Unit 3 Could you please clean your room 同步练习 2024-2025学年人教版英语八年级下册

八下人教版Unit 3 Could you please clean your room? Section A (1a-2d) 一、根据句意用适当的词填空 1. I’m going ________ be the real me and show the world what it means to be young. 2. There are ________ least five new words in this lesson, so it is difficult for me to understand it. 3. You can’t use my computer right now because I’m working ________ it. 4. Li Hong thinks that online communication is not enough ________ the students. 5. I wanted to catch ________ early train, but I couldn’t get ________ ride to the station. 二、选择适当的词并用其正确形式填空 sweep, mess, floor, fold, rubbish 6. An old man began to collect ________ along the river bank years ago. 7. Peter, the floor is dirty. Could you please ________ it? 8. One day the old man’s hand shook so terribly that he dropped his dish on the ________. 9. The square was in a ________, because the shared bikes are thrown everywhere. 10. She ________ the handkerchief (手帕) carefully and put it in her pocket. 三、根据汉语意思完成句子, 每空一词 11. 在工作日你不能在外待到很晚。 You can’t ________ ________ ________ on weekdays. 12. 戴夫是一个好男孩, 他总是按时完成自己的家庭作业。 Dave is a good boy and he always ________ ________ his homework on time. 13. 当你出去的时候记得把垃圾扔了。 Remember to ________ ________ the trash when you go out. 14. 琳达很懒, 在家从不帮忙。 Linda is so lazy that she never ________ ________ around the house. 四、补全对话 根据下面的对话情景, 在每个空白处填上一个适当的句子, 使对话的意思连贯、完整。 A: Hello. This is Andy speaking. B: Hello, Andy. This is Jack. I am calling to see if you could do me a favor (帮助). A: 15. ___________________________________________? B: Well, I am going to China next week for a holiday. 16.________________________________. Can you help me look after it while I am away? A: With pleasure. But I don’t know how to look after a dog well. 17. ______________________? B: Of course. My dog doesn’t need much care. Just make sure that it gets 3 meals a day. Also take it outside whenever possible. A: I see. Do I have to bathe it? B: 18. ___________________________. You’d better bathe it every other day so that it doesn’t have an unpleasant smell. A: OK. 19. ________________________________. B: I am sure you will. Thank you very much. Section A (3a-3c) 一、根据句意用适当的词填空 1. Could you please take our pet dog for ________ walk after dinner? 2. Could you come over tomorrow? I have something ________ tell you. 3. We didn’t believe what he said. We looked at him ________ surprise. 4. I’ll lend you the magazine as soon ________ I finish reading it. 5. ________ of the two coats fits me. Could you show me another one? 二、用括号内所给词的适当形式填空 6. Emma ________ (throw) her schoolbag on the sofa and went into her room. 7. These special ________ (shirt) can be worn for many days without washing. 8. Our teacher asked Jim ________ (angry) why he was late for school again. 9. I don’t understand the text and neither ________ (do) my brother. 10. After a while, Wilson _________________ (reply), “Though I don’t have much money, I live happily now. ” 三、根据汉语意思和所给提示翻译句子 11. 我们需要分担家务以营造一个干净、舒适的家。 (share, have) 12. 我认为数学和物理一样有趣。 (as. . . as) _________________________________________ 13. 请你去遛遛狗好吗? (could, take) 14. 她总是让灯亮着。(leave, all the time) 15. 昆明四季如春。 (neither. . . nor) 四、完形填空 Should children do chores? People _____21 that children as young as 18 months can help with chores. When people say to those children, “Just look at the paper”, ______22 will pick it up. Some parents think childhood (童年) is just for playing, ______23 they don’t ask their children to do chores. Other parents have a ______24 opinion (意见), but they still give their children no chores. They say, “I know it’s not right, but it’s ______25 to do it by myself!” Most parents believe that chores are a way of ______26 children responsibility (责任), anyway.Children learn to help, share and care about others by _____27 chores. Things like taking care of a pet or a baby and helping make meals are some ______28 of helping others. Well, I think there are some other very good ______29 for children to do chores: To feel good: Doing chores helps children ______30 that they’re part of the team. They feel happier when they do ______31 meaningful for the family. To learn skills: Children will learn ______32 to cook, clean and do other things in the house. These ______33 skills will serve them well throughout their lives. All in all, it’s good ______34 children to grow up doing chores. So start to ______35 your parents with the chores. Act now! 21. A. hope B. find C. wonder D. advise 22. A. I B. he C. we D. they 23. A. if B. so C. because D. although 24. A. different B. common C. similar D. unfair 25. A. cooler B. luckier C. quicker D. funnier 26. A. making B. teaching C. reading D. lending 27. A. sending B. dropping C. allowing D. doing 28. A. examples B. messages C. preparations D. programs 29. A. steps B. activities C. reasons D. resolutions 30. A. decide B. imagine C. disagree D. understand 31. A. something B. anything C. everything D. nothing 32. A. why B. when C. how D. what 33. A. life B. study C. business D. communication 34. A. for B. of C. with D. through 35. A. deal B. help C. agree D. throw Section A (Grammar Focus-4c) Could 用法 表示过去的能力，是can的过去式。 例句: 1. 你八岁的时候会游泳吗? _________ you swim when you were eight? 表示委婉的请求或提供建议。 例句: 2. 请你把桌子上的书递给我好吗? _________ you please pass me the book on the desk? 表示推测，意为“有可能，也许”，语气较委婉。 例句: 3. 我可能下周来，或者下下周。 I _________ _________ next week, or the week after. 表示感情色彩，常用在以why, how开头的疑问句中，表示意外、惊喜，有“竟然”的意思。 例句: 4. 他们怎么能表现得这么不礼貌呢? How ________ they __________ in such an impolite way? 否定形式是couldn't，意为“不能、不会” 注意事项 常用于 “Could you please...?” 句型，表示礼貌地请求别人做事。 例句: 5. 请你给我一些牛奶好吗? ________ you please ________ me some milk? 也可用于“Could I /we…?”句型，用来询问或请求别人是否允许自己做某事。 例句: 6. —让我用一下你的自行车好吗?—_________ I _________ your bike? —可以。这是钥匙。—Sure. Here is the key. 对于Could开头表示“请求”的一般疑问句，作肯定回答常用“Sure./of course./ No problem. / Yes, I (you) can.” 等; 作否定回答常用“Sorry, I can't./I’m afraid I can't.../ I’m afraid not.” 等。 例句: 7. —请你帮我打扫一下房间好吗? —_______ you please _______ me clean the room? —当然可以。/对不起，恐怕我不能。我有很多家庭作业要做。 —________. / Sorry, I'm afraid I can't. I have much homework to do. 一、选择适当的词并用其正确形式填空 pass, borrow, lend, finger, hate, while 1. —I can’t find my knife. Could I ________ yours? —Of course. Here you are. But you must return it to me in 10 minutes. 2. John can ________ his dictionary and expects you to keep it clean. 3. The pianist’s ________ seem to be dancing on the keyboard when he is playing the music. 4. We should stop ________ others because it may bring trouble to us. 5. If Amy ________ the exam, her mom will be happy. 6. I love to listen to rock music ________ I am running in the park. 二、用could 或couldn’t 填空 (注意大小写) 7. —________ I invite my friends to my party on Saturday, Mom? —Of course! That sounds fun. 8. —Excuse me, ________ you please tell me where I can get a dictionary? —Certainly. There’s a bookstore on Shunhe Road. 9. She __________ dress herself until five. 10. Our math teacher ________ be in the library. I saw him walk towards the library. Section B (1a-1e) 一、用括号内所给词的适当形式填空 1. Could I ________ (use) your dictionary to look up (查找) a new word? 2. —Could I share one Dingsheng Cake (定胜糕) with my best friend, Mum? —Of course. The traditional ________ (snack) means “must-win”, wishing you two good luck in the exam. 3. Jane, please help clean up the ________ (live) room if you’re free. 4. I plan ____________ (invite) John to go climbing with me this weekend. 5. 2,000 years ago, Chinese farmers flew kites ____________ (welcome) the New Year and bring good luck to the earth. 二、根据句意用适当的词填空 6. Mrs. Brown enjoyed going to ________ clothes store and buying some clothes for her family. 7. She borrowed 40 dollars ________ her parents and promised to pay it back. 8. How many guests will you invite ________ your housewarming party? 9. France is a wonderful place, ________ many people go there for a holiday. 10. I think the sound from the forest sounds ________ a piece of music. 三、根据汉语意思完成句子, 每空一词 11. 父子俩对这部电影都不感兴趣。 ________ the father ________ the son is interested in the film. 12. 露西的爷爷奶奶年纪大了, 所以她经常和他们一起过周末。 Lucy’s grandparents are old, so she often ________ the weekends ________ them. 13. 请稍等, Tom 正在使用CD 播放器。 Please wait a moment. Tom is ________ ________ ________ ________. 14. 现在是七点钟, 丽塔正在卧室里整理床铺。 It is 7 o ’clock now, and Rita is ________ ________ ________ in the bedroom. 15. 教室里一切静悄悄的, 因为同学们正在进行一场测试。 Everything is quiet in the classroom, because the students are ________ ________ ________. 四、语篇填空 阅读短文, 根据语篇要求填空, 使短文通顺、意思完整。每空限填一词。 Dear Mary, Today I will be very busy. Your grandpa is ill. I have 16. ________ take care of him in the hospital. So please help me do some chores at home. 17. ________, wash your dirty shirt. When it’s dry, please fold 18. ________ and put it in the wardrobe (衣柜). Next, help to sweep the floor. And then take 19. ________ the rubbish. After that, please go out and buy some snacks. I’m sorry that I can’t cook dinner 20. ________ you. So when you’re hungry, please eat them. Yours, Mom Section B (2a-2e) 一、根据句意用适当的词填空 1. They provided food and clothes ________ the poor after the big earthquake. 2. The twin sisters have learned a lot ________ they came to China. 3. Could you please take care ________ my pet dog when I am on vacation? 4. I had a wonderful trip. ___________, I learned the teamwork. 5. I don’t think it is ________ waste of time to just watch the children playing themselves. It is a kind of accompanying (陪伴). 二、用括号内所给词的适当形式填空 6. Your daughter is only 7 years old. You shouldn’t give her so much ________ (stress) of studies. 7. Our country is ____________ (develop) very quickly these years. 8. I’m trying to sleep. Would you mind __________ (turn) down the music? 9. The fourth day of July is the National ______________ (independent) Day of the US. 10. Doing chores can help children understand the meaning of ________ (fair). 11. With my new ____________ (neighbor) help, I found the nearest post office easily. 12. The teacher wanted to find out why Dale’s grades ________ (drop) so badly. 三、根据汉语意思完成句子, 每空一词 13. 我们中的许多人都太过依赖自己的父母。 Many of us ________ ________ our parents too much. 14. 老师们对他们的学生严格是为了帮助他们取得大的进步。 Teachers are strict with their students ________ ________ ________ help them make great progress. 15. 好运属于努力的人。你工作越努力, 你就会越幸运。 Good luck belongs to hard-working people. ________ ________ you work, ________ ________ you will be. 16. 他犯了个大错, 结果丢了工作。 He made one big mistake. _______ ________ ________, he lost his job. 17. 他病倒了, 在医院住了两天了。 He ________ ________ and has been in hospital for two days. 四、语篇填空 阅读短文, 从方框中选择适当的词并用其正确形式填空, 使短文通顺、意思完整。每空限填一词, 每词限用一次。 first, need, important, care, be, different, both, habit, how, final Cooking should be the most basic living skill for humans. However, there are many kids who are used to being fed and taken 22. ________ of everywhere like “the apple of their parents’ eye”. They can’t tell the 23. ________________________ between foods like leeks (韭葱) and shallots (大葱). In order to let the students know the 24. _____________ of hard-working spirit education, the Communist Party of China Central Committee recently released (发布) the guidelines. The guidelines call for students to respect labor (劳动) work. Students should learn basic life skills and develop good working 25. ________ through such education. Students 26. ________ to understand and learn the basics of home cooking from preparing vegetables to 27. ________ being able to finish the whole process of home cooking independently. These will be lifelong skills for kids, helping them develop into well-rounded individuals (个体) not just students who 28. ________ able to take exams. As children’s 29. ________ teachers, parents should also encourage children to learn 30. ________ to do chores at home. Students should learn one or two life skills every year. These skills can be cooking, washing their own clothes and tidying their rooms. It’s really important for students to take labor education 31. ________ at school and at home. Section B (3a-Self Check) 1. 尽管他们失败了, 他们仍然像往常一样努力工作。 Although they failed, they still worked _____________ usual. 2. 他和蜜蜂一样忙碌。 He is _______________ a bee. 3. 我的妈妈和公主一样漂亮。 My mother is ________________ a princess. 4. 他没记住, 我也忘了。 He didn’t remember and ________________. 5. 我的妹妹不喜欢这条连衣裙, 我也不喜欢。 My sister doesn’t like this dress and _______________. 6. 汤姆不会弹钢琴, 我也不会。 Tom can’t play the piano and ____________________. 7. 我们一到就受到了邻居们的欢迎。 Our neighbors welcomed us _____________________. 8. 暑假一开始我就会去看望在英国的阿姨。 I’ll go to visit my aunt in England _______________________. 10. 他刚进屋就开始下起了倾盆大雨。 10. 作为一名警察, 他应该尽自己的职责帮助人民。 As a policeman, he should ______________________ people. 一、任务型阅读 Doing chores not only improves kids’ life skills, but also makes them become more independent. However, many parents may make some mistakes when they ask their kids to do chores. 1 Here’s some useful advice. First, ask kids to do age-appropriate (适龄的) chores. Most kids are smart and learn quickly. 2 If the kids can’t finish a chore in a long time, parents can give them an easier one. Kids can learn a lot even by doing the simplest chores. 3 Kids will not always understand why they need to sweep the floor or make the bed. After parents tell them the reasons, they can understand the importance of doing chores and be happy to help make the home clean and tidy. Third, praise (表扬) kids when they are doing chores. Some chores can be very difficult for kids. 4 However, as long as kids are trying their best, parents should tell them they are doing a great job. 5 Then parents can also teach their kids how to do chores better. A. How can parents do it in the right way? B. That can help kids believe in themselves. C. Second, tell kids why they should do chores. D. But they are not able to do all kinds of chores. E. So it is normal that they can’t do these chores very well. 二、语篇填空 第一节 阅读短文, 从方框中选择适当的词并用其正确形式填空, 使短文通顺、意思完整。每空限填一词, 每词限用一次。 do, she, clean, interest, meaning, tell, have, thing, happy, why It was Friday afternoon. After getting off the school bus, Laura ran into the house 21. ____________. “How was school, Laura?” asked 22. ________ mom. “It was great, Mom. Labor Day is coming. I am excited that I will 23. ________ no school next Monday!” Laura was woken up early on Labor Day morning by her dad. He said that in honor of (纪念) Labor Day, the family planned to 24. ________ some cleaning. Laura couldn’t believe it. She began to wonder if this was just a bad dream. “Laura, your breakfast is ready. We have many 25. ________ to do today. Let’s get a move on,” said Laura’s mom. Laura asked her parents, “Are you serious about working today? Isn’t Labor Day a holiday?” “Yes, Laura, it is,” replied her dad. “But your mom and I thought working hard today would make you realize 26. ________ Labor Day was celebrated in the beginning. ” Laura disliked the plan, but she had no choice (选择). First, she was asked to wash the breakfast dishes. After that, her dad 27. ________ her to give their dog a bath. It was a hard task (任务), which needed a lot of careful work. She began the work unhappily. But things began to change as she was doing the chores. She found it was so 28. ___________ with so many soap bubbles (泡泡) when she brushed the dog. Then it was yard work and she helped to pick up sticks. When she finished her chores, Laura felt happy to see the yard looked much 29. ________ than before. Holidays are not necessarily for fun or rest. Doing something 30. ______________ can also get special pleasure. Maybe this is the spirit of Labor Day. 第二节 阅读短文, 根据语篇要求填空, 使短文通顺、意思完整。每空限填一词。 People have different ideas about paying children for doing chores. Some people think that children should play a part in keeping the house clean 31. ________ tidy. They should do some chores and it is their duty. Parents shouldn’t give money 32. ________ their children for this. Other people, however, believe children should get paid. They say the money they get can help them learn 33. ________ to use it. But for the parents who give money to their children, it can be a headache to decide on how 34. ________ they should give. A good idea is that you can record how much money you give your child every day for two weeks and then decide how much money you should give them according to the average(平均的) daily amount. Children can start getting money 35. ________ the age of 4 or 5, when they start to know how money works. Section A (1a-2d) 一、 1. to 解析：be going to do sth. 表示“打算做某事”。 2. at 解析：at least 表示“至少”。 3. on 解析：work on 表示“从事；忙于”。 4. for 解析：be enough for 表示“对......足够”。 5. the; a 解析：the early train 表示“早班火车”；get a ride 表示“搭便车”。 二、 6. rubbish 解析：collect rubbish 表示“收集垃圾”。 7. sweep 解析：sweep the floor 表示“扫地”。 8. floor 解析：on the floor 表示“在地板上”。 9. mess 解析：in a mess 表示“一团糟”。 10. folded 解析：fold 表示“折叠”，此处用过去式。 三、 11. stay out late 12. finishes doing 13. throw out 14. helps out 四、 15. Sure. What can I do for you? 16. I have a dog. 17. Could you tell me some rules? 18. Yes, you should. 19. Don't worry. Section A (3a-3c) 一、 1. a 解析：take...for a walk 表示“带......去散步”。 2. to 解析：have something to do 表示“有某事要做”。 3. in 解析：in surprise 表示“惊讶地”。 4. as 解析：as soon as 表示“一......就......”。 5. Neither 解析：neither 表示“两者都不”。 二、 6. threw 解析：and 连接两个并列成分，went 是过去式，throw 也要用过去式 threw。 7. shirts 解析：these 修饰复数名词，shirt 的复数是 shirts。 8. angrily 解析：修饰动词 asked 用副词 angrily。 9. does 解析：neither 开头的句子，谓语动词用“就近原则”，my brother 是第三人称单数，且前句是一般现在时，所以用 does。 10. replied 解析：根据语境，用过去式 replied。 三、 11. We need to share the housework to have a clean and comfortable home. 12. I think math is as interesting as physics. 13. Could you please take the dog for a walk? 14. She always leaves the light on all the time. 15. Kunming is neither too hot nor too cold all year round. 四、 21. B 解析：find 表示“发现”，人们发现 18 个月大的孩子就能帮忙做家务。 22. D 解析：they 指代前面提到的 children。 23. B 解析：so 表示“所以”，一些家长认为童年只是用来玩的，所以不让孩子做家务。 24. A 解析：different 表示“不同的”，其他家长有不同的看法。 25. C 解析：quicker 表示“更快”，自己做更快。 26. B 解析：teaching 表示“教”，家务是教孩子责任感的一种方式。 27. D 解析：by doing sth. 通过做某事，做家务。 28. A 解析：examples 表示“例子”，照顾宠物或婴儿以及帮忙做饭是帮助他人的一些例子。 29. C 解析：reasons 表示“原因”，后面介绍了孩子做家务的好处，即原因。 30. D 解析：understand 表示“理解”，做家务帮助孩子理解他们是团队的一部分。 31. A 解析：something 表示“某事”，做对家庭有意义的事。 32. C 解析：how 表示“如何”，学习如何做饭、打扫等。 33. A 解析：life skills 表示“生活技能”。 34. A 解析：it's good for sb. to do sth. 表示“对某人来说做某事是好的”。 35. B 解析：help 表示“帮助”，帮助父母做家务。 Section A (Grammar Focus-4c) 1. Could 2. Could 3. could come 4. could; behave 5. Could; give 6. Could; use 7. Could 8. Could 9. couldn't 10. could 一、 1. borrow 解析：borrow 表示“借入”。 2. lend 解析：lend 表示“借出”。 3. fingers 解析：pianist's fingers 表示“钢琴家的手指”。 4. hating 解析：stop doing sth. 表示“停止做某事”。 5. passes 解析：if 引导的条件状语从句，主句用一般将来时，从句用一般现在时，主语是第三人称单数，pass 用第三人称单数形式 passes。 6. while 解析：while 表示“当......的时候”，引导时间状语从句。 二、 7. Could 8. Could 9. couldn't 10. could Section B (1a-1e) 一、 1. use 解析：could 后接动词原形。 2. snack 解析：此处用名词单数形式。 3. living 解析：living room 表示“客厅”。 4. to invite 解析：plan to do sth. 表示“计划做某事”。 5. to welcome 解析：此处用动词不定式作目的状语。 二、 6. a 解析：a clothes store 表示“一家服装店”。 7. from 解析：borrow...from... 表示“从......借入......”。 8. to 解析：invite...to... 表示“邀请......到......”。 9. so 解析：so 表示“所以”。 10. like 解析：sound like 表示“听起来像”。 三、 11. Neither; nor 12. spends; with 13. using the CD player 14. making the bed 15. taking a test 四、 16. to 解析：have to 表示“不得不”。 17. First 解析：first 表示“首先”。 18. it 解析：指代前面提到的 shirt。 19. out 解析：take out 表示“拿出；带走”。 20. for 解析：cook dinner for sb. 表示“为某人做晚饭”。 Section B (2a-2e) 一、 1. for 解析：provide sth. for sb. 表示“为某人提供某物”。 2. since 解析：since 表示“自从”，引导时间状语从句。 3. of 解析：take care of 表示“照顾”。 4. Moreover 解析：moreover 表示“而且；此外”。 5. a 解析：a waste of time 表示“浪费时间”。 二、 6. stress 解析：stress 是不可数名词。 7. developing 解析：is developing 表示“正在发展”，现在进行时。 8. turning 解析：mind doing sth. 表示“介意做某事”。 9. Independence 解析：Independence Day 表示“独立日”，专有名词。 10. fairness 解析：fair 的名词形式是 fairness。 11. neighbor's 解析：neighbor's 表示“邻居的”，名词所有格。 12. dropped 解析：根据语境，用过去式 dropped。 三、 13. depend on 14. in order to 15. The harder; the luckier 16. As a result 17. fell ill 四、 21. cared 解析：be taken cared of 表示“被照顾”。 22. differences 解析：tell the differences 表示“辨别差异”。 23. importance 解析：the importance of... 表示“......的重要性”。 24. habits 解析：good working habits 表示“良好的工作习惯”。 25. need 解析：need to do sth. 表示“需要做某事”。 26. first 解析：first 表示“首先”。 27. finally 解析：finally 表示“最后”。 28. are 解析：be able to 表示“能够”，主语是复数，用 are。 29. first 解析：first teachers 表示“启蒙老师”。 30. how 解析：how to do sth. 表示“如何做某事”。 31. both 解析：both...and... 表示“......和......都”。 Section B (3a-Self Check) 1. as 解析：as usual 表示“像往常一样”。 2. as busy as 解析：as...as 表示“和......一样”，中间用形容词原级。 3. as beautiful as 解析：as...as 表示“和......一样”，中间用形容词原级。 4. neither did I 解析：neither + 助动词/系动词/情态动词 + 主语，表示“......也不”。 5. neither do I 解析：neither + 助动词/系动词/情态动词 + 主语，表示“......也不”。 6. neither can I 解析：neither + 助动词/系动词/情态动词 + 主语，表示“......也不”。 7. as soon as we arrived 解析：as soon as 表示“一......就......”。 8. as soon as the summer vacation begins 解析：as soon as 表示“一......就......”。 一、 1. A 解析：根据下文“Here’s some useful advice.”可知，此处是问家长如何用正确的方式让孩子做家务，故选 A。 2. D 解析：根据“If the kids can’t finish a chore in a long time, parents can give them an easier one.”可知，孩子不是能做所有的家务，故选 D。 3. C 解析：根据“Kids will not always understand why they need to sweep the floor or make the bed.”可知，此处是说要告诉孩子为什么要做家务，故选 C。 4. E 解析：根据“Some chores can be very difficult for kids.”可知，孩子做不好是正常的，故选 E。 5. B 解析：根据“parents should tell them they are doing a great job.”可知，这样能帮助孩子相信自己，故选 B。 二、 第一节 21. happily 解析：修饰动词 ran 用副词 happily。 22. her 解析：修饰名词 mom 用形容词性物主代词 her。 23. have 解析：will 后接动词原形，have no school 表示“不上学”。 24. do 解析：do some cleaning 表示“打扫卫生”。 25. things 解析：many 修饰可数名词复数，things 表示“事情；东西”。 26. why 解析：realize 后接宾语从句，用 why 引导，表示“为什么”。 27. told 解析：tell sb. to do sth. 表示“告诉某人做某事”，此处用过去式 told。 28. interesting 解析：find it + adj. 表示“发现它......”，interesting 表示“有趣的”。 29. cleaner 解析：than 提示用比较级，clean 的比较级是 cleaner。 30. meaningful 解析：修饰不定代词 something 用形容词 meaningful。 第二节 31. and 解析：keep...clean and tidy 表示“保持......干净整洁”。 32. to 解析：give sth. to sb. 表示“给某人某物”。 33. how 解析：how to use it 表示“如何使用它”。 34. much 解析：how much 表示“多少”，修饰不可数名词 money。 35. at 解析：at the age of 表示“在......岁时”。 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$