

neither“两者都不”；根据题意可知，故选C。

16.Ken was ________ late for school. The bell rang right after he entered the classroom.
A. still
B. always
C. already
D. almost
【答案】：D
【句意】：肯上学几乎迟到了。

他一进教室铃就响了。

【解析】still“还是，仍然”；always“总是”；already“已经”；almost“几乎;差不多”根据题意可知，故选D
17.Wu Dajing, a ________ Chinese skater, set(创造) a new world record(记录) at the Short Track World Cup last year.
A. 26-years-old
B. 26 year old
C. 26-year-old
D. 26 years old
【答案】：C
【句意】：在去年的短道世界杯上,26岁的中国滑冰运动员吴大靖创造了一项新的世界纪录。

【解析】“基数词+名词+形容词”构成复合形容词，由“基数词+名词+形容词”的复合形
容词，词与词之间用连字符连接，其中的名词必须用单数，在句中常作定语。

根据题意可知，故选C
18.My daughter studies ________ . She ________ goes to sleep before 11 p. m.
A. hard；hard
B. hard；hardly
C. hardly；hardly
D. hardly；hard
【答案】：B
【句意】：我女儿学习很努力。

晚上11点之前她几乎不睡觉。

【解析】hard作副词意为“努力地；大量地；猛烈地”，还可作形容词意为“困难的，硬的，难懂的”；hardly作副词意为“几乎不，几乎没有”，根据题意可知，故选B。

19.Betty usually exercises for an hour in the morning, but ________ she does that for 40 minutes.
A. some times
B. sometimes
C. sometime
D. some time
【答案】：B
【句意】：贝蒂通常早上锻炼一小时，但有时锻炼40分钟。

【解析】some times“几次；几倍”；sometimes“有时候”；sometime“在某一时刻”；some time“一段时间”根据题意可知，故选B。

20.—Do you think that math problem was difficult?
—Yes, I could ________ work it out.
A. hardly
B. easily
C. finally
D. nearly
【答案】：A
【句意】：—你认为那道数学题难吗？
—是的，我很难弄明白。

【解析】hardly“几乎不，几乎没有”；easily“容易地”；finally“最后”；nearly“几乎；差不多”根据题意可知，故选A。

21.—How often does Lara play the trumpet（小号）?
— ________ once or ________ a week. I'm not sure.
A. May be；twice
B. Maybe；twice
C. Maybe；two times
D. May be；two times
【答案】：B
【句意】：—劳拉多久吹一次小号？
—可能一周一两次。

我不确定。

【解析】maybe副词，作状语，意为“或许；大概；能”，常位于句首。

may be属于“情态动词+动词原形”结构，作谓语，意为“可能是；也许是”。

“二次”意为“twice”，根据题意可知，故选B。

22.Gina's grandmother is ________ 70 years old, but she looks healthy and young.
A. at all
B. at once
C. at most
D. at least
【答案】：D
【句意】：吉娜的祖母至少70岁了，但她看起来健康年轻。

【解析】at all“全然，根本，究竟”，用于否定句、条件句、疑问句等的句末；at once“立即；马上”；at most“至多;最多”；at least“至少”，根据题意可知，故选D
23.Don't ________ too late to watch TV. It's bad for your health
A. call up
B. wake up
C. stay up
D. get up
【答案】：C
【句意】：不要熬夜看电视。

这对你的健康有害
【解析】call up“打电话”；wake up“唤醒；弄醒”；stay up“熬夜”；get up“起床”，根据题意可知，故选C。