Unit 4 Helping out（词汇语法）-2025-2026学年下学期八年级英语单元知识基础巩固（外研版）

2025-2026学年下学期八年级英语单元知识基础巩固(外研版2024) Unit 4 Helping out词汇语法 目录 第一部分 单元词汇背默锁定基础 高效学习 第二部分 词汇强化训练深度优化 扫清盲区 第二部分 核心语法训练用法精析 变式巩固 ◇Part 01 单元词汇清单 Unit 4 单元词汇背诵清单 ( 1 / 2 )学科网（北京）股份有限公司 学科网（北京）股份有限公司 excuse me劳驾(用于礼貌地引起他人注意，尤其是发问时) purple adj.紫色的 crayon n.彩色蜡笔 five-year-old adj.五岁的 sunshine n.阳光 virus n.病毒 afford v.买得起，付得起 disappointment n.失望，扫兴，沮丧 X-ray n.X光检查 treatment n.治疗，诊治；疗法 pocket n.衣袋，口袋 pocket money零花钱 illness n.病，疾病 wheelchair n.轮椅 public adj.公众的，大众的 go public公开，公之于众 mention v.提到，说起，谈到 directly adv.直接地 solution n.解决，解决方法 bottle n.瓶子 a bottle of一瓶 exam n.考试 dialogue n.对话，对白 flu n.流行性感冒，流感 homeless adj.无家可归的 soldier n.士兵，军人 fireman n.消防队员 against prep.反对 graduate v.大学毕业 college n.大学；学院 goodwill n.好意，亲善，友善 warmth n.温暖 means n.手段；方法；工具 by no means绝不，一点儿都不 lucky adj.运气好的，幸运的 Unit 4 单元词汇默写清单 ____________劳驾(用于礼貌地引起他人注意，尤其是发问时) ____________ adj.紫色的 ____________n.彩色蜡笔 ____________ adj.五岁的 ____________ n.阳光 ____________n.病毒 ____________v.买得起，付得起 ____________n.失望，扫兴，沮丧 ____________ n.X光检查 ____________n.治疗，诊治；疗法 ____________n.衣袋，口袋 ____________零花钱 ____________ n.病，疾病 ____________n.轮椅 ____________adj.公众的，大众的 ____________公开，公之于众 ____________ v.提到，说起，谈到 ____________ adv.直接地 ____________n.解决，解决方法 ____________n.瓶子 ____________一瓶 ____________n.考试 ____________n.对话，对白 ____________n.流行性感冒，流感 ____________ adj.无家可归的 ____________n.士兵，军人 ____________ n.消防队员 ____________prep.反对 ____________v.大学毕业 ____________ n.大学；学院 ____________ n.好意，亲善，友善 ____________ n.温暖 ____________n.手段；方法；工具 ____________绝不，一点儿都不 ____________ adj.运气好的，幸运的 ◇Part 02 词汇强化训练 一、单项选择 1. —______, could you tell me how to get to the library? —Sure. Go along this street and turn left. A. Sorry B. Excuse me C. Thank you D. Goodbye 2. My favorite color is ______, so I bought a ______ schoolbag yesterday. A. purple; purple B. pink; pink C. blue; blue D. red; red 3. Little Tom uses a ______ to draw colorful pictures in art class. A. pen B. pencil C. crayon D. ruler 4. The ______ girl can sing many English songs very well. A. five years old B. five-year-old C. five year old D. five-years-old 5. The ______ makes the room bright and warm on sunny days. A. wind B. cloud C. sunshine D. rain 6. People should wash hands often to keep away from the ______. A. food B. virus C. water D. book 7. The car is too expensive. I can’t ______ it. A. afford B. spend C. cost D. pay 8. To our ______, we didn’t win the game in the end. A. disappointment B. happiness C. excitement D. surprise 9. The doctor asked me to take an ______ to check my body. A. X-ray B. photo C. message D. letter 10. The ______ for his headache will last about two weeks. A. task B. treatment C. job D. plan 11. There is some money in my ______. I can buy a drink for you. A. desk B. bag C. pocket D. box 12. Children usually get ______ from their parents every week. A. pocket money B. book money C. food money D. bag money 13. The poor boy has a serious ______ and needs to stay in hospital. A. illness B. lesson C. sport D. game 14. The old man can’t walk, so he has to sit in a ______. A. chair B. wheelchair C. sofa D. bed 15. We should protect the ______ environment and make our city better. A. private B. public C. personal D. own 16. The famous singer decided to ______ about her life story to the world. A. go public B. go home C. go out D. go away 17. Don’t forget to ______ your trip to Beijing when you write the diary. A. speak B. talk C. mention D. tell 18. You can ______ ask the teacher for help if you don’t understand the question. A. slowly B. quickly C. directly D. carefully 19. We need to find a good ______ to solve the difficult problem. A. question B. solution C. problem D. reason 20. I want to buy ______ orange juice for the picnic. A. a bottle B. a bottle of C. a lot D. a few 21. I will study hard because the final ______ is coming soon. A. exam B. class C. lesson D. meeting 22. The actors in the movie have very natural and beautiful ______. A. dialogue B. song C. dance D. picture 23. Many students have got the ______ and can’t go to school these days. A. cold B. flu C. headache D. toothache 24. We should try our best to help the ______ people on the street. A. rich B. homeless C. healthy D. clever 25. The ______ fought bravely to protect our country in the war. A. doctor B. teacher C. soldier D. farmer 26. The ______ put out the big fire quickly and saved many people. A. fireman B. nurse C. driver D. writer 27. Most people are ______ building a new factory here because of pollution. A. for B. with C. against D. at 28. He will ______ from college next year and find a good job. A. leave B. graduate C. start D. finish 29. There is a famous ______ in the center of our city. A. hospital B. college C. farm D. shop 30. We can feel the ______ from his kind words and helpful hands. A. goodwill B. badness C. sadness D. illness 31. We can feel the ______ of the sun in winter. A. cold B. warmth C. cool D. wind 32. We should use proper ______ to learn English well. A. ways B. means C. methods D. ideas 33. —Are you satisfied with the result? —______. It’s much worse than I thought. A. By all means B. By no means C. Of course D. Yes 34. You are so ______ to win the first prize in the competition. A. unlucky B. lucky C. sad D. angry 35. —What’s in your ______? —A key and some pocket money. A. pocket B. bag C. desk D. box 36. The ______ of the problem is easy to find if you think carefully. A. question B. solution C. problem D. reason 37. She ______ her happy childhood when we talked about old days. A. spoke B. mentioned C. talked D. said 38. The ______ from his friends helps him go through the hard time. A. goodwill B. illness C. disappointment D. virus 39. It’s not polite to look at others ______ when you talk to them. A. directly B. slowly C. quickly D. carefully 40. We should give food and clothes to the ______ people in need. A. rich B. homeless C. healthy D. clever 二、用所给单词的适当形式填空 1. The little girl is ________ (five-year-old). She can draw with ________ (crayon). 2. ________ (sunshine) makes the room bright and warm. 3. We should keep away from ________ (virus) to keep healthy. 4. The car is too expensive. I can’t ________ (afford) it. 5. To my ________ (disappoint), he didn’t come to my party. 6. You need to take an ________ (X-ray) to check your leg. 7. The doctor is giving ________ (treat) to the sick man. 8. There is some money in his ________ (pocket). 9. Children should learn to manage their ________ (pocket money). 10. Many people die of ________ (illness) every year. 11. The old man can’t walk, so he uses a ________ (wheelchair). 12. It’s polite to help ________ (public) people in need. 13. The star didn’t want to ________ (go public) with his story. 14. Don’t ________ (mention) it. It’s my pleasure. 15. You can speak ________ (direct) if you have any question. 16. We need to find a good ________ (solution) to the problem. 17. He drinks ________ (a bottle of) milk every morning. 18. I will have an English ________ (exam) next week. 19. They are having a ________ (dialogue) about their plans. 20. Many students have ________ (flu) these days. 21. We should help ________ (homeless) people. 22. The ________ (soldier) saved many people in the fire. 23. The ________ (fireman) are very brave. 24. I’m ________ (against) your plan. It’s not safe. 25. He will ________ (graduate) from college next year. 三、根据汉语提示完成英语句子 1. 劳驾，你能告诉我去公园的路吗？ ________ ________, can you tell me the way to the park? 2. 她最喜欢的颜色是紫色。 Her favorite color is ________. 3. 他绝不迟到。 He is ________ ________ ________ late. 4. 我们应该用友善温暖他人。 We should use ________ to bring ________ to others. 5. 电话是一种有用的交流工具。 Telephone is a useful ________ of communication. 6. 幸运的是，我通过了考试。 ________, I passed the ________. 7. 他大学毕业后想当一名医生。 He wants to be a doctor after he ________ from ________. 8. 我们需要一瓶水。 We need ________ ________ ________ water. 9. 你不应该直接拒绝他。 You shouldn’t refuse him ________. 10. 谢谢你提到我的建议。 Thank you for ________ my ________. 11. 他不想把这件事公之于众。 He doesn’t want to ________ ________ about it. 12. 公众应该遵守规则。 The ________ should follow the rules. 13. 这个病人正在接受治疗。 The sick man is getting ________. 14. 令我失望的是，他输了比赛。 To my ________, he lost the game. 15. 我们买不起这个新电脑。 We can’t ________ the new computer. 16. 阳光对植物有益。 ________ is good for plants. 17. 这个五岁的男孩会画画。 The ________ ________ boy can draw pictures. 18. 我们应该帮助无家可归的人。 We should help ________ ________. 19. 消防队员们扑灭了大火。 The ________ put out the big fire. 20. 士兵们保卫着我们的国家。 The ________ protect our country. ◇Part 03 核心语法训练 一、单项选择 1．—Millie, have you decided what to do during the weekend?   —Not yet. I ________ work as a volunteer for the elderly. A．need B．must C．may D．should 2．We ________ take action to protect our earth, or our living environment will get worse. A．can B．may C．must D．could 3．—I have a stomachache. —You ________ eat so much ice cream. A．shouldn’t B．should C．could D．would 4．—________ you come to my party tomorrow? —Sorry, I have to study. A．Must B．Should C．Could D．Would 5．According to the school rules, the students ________ wear school uniforms on Open Day. A．can B．may C．need D．must 6．—I have a really bad toothache. —You ________ see the dentist and get an X-ray. A．should B．could C．may D．would 7．All guests have received the e-invitation, so we ________ send paper cards. A．should B．can C．mustn’t D．needn’t 8．Books in the library are for everyone. You ________ write in the books or take out any pages. A．may B．need not C．must not D．would not 9．—Look at the sign here! You ________ take photos.     —Sorry. I won’t. A．won’t B．needn’t C．mustn’t D．may not 10．—Must I hand in my science report before the first class? —No, you ________. You can give it to me after lunch. A．mustn’t B．can’t C．shouldn’t D．don’t have to 11．David ________ stay up late if he doesn’t manage his time well. A．may B．can’t C．should D．mustn’t 12．—Look at the sign on the coat. What does it mean? —It says this coat ________ be washed by hand. A．can B．must C．can’t D．mustn’t 13．When young people learn more, they ________ deal with all kinds of problems. A．cannot B．may C．can D．could 14．— ________I watch TV now, mom? — No, It’s too late. You ________go to bed now. A．Can; must B．Can; mustn’t C．Can; can’t D．Must; can 15．—________ I borrow your dictionary? —Sure. Here you are. A．Should B．Must C．Need D．Can 16．—Must I finish the homework right now? —No, you ________. You ________ finish it before tomorrow evening. A．mustn’t; can B．needn’t; may C．can’t; need D．may not; must 17．—Where are you going this summer holiday? —I’m not sure. I ________ go to a cooler place in the northeast. A．should B．must C．need D．might 18．—Susan, would you like to go shopping with us this afternoon? —I’d love to, but I ________ do my homework first. A．may B．have to C．can D．has to 19．You ________ buy anything. Just come to my party tomorrow. I’ve got everything ready. A．can’t B．mustn’t C．needn’t D．wouldn’t 20．You ________ see the dentist if you have a really bad toothache. A．would B．couldn’t C．should D．shouldn’t 21．You ________ talk loudly in the library. A．need B．must C．needn’t D．mustn’t 22．—________ I use your dictionary? I can’t find mine. —Sorry, I ________. I’m using it now. A．Must; should B．May; must C．Can; can’t D．Should; may 23．—You ________ play with fire in the forest. It may cause a big fire and bring great danger. A．needn’t B．mustn’t C．shouldn’t D．may not 24．Mum says we ________ go outdoors during a storm. It’s dangerous. A．can B．should C．must D．mustn’t 25．Everyone ________ follow all kinds of rules in life. No rules, no order. A．can’t B．mustn’t C．can D．must 26．—________ I go out to play after I finish my homework? —Yes, you ________, but you ________ come back before 7 o’clock. A．May; may; must B．May; can; must C．Must; can; can’t D．Need; may; should 27．We _________ run in the hallway. It’s one of our school rules. A．mustn’t B．have to C．can D．may 28．—Must we practise the piano every morning? —No, we ________ A．can’t B．mustn’t C．don’t have to D．must 29．—Must we finish our homework now? —________. You can leave now. A．Yes, you must B．Yes, you need C．No, you mustn’t D．No, you needn’t 30．—This task looks difficult. —Don’t worry, Jim. With teamwork, you ________ finish it on time. A．must B．can C．need D．might 二、完成句子 31．我们应该筹集资金帮助有需要的人。 We should ________ ________ to help people in need. 32．我们的许多病人负担不起去医院的费用。 Many of our patients ________ ________ ________ go to hospital. 33．我们的许多病人负担不起去医院的费用，所以我们必须去他们那里。 Many of our patients ________ ________ ________ go to hospital, so we have to go to them. 34．小小的善意也能带来巨大的改变。 Small acts of kindness can ________ ________ __________ __________. 35．我们总能从助人者身上学到东西。 We can always ________ ________ those who help others. 36．如果你下午没事，可以跟我们一起去参观市博物馆。 If you have nothing to do this afternoon, you can ________ ________ with us to visit the city museum. 37．我们应该采取行动保护环境，保护我们的地球。 We should ________ ________ to protect the environment and our planet. 38．水在冬天会变成冰。 Water can ________ ________ ice in winter. 39．我们舍不得把眼睛从屏幕上移开，直到最后灯光重新亮起来。 We couldn’t ________ our ________ ________ the screen until the lights came back on ________ ________. 40．房子很大，所以我的祖父母可以和我们住在一起而且我们可以照顾好他们。 The house is big, so my grandparents can ________ ________ us and we can ________ ________ ________ ________ them. 41．因此，我们应理性地使用人工智能。 Therefore, AI should _________ _________ wisely. 42．玩游戏时，我们应该遵守规则。 When we play games, we should ________ ________ ________. 43．这可以增加野生动物的数量。 It can ________ ________ ________ ________ wild animals. 44．野生动物的消失可能自然发生。 Loss of wildlife can ________ ________. 45．的确，没有植物我们无法生存。 Indeed, we ________ ________ ________ ________. 46．动物和人类有一种特殊的关系，我们应该尊重和关爱它们。 Animals and humans have ________ ________ ________, and we should respect and ________ ________ them. 47．——我可以喂你的金鱼吗？   ——对不起，恐怕你不能。 — ________ I ________ your goldfish?    — Sorry, I’m afraid you can’t. 48．我无法想象没有宠物的生活。它们对我意义重大。 I ________ ________ my life ________ my pets. They ________ a lot to me. 49．如果我们不能解决一个数学难题，他就会鼓励我们以一种新的方式来思考它。 _______ we cannot _______ _______ a difficult maths problem, he will encourage us to _______ _______ it _______ _______ _______ _______. 50．简单的选择就能产生巨大的影响。 Simple choices can ________ ________ _________ ________. $2025-2026学年下学期八年级英语单元知识基础巩固(外研版2024) Unit 4 Helping out词汇语法 目录 第一部分 单元词汇背默锁定基础 高效学习 第二部分 词汇强化训练深度优化 扫清盲区 第二部分 核心语法训练用法精析 变式巩固 ◇Part 01 单元词汇清单 Unit 4 单元词汇背诵清单 ( 1 / 2 )学科网（北京）股份有限公司 学科网（北京）股份有限公司 excuse me劳驾(用于礼貌地引起他人注意，尤其是发问时) purple adj.紫色的 crayon n.彩色蜡笔 five-year-old adj.五岁的 sunshine n.阳光 virus n.病毒 afford v.买得起，付得起 disappointment n.失望，扫兴，沮丧 X-ray n.X光检查 treatment n.治疗，诊治；疗法 pocket n.衣袋，口袋 pocket money零花钱 illness n.病，疾病 wheelchair n.轮椅 public adj.公众的，大众的 go public公开，公之于众 mention v.提到，说起，谈到 directly adv.直接地 solution n.解决，解决方法 bottle n.瓶子 a bottle of一瓶 exam n.考试 dialogue n.对话，对白 flu n.流行性感冒，流感 homeless adj.无家可归的 soldier n.士兵，军人 fireman n.消防队员 against prep.反对 graduate v.大学毕业 college n.大学；学院 goodwill n.好意，亲善，友善 warmth n.温暖 means n.手段；方法；工具 by no means绝不，一点儿都不 lucky adj.运气好的，幸运的 Unit 4 单元词汇默写清单 ____________劳驾(用于礼貌地引起他人注意，尤其是发问时) ____________ adj.紫色的 ____________n.彩色蜡笔 ____________ adj.五岁的 ____________ n.阳光 ____________n.病毒 ____________v.买得起，付得起 ____________n.失望，扫兴，沮丧 ____________ n.X光检查 ____________n.治疗，诊治；疗法 ____________n.衣袋，口袋 ____________零花钱 ____________ n.病，疾病 ____________n.轮椅 ____________adj.公众的，大众的 ____________公开，公之于众 ____________ v.提到，说起，谈到 ____________ adv.直接地 ____________n.解决，解决方法 ____________n.瓶子 ____________一瓶 ____________n.考试 ____________n.对话，对白 ____________n.流行性感冒，流感 ____________ adj.无家可归的 ____________n.士兵，军人 ____________ n.消防队员 ____________prep.反对 ____________v.大学毕业 ____________ n.大学；学院 ____________ n.好意，亲善，友善 ____________ n.温暖 ____________n.手段；方法；工具 ____________绝不，一点儿都不 ____________ adj.运气好的，幸运的 ◇Part 02 词汇强化训练 一、单项选择 1. —______, could you tell me how to get to the library? —Sure. Go along this street and turn left. A. Sorry B. Excuse me C. Thank you D. Goodbye 2. My favorite color is ______, so I bought a ______ schoolbag yesterday. A. purple; purple B. pink; pink C. blue; blue D. red; red 3. Little Tom uses a ______ to draw colorful pictures in art class. A. pen B. pencil C. crayon D. ruler 4. The ______ girl can sing many English songs very well. A. five years old B. five-year-old C. five year old D. five-years-old 5. The ______ makes the room bright and warm on sunny days. A. wind B. cloud C. sunshine D. rain 6. People should wash hands often to keep away from the ______. A. food B. virus C. water D. book 7. The car is too expensive. I can’t ______ it. A. afford B. spend C. cost D. pay 8. To our ______, we didn’t win the game in the end. A. disappointment B. happiness C. excitement D. surprise 9. The doctor asked me to take an ______ to check my body. A. X-ray B. photo C. message D. letter 10. The ______ for his headache will last about two weeks. A. task B. treatment C. job D. plan 11. There is some money in my ______. I can buy a drink for you. A. desk B. bag C. pocket D. box 12. Children usually get ______ from their parents every week. A. pocket money B. book money C. food money D. bag money 13. The poor boy has a serious ______ and needs to stay in hospital. A. illness B. lesson C. sport D. game 14. The old man can’t walk, so he has to sit in a ______. A. chair B. wheelchair C. sofa D. bed 15. We should protect the ______ environment and make our city better. A. private B. public C. personal D. own 16. The famous singer decided to ______ about her life story to the world. A. go public B. go home C. go out D. go away 17. Don’t forget to ______ your trip to Beijing when you write the diary. A. speak B. talk C. mention D. tell 18. You can ______ ask the teacher for help if you don’t understand the question. A. slowly B. quickly C. directly D. carefully 19. We need to find a good ______ to solve the difficult problem. A. question B. solution C. problem D. reason 20. I want to buy ______ orange juice for the picnic. A. a bottle B. a bottle of C. a lot D. a few 21. I will study hard because the final ______ is coming soon. A. exam B. class C. lesson D. meeting 22. The actors in the movie have very natural and beautiful ______. A. dialogue B. song C. dance D. picture 23. Many students have got the ______ and can’t go to school these days. A. cold B. flu C. headache D. toothache 24. We should try our best to help the ______ people on the street. A. rich B. homeless C. healthy D. clever 25. The ______ fought bravely to protect our country in the war. A. doctor B. teacher C. soldier D. farmer 26. The ______ put out the big fire quickly and saved many people. A. fireman B. nurse C. driver D. writer 27. Most people are ______ building a new factory here because of pollution. A. for B. with C. against D. at 28. He will ______ from college next year and find a good job. A. leave B. graduate C. start D. finish 29. There is a famous ______ in the center of our city. A. hospital B. college C. farm D. shop 30. We can feel the ______ from his kind words and helpful hands. A. goodwill B. badness C. sadness D. illness 31. We can feel the ______ of the sun in winter. A. cold B. warmth C. cool D. wind 32. We should use proper ______ to learn English well. A. ways B. means C. methods D. ideas 33. —Are you satisfied with the result? —______. It’s much worse than I thought. A. By all means B. By no means C. Of course D. Yes 34. You are so ______ to win the first prize in the competition. A. unlucky B. lucky C. sad D. angry 35. —What’s in your ______? —A key and some pocket money. A. pocket B. bag C. desk D. box 36. The ______ of the problem is easy to find if you think carefully. A. question B. solution C. problem D. reason 37. She ______ her happy childhood when we talked about old days. A. spoke B. mentioned C. talked D. said 38. The ______ from his friends helps him go through the hard time. A. goodwill B. illness C. disappointment D. virus 39. It’s not polite to look at others ______ when you talk to them. A. directly B. slowly C. quickly D. carefully 40. We should give food and clothes to the ______ people in need. A. rich B. homeless C. healthy D. clever 答案 1.B 2.A 3.C 4.B 5.C 6.B 7.A 8.A 9.A 10.B 11.C 12.A 13.A 14.B 15.B 16.A 17.C 18.C 19.B 20.B 21.A 22.A 23.B 24.B 25.C 26.A 27.C 28.B 29.B 30.A 31.B 32.B 33.B 34.B 35.A 36.B 37.B 38.A 39.A 40.B 解析 1. 考查短语excuse me，用于礼貌引起他人注意、发问，符合问路语境，故选B。 2. 考查词汇purple，形容词“紫色的”，两处均用purple符合句意，故选A。 3. 考查词汇crayon，名词“彩色蜡笔”，用于画画符合语境，故选C。 4. 考查复合形容词five-year-old，用于修饰名词，结构为“数词-名词单数-形容词”，故选B。 5. 考查词汇sunshine，名词“阳光”，能让房间明亮温暖，故选C。 6. 考查词汇virus，名词“病毒”，勤洗手远离病毒符合常识，故选B。 7. 考查词汇afford，动词“买得起，付得起”，常与can/can’t连用，故选A。 8. 考查词汇disappointment，名词“失望”，to one’s disappointment表示“令某人失望的是”，故选A。 9. 考查词汇X-ray，名词“X光检查”，是医生检查身体的方式，故选A。 10. 考查词汇treatment，名词“治疗，诊治”，针对头痛的治疗符合句意，故选B。 11. 考查词汇pocket，名词“衣袋，口袋”，钱放在口袋里符合常识，故选C。 12. 考查短语pocket money，固定搭配“零花钱”，故选A。 13. 考查词汇illness，名词“病，疾病”，serious illness表示“严重的疾病”，故选A。 14. 考查词汇wheelchair，名词“轮椅”，不能走路的人坐轮椅，故选B。 15. 考查词汇public，形容词“公众的，大众的”，public environment表示“公共环境”，故选B。 16. 考查短语go public，固定搭配“公开，公之于众”，符合歌手公开故事的语境，故选A。 17. 考查词汇mention，动词“提到，说起”，写日记提到旅行符合句意，故选C。 18. 考查词汇directly，副词“直接地”，直接向老师求助符合语境，故选C。 19. 考查词汇solution，名词“解决方法”，a solution to the problem表示“问题的解决方法”，故选B。 20. 考查短语a bottle of，固定搭配“一瓶”，修饰不可数名词juice，故选B。 21. 考查词汇exam，名词“考试”，final exam表示“期末考试”，故选A。 22. 考查词汇dialogue，名词“对话，对白”，电影演员的对话符合语境，故选A。 23. 考查词汇flu，名词“流感”，学生得流感不能上学符合常识，故选B。 24. 考查词汇homeless，形容词“无家可归的”，帮助无家可归的人符合句意，故选B。 25. 考查词汇soldier，名词“士兵，军人”，军人保卫国家，故选C。 26. 考查词汇fireman，名词“消防队员”，消防员灭火救人，故选A。 27. 考查词汇against，介词“反对”，be against doing表示“反对做某事”，故选C。 28. 考查词汇graduate，动词“大学毕业”，graduate from college表示“大学毕业”，故选B。 29. 考查词汇college，名词“大学；学院”，a famous college表示“一所著名的大学”，故选B。 30. 考查词汇goodwill，名词“好意，友善”，善意的话语和帮助符合语境，故选A。 31. 考查词汇warmth，名词“温暖”，太阳的温暖符合句意，故选B。 32. 考查词汇means，名词“手段；方法”，use proper means表示“使用恰当的方法”，故选B。 33. 考查短语by no means，固定搭配“绝不，一点儿都不”，符合对结果不满意的语境，故选B。 34. 考查词汇lucky，形容词“幸运的”，赢得一等奖是幸运的，故选B。 35. 考查词汇pocket，名词“衣袋，口袋”，钥匙和零花钱在口袋里，故选A。 36. 考查词汇solution，名词“解决方法”，find the solution表示“找到解决方法”，故选B。 37. 考查词汇mentioned，动词“提到”，提及童年往事符合语境，故选B。 38. 考查词汇goodwill，名词“好意，友善”，朋友的善意帮助度过难关，故选A。 39. 考查词汇directly，副词“直接地”，直视他人不礼貌，故选A。 40. 考查词汇homeless，形容词“无家可归的”，帮助无家可归的困难人群，故选B。 二、用所给单词的适当形式填空 1. The little girl is ________ (five-year-old). She can draw with ________ (crayon). 2. ________ (sunshine) makes the room bright and warm. 3. We should keep away from ________ (virus) to keep healthy. 4. The car is too expensive. I can’t ________ (afford) it. 5. To my ________ (disappoint), he didn’t come to my party. 6. You need to take an ________ (X-ray) to check your leg. 7. The doctor is giving ________ (treat) to the sick man. 8. There is some money in his ________ (pocket). 9. Children should learn to manage their ________ (pocket money). 10. Many people die of ________ (illness) every year. 11. The old man can’t walk, so he uses a ________ (wheelchair). 12. It’s polite to help ________ (public) people in need. 13. The star didn’t want to ________ (go public) with his story. 14. Don’t ________ (mention) it. It’s my pleasure. 15. You can speak ________ (direct) if you have any question. 16. We need to find a good ________ (solution) to the problem. 17. He drinks ________ (a bottle of) milk every morning. 18. I will have an English ________ (exam) next week. 19. They are having a ________ (dialogue) about their plans. 20. Many students have ________ (flu) these days. 21. We should help ________ (homeless) people. 22. The ________ (soldier) saved many people in the fire. 23. The ________ (fireman) are very brave. 24. I’m ________ (against) your plan. It’s not safe. 25. He will ________ (graduate) from college next year. 三、根据汉语提示完成英语句子 1. 劳驾，你能告诉我去公园的路吗？ ________ ________, can you tell me the way to the park? 2. 她最喜欢的颜色是紫色。 Her favorite color is ________. 3. 他绝不迟到。 He is ________ ________ ________ late. 4. 我们应该用友善温暖他人。 We should use ________ to bring ________ to others. 5. 电话是一种有用的交流工具。 Telephone is a useful ________ of communication. 6. 幸运的是，我通过了考试。 ________, I passed the ________. 7. 他大学毕业后想当一名医生。 He wants to be a doctor after he ________ from ________. 8. 我们需要一瓶水。 We need ________ ________ ________ water. 9. 你不应该直接拒绝他。 You shouldn’t refuse him ________. 10. 谢谢你提到我的建议。 Thank you for ________ my ________. 11. 他不想把这件事公之于众。 He doesn’t want to ________ ________ about it. 12. 公众应该遵守规则。 The ________ should follow the rules. 13. 这个病人正在接受治疗。 The sick man is getting ________. 14. 令我失望的是，他输了比赛。 To my ________, he lost the game. 15. 我们买不起这个新电脑。 We can’t ________ the new computer. 16. 阳光对植物有益。 ________ is good for plants. 17. 这个五岁的男孩会画画。 The ________ ________ boy can draw pictures. 18. 我们应该帮助无家可归的人。 We should help ________ ________. 19. 消防队员们扑灭了大火。 The ________ put out the big fire. 20. 士兵们保卫着我们的国家。 The ________ protect our country. 答案与解析 二、 答案 1. five-year-old; crayons 2. Sunshine 3. viruses 4. afford 5. disappointment 6. X-ray 7. treatment 8. pocket 9. pocket money 10. illnesses 11. wheelchair 12. public 13. go public 14. mention 15. directly 16. solution 17. a bottle of 18. exam 19. dialogue 20. flu 21. homeless 22. soldier 23. firemen 24. against 25. graduate 解析 1. 第一空five-year-old为复合形容词，无形式变化；第二空crayon表泛指用复数crayons。 2. sunshine为不可数名词，句首首字母大写，填Sunshine。 3. virus为可数名词，表泛指用复数viruses。 4. afford跟在情态动词can’t后，用原形afford。 5. to one’s disappointment为固定搭配，意为“令某人失望的是”，填disappointment。 6. X-ray以元音音素开头，前用an，用单数X-ray。 7. treatment表示“治疗”时为不可数名词，填treatment。 8. pocket此处用单数，表“他的口袋”，填pocket。 9. pocket money为固定短语，意为“零花钱”，无形式变化，填pocket money。 10. illness表示“多种疾病”时用复数illnesses。 11. wheelchair前有a，用单数wheelchair。 12. public为形容词，修饰people，填public。 13. want to do sth.结构，go public用原形，填go public。 14. don’t后接动词原形，填mention。 15. 修饰动词speak用副词directly。 16. a后接可数名词单数，填solution。 17. a bottle of为固定搭配，意为“一瓶”，无形式变化，填a bottle of。 18. an后接可数名词单数，填exam。 19. a后接可数名词单数，填dialogue。 20. flu为不可数名词，填flu。 21. homeless为形容词，修饰people，填homeless。 22. soldier此处用单数，表“这位士兵”，填soldier。 23. be动词are提示主语用复数，fireman复数为firemen。 24. against为介词，无形式变化，填against。 25. will后接动词原形，填graduate。 三、 答案 1. Excuse me 2. purple 3. by no means 4. goodwill; warmth 5. means 6. Luckily; exam 7. graduates; college 8. a bottle of 9. directly 10. mentioning; suggestion 11. go public 12. public 13. treatment 14. disappointment 15. afford 16. Sunshine 17. five-year-old 18. homeless people 19. firemen 20. soldiers 解析 1. Excuse me为固定短语，意为“劳驾”，句首首字母大写。 2. purple为形容词，意为“紫色的”，直接填purple。 3. by no means为固定短语，意为“绝不”。 4. 第一空goodwill为名词，意为“友善”；第二空warmth为名词，意为“温暖”。 5. a means of为固定搭配，意为“一种……的方法/工具”，填means。 6. 第一空修饰整个句子用副词Luckily；第二空exam意为“考试”，填exam。 7. 主语he为第三人称单数，一般现在时动词用graduates；college意为“大学”，填college。 8. a bottle of为固定短语，意为“一瓶”。 9. 修饰动词refuse用副词directly，意为“直接地”。 10. thank you for doing sth.结构，填mentioning；第二空suggestion意为“建议”。 11. want to do sth.结构，go public用原形，意为“公之于众”。 12. the public为固定短语，意为“公众”。 13. get treatment为固定搭配，意为“接受治疗”，填treatment。 14. to one’s disappointment为固定短语，意为“令某人失望的是”，填disappointment。 15. can’t后接动词原形afford，意为“买得起”。 16. sunshine为不可数名词，句首首字母大写，填Sunshine。 17. five-year-old为复合形容词，修饰名词boy，无形式变化。 18. homeless people为固定表达，意为“无家可归的人”。 19. fireman复数为firemen，表泛指。 20. soldier复数为soldiers，表泛指。 ◇Part 03 核心语法训练 一、单项选择 1．—Millie, have you decided what to do during the weekend?   —Not yet. I ________ work as a volunteer for the elderly. A．need B．must C．may D．should 2．We ________ take action to protect our earth, or our living environment will get worse. A．can B．may C．must D．could 3．—I have a stomachache. —You ________ eat so much ice cream. A．shouldn’t B．should C．could D．would 4．—________ you come to my party tomorrow? —Sorry, I have to study. A．Must B．Should C．Could D．Would 5．According to the school rules, the students ________ wear school uniforms on Open Day. A．can B．may C．need D．must 6．—I have a really bad toothache. —You ________ see the dentist and get an X-ray. A．should B．could C．may D．would 7．All guests have received the e-invitation, so we ________ send paper cards. A．should B．can C．mustn’t D．needn’t 8．Books in the library are for everyone. You ________ write in the books or take out any pages. A．may B．need not C．must not D．would not 9．—Look at the sign here! You ________ take photos.     —Sorry. I won’t. A．won’t B．needn’t C．mustn’t D．may not 10．—Must I hand in my science report before the first class? —No, you ________. You can give it to me after lunch. A．mustn’t B．can’t C．shouldn’t D．don’t have to 11．David ________ stay up late if he doesn’t manage his time well. A．may B．can’t C．should D．mustn’t 12．—Look at the sign on the coat. What does it mean? —It says this coat ________ be washed by hand. A．can B．must C．can’t D．mustn’t 13．When young people learn more, they ________ deal with all kinds of problems. A．cannot B．may C．can D．could 14．— ________I watch TV now, mom? — No, It’s too late. You ________go to bed now. A．Can; must B．Can; mustn’t C．Can; can’t D．Must; can 15．—________ I borrow your dictionary? —Sure. Here you are. A．Should B．Must C．Need D．Can 16．—Must I finish the homework right now? —No, you ________. You ________ finish it before tomorrow evening. A．mustn’t; can B．needn’t; may C．can’t; need D．may not; must 17．—Where are you going this summer holiday? —I’m not sure. I ________ go to a cooler place in the northeast. A．should B．must C．need D．might 18．—Susan, would you like to go shopping with us this afternoon? —I’d love to, but I ________ do my homework first. A．may B．have to C．can D．has to 19．You ________ buy anything. Just come to my party tomorrow. I’ve got everything ready. A．can’t B．mustn’t C．needn’t D．wouldn’t 20．You ________ see the dentist if you have a really bad toothache. A．would B．couldn’t C．should D．shouldn’t 21．You ________ talk loudly in the library. A．need B．must C．needn’t D．mustn’t 22．—________ I use your dictionary? I can’t find mine. —Sorry, I ________. I’m using it now. A．Must; should B．May; must C．Can; can’t D．Should; may 23．—You ________ play with fire in the forest. It may cause a big fire and bring great danger. A．needn’t B．mustn’t C．shouldn’t D．may not 24．Mum says we ________ go outdoors during a storm. It’s dangerous. A．can B．should C．must D．mustn’t 25．Everyone ________ follow all kinds of rules in life. No rules, no order. A．can’t B．mustn’t C．can D．must 26．—________ I go out to play after I finish my homework? —Yes, you ________, but you ________ come back before 7 o’clock. A．May; may; must B．May; can; must C．Must; can; can’t D．Need; may; should 27．We _________ run in the hallway. It’s one of our school rules. A．mustn’t B．have to C．can D．may 28．—Must we practise the piano every morning? —No, we ________ A．can’t B．mustn’t C．don’t have to D．must 29．—Must we finish our homework now? —________. You can leave now. A．Yes, you must B．Yes, you need C．No, you mustn’t D．No, you needn’t 30．—This task looks difficult. —Don’t worry, Jim. With teamwork, you ________ finish it on time. A．must B．can C．need D．might 二、完成句子 31．我们应该筹集资金帮助有需要的人。 We should ________ ________ to help people in need. 32．我们的许多病人负担不起去医院的费用。 Many of our patients ________ ________ ________ go to hospital. 33．我们的许多病人负担不起去医院的费用，所以我们必须去他们那里。 Many of our patients ________ ________ ________ go to hospital, so we have to go to them. 34．小小的善意也能带来巨大的改变。 Small acts of kindness can ________ ________ __________ __________. 35．我们总能从助人者身上学到东西。 We can always ________ ________ those who help others. 36．如果你下午没事，可以跟我们一起去参观市博物馆。 If you have nothing to do this afternoon, you can ________ ________ with us to visit the city museum. 37．我们应该采取行动保护环境，保护我们的地球。 We should ________ ________ to protect the environment and our planet. 38．水在冬天会变成冰。 Water can ________ ________ ice in winter. 39．我们舍不得把眼睛从屏幕上移开，直到最后灯光重新亮起来。 We couldn’t ________ our ________ ________ the screen until the lights came back on ________ ________. 40．房子很大，所以我的祖父母可以和我们住在一起而且我们可以照顾好他们。 The house is big, so my grandparents can ________ ________ us and we can ________ ________ ________ ________ them. 41．因此，我们应理性地使用人工智能。 Therefore, AI should _________ _________ wisely. 42．玩游戏时，我们应该遵守规则。 When we play games, we should ________ ________ ________. 43．这可以增加野生动物的数量。 It can ________ ________ ________ ________ wild animals. 44．野生动物的消失可能自然发生。 Loss of wildlife can ________ ________. 45．的确，没有植物我们无法生存。 Indeed, we ________ ________ ________ ________. 46．动物和人类有一种特殊的关系，我们应该尊重和关爱它们。 Animals and humans have ________ ________ ________, and we should respect and ________ ________ them. 47．——我可以喂你的金鱼吗？   ——对不起，恐怕你不能。 — ________ I ________ your goldfish?    — Sorry, I’m afraid you can’t. 48．我无法想象没有宠物的生活。它们对我意义重大。 I ________ ________ my life ________ my pets. They ________ a lot to me. 49．如果我们不能解决一个数学难题，他就会鼓励我们以一种新的方式来思考它。 _______ we cannot _______ _______ a difficult maths problem, he will encourage us to _______ _______ it _______ _______ _______ _______. 50．简单的选择就能产生巨大的影响。 Simple choices can ________ ________ _________ ________. 参考答案 一、 1．C 【解析】句意：——Millie，你决定好周末做什么了吗？——还没有。我可能去为老年人做志愿者。 need需要；must必须；may可能；should应该。根据答语“Not yet”可知，计划尚未确定，此处表示一种可能性。应填may。 2．C 【解析】句意：我们必须采取行动保护我们的地球，否则我们的居住环境将会变得更糟。 can能；may可能；must必须；could能。根据后半句“or our living environment will get worse”可知，为了避免环境变糟，我们“必须”采取行动，must表示必要性，符合语境。 3．A 【解析】句意：——我肚子疼。——你不应该吃这么多冰淇淋。 shouldn’t不应该；should应该；could可以；would将会。根据“I have a stomachache.”可知身体不舒服，推测是因为吃太多冰淇淋导致的，所以建议不应该吃这么多。应填shouldn’t。 4．C 【解析】句意：——你明天能来参加我的聚会吗？——抱歉，我必须学习。 Must必须；Should应该；Could能，可以；Would将会。根据语境可知，此处是邀请对方参加聚会，应用Could表示委婉的请求。 5．D 【解析】句意：根据校规，学生在开放日必须穿校服。 can能，可以；may可能，可以；need需要；must必须。根据题干中“According to the school rules”可知，穿校服是学校的规定，表示强制性的义务，因此填must。 6．A 【解析】句意：——我牙疼得很厉害。——你应该去看牙医并拍个X光片。 should应该；could能够；may可能；would将要。根据上句“I have a really bad toothache.”可知对方牙疼严重，下句是给出建议，应填should。 7．D 【解析】句意：所有客人都已经收到了电子邀请函，所以我们不必发送纸质卡片了。 should应该；can能；mustn’t禁止；needn’t不必。根据“All guests have received the e-invitation”可知，既然客人们都已收到电子邀请函，就没有必要再发送纸质卡片，表示“不必”。故 D。 8．C 【解析】句意：图书馆的书是供每个人使用的，你禁止在书上写字或带走任何书页。 may可能；need not不必；must not禁止；would not将不。根据“Books in the library are for everyone”可知这是公共规则，对于破坏书籍的行为应严格禁止，must not表示禁止，语气最强，符合语境。 9．C 【解析】句意：——看这里的标志！禁止拍照。——对不起，我不会了。 won’t将不会；needn’t不需要；mustn’t禁止；may not可能不。根据图片可知，禁止拍照，此处需填入禁止一词，故答案选C。 10．D 【解析】句意：——我必须在第一节课之前交科学报告吗？   ——不必，你可以午饭后给我。 mustn’t禁止，不要；can’t不能，不会；shouldn’t不应该；don’t have to不必，没有必要。must的一般疑问句的否定回答应该用don’t have to或needn’t，故答案选D。 11．A 【解析】句意：如果大卫没有管理好时间，他可能会熬夜。 may 可能；can’t 不能；should 应该；mustn’t 禁止。根据“if he doesn’t manage his time well”可知，此处表示推测，时间管理不好可能会导致熬夜的结果，表示可能性。应填may。 12．B 【解析】句意：——看看外套上的标志。它是什么意思？——它说这件外套必须用手洗。 can能；must必须；can’t不能；mustn’t禁止。根据常识，衣物洗涤标志通常标明必须遵循的洗涤方式，“必须手洗”是强制性要求，应填must。 13．C 【解析】句意：当年轻人学得更多时，他们能处理各种问题。 cannot不能；may可能；can能；could能。根据“When young people learn more”可知，学习更多知识会增强能力，因此表示“能够”处理问题，且句子陈述一般事实，用一般现在时。 14．A 【解析】句意：——妈妈，我现在能看电视吗？——不，太晚了。你现在必须去睡觉。 第一空表示向妈妈请求许可，应用 Can（能）；第二空根据“It’s too late”可知是强调义务，应用 must（必须）。mustn’t 意为禁止，can’t 意为不能，均不符合语境。 15．D 【解析】句意：——我可以借你的字典吗？——当然可以。给你。 Should应该；Must必须；Need需要；Can可以。根据答语“Sure. Here you are.”可知，此处是请求许可，应填Can。 16．B 【解析】句意：——我必须现在完成作业吗？——不，你不必。你可以在明天晚上之前完成它。 mustn’t禁止；needn’t不必；can’t不能；may not可能不；can能够；may可以；need需要；must必须。根据“Must I finish the homework right now?”可知，第一空是对must开头的一般疑问句的否定回答，应用needn’t；再根据“finish it before tomorrow evening”可知，第二空表示可以在明天晚上之前完成，应用may。 17．D 【解析】句意：——今年暑假你要去哪里？——我不确定。我可能去东北一个凉快的地方。 should应该；must必须；need需要；might可能。根据“I’m not sure.”可知，说话者不确定行程，表示可能性较小的推测，应填might。 18．B 【解析】句意：——Susan，今天下午你想和我们一起去购物吗？——我想去，但是我不得不先做作业。 May可能；have to不得不；can能；has to不得不。根据“I’d love to, but…”可知前后语意转折，表示虽然想去但有事情必须做，体现必要性；主语是I，应填have to。 19．C 【解析】句意：你不需要买任何东西。明天直接来我的派对就好。我已经准备好了所有东西。 can’t不能；mustn’t禁止；needn’t不必；wouldn’t不会。根据“I’ve got everything ready.我已经准备好了所有东西”可知，对方不必买任何东西，因此选needn’t。 20．C 【解析】句意：如果你牙疼得很厉害，你应该去看牙医。 would会，愿意；couldn’t不能；should应该；shouldn’t不应该。根据“if you have a really bad toothache”可知，牙疼厉害时，合理的建议是去看牙医，should表示建议。 21．D 【解析】句意：你在图书馆里不准大声说话。 need需要；must必须；needn’t不必；mustn’t禁止/不准。根据常识可知图书馆是安静场所，禁止大声说话，应填mustn’t。 22．C 【解析】句意：——我可以用一下你的字典吗？我找不到我的了。——抱歉，不可以。我正在用。 must必须；should应该；may可以；can可以；can’t不可以 。第一空是委婉请求借用物品，可用Can/May；第二空由Sorry和正在使用可知要作否定回答，以Can提问用can’t回应，应填Can; can’t。 23．B 【解析】句意：——你禁止在森林里玩火。它可能引发大火并带来巨大危险。 needn’t不必；mustn’t禁止；shouldn’t不应该；may not可能不会。根据“It may cause a big fire and bring great danger.”可知，在森林玩火后果严重，此处表示严格禁止，语气最强，应填mustn’t。 24．D 【解析】句意：妈妈说暴风雨期间我们绝对不能外出，这很危险。 can能够；should应该；must必须；mustn’t禁止。根据“It’s dangerous”可知暴风雨外出存在危险，语气表明明令禁止，mustn’t侧重严禁做某事，符合语境。 25．D 【解析】句意：每个人必须遵守生活中的各种规则。没有规则，就没有秩序。 can’t不能；mustn’t禁止；can能；must必须。根据后句“No rules, no order.”可知，此处强调遵守规则的必要性及义务。应选must。 26．B 【解析】句意：——做完作业后我可以出去玩吗？——是的，你可以，但是你必须在7点前回来。 May可以（请求许可，较正式）；can能/可以（请求许可，常用）；must必须；can’t不能；Need需要；should应该。第一空请求许可，May表示委婉请求；第二空回答“May I...”句型，肯定回答用“Yes, you can”，用can；第三空前有转折词but，表示强制要求，用must表示“必须”；应填May; can; must。 27．A 【解析】句意：我们在走廊里禁止奔跑。这是我们的校规之一。 mustn’t禁止；have to不得不；can能；may可以。根据“It’s one of our school rules.”可知，在走廊奔跑是违反校规的危险的行为，此处表示禁止做某事，应填mustn’t。 28．C 【解析】句意：——我们每天早上都必须练习钢琴吗？——不，我们不需要。 can’t不能；mustn’t禁止；don’t have to不必；must必须。以Must开头的一般疑问句，其否定回答常用don’t have to 或 needn’t，表示“不必”，应填don’t have to。 29．D 【解析】句意：——我们现在必须完成作业吗？——不，不必了。你们现在可以走了。 根据“You can leave now.”可知，现在不需要完成作业，应用否定回答。Must引导的一般疑问句，否定回答用needn’t表示“不必”；mustn’t表示“禁止”，不符合语境。 30．B 【解析】句意：——这项任务看起来很难。——别担心，吉姆。有了团队合作，你能够按时完成它。 must必须；can能、可以；need需要；might可能。根据“Don’t worry”及“With teamwork”可知，说话者在鼓励对方有了团队合作就有能力按时完成，因此填“can”。 二、 31． raise money 【解析】原句中“筹集资金”为关键词，对应固定搭配raise money，should后接动词原形。 32． can’t afford to 【解析】“负担不起”是关键词；can’t表示“不能、无法”；“afford”意为“负担得起（费用）”，后面常接不定式to do。故填can’t；afford；to。 33． can’t afford to 【解析】该句为一般现在时，“负担不起做某事”为can’t afford to do sth.。 34． make a big difference 【解析】原句中的“带来巨大的改变”是关键词，make a big difference意为“产生很大影响、带来巨大改变”，can是情态动词，后接动词原形。 35． learn from 【解析】根据中文“从……学到”对应英文固定搭配“learn from”，且“those who help others”作为宾语；情态动词can后填动词原形。故填learn；from。 36． come along 【解析】原句中“一起去”是关键词，表示“一起去”的短语是come along。本句为一般现在时，情态动词can后接动词原形。 37． take action 【解析】原句的关键词是“采取行动”，对应的表达为“take action”。情态动词should后接动词原形。 38． turn into 【解析】原句中“变成”是关键词，表示“变成”的短语是turn into。本句中can为情态动词，后接动词原形。 39． take eyes off at last 【解析】原句中“舍不得把眼睛从……移开”“直到最后”是关键词，英文中可用“take one’s eyes off...”表示“把目光从……移开”，couldn’t后接动词原形take；“眼睛”对应的英文是eyes（复数，因为主语是“我们”）；“直到最后”对应的英文是at last，放在句末作时间状语。 40． live with take good care of 【解析】原句中“和……住在一起”是关键词，对应的英文表达是live with；“照顾好”对应的固定短语是take good care of，本句中can是情态动词，情态动词后需接动词原形。 41． be used 【解析】原句中“应理性地使用”是关键词，表示被动语态和情态动词后的结构。本句主语“AI”与动词“use”之间为被动关系，故应用被动语态；情态动词“should”后需接动词原形，故填be；used。 42． follow the rules 【解析】原句中“遵守规则”是关键词，表示“遵守规则”的短语是follow the rules。句中“should”是情态动词，后面要跟动词原形，所以用“follow”。故填follow；the；rules。 43． increase the number of 【解析】原句中“增加数量”是关键词，表示“使……数量增加”的短语是increase the number of，can后接动词原形。 44． happen naturally 【解析】原句中“自然发生”是关键词，表示“发生”的动词为“happen”，情态动词can后接动词原形；表示“自然”的副词为“naturally”。 45． can’t live without plants 【解析】原句中“无法生存”和“没有植物”是核心语义，表示“无法生存”的短语是can’t live，“没有植物”用without plants表达。句子为一般现在时，主语是we，情态动词can后接动词原形，否定形式为can’t。 46． a special relationship care for 【解析】原句中“一种特殊的关系”“关爱”是关键词，“一种特殊的关系”用短语a special relationship表示，“关爱它们”对应短语care for them，情态动词should后接动词原形，故填a；special；relationship；care；for。 47． May feed 【解析】原句中“可以喂”是关键词，此处是礼貌请求许可，应使用情态动词May，“喂”的英文表达是feed，情态动词May后需接动词原形，因此直接使用feed即可。故填May；feed。 48． can’t imagine without mean 【解析】原句中“无法想象”、“没有”和“意义重大”是关键词，对应的词分别是can’t imagine、without和mean。情态动词后接动词原形，所以can’t后用原形imagine；表示“没有”用介词without，刚好符合“没有宠物的生活”的句意；固定搭配mean a lot to sb意为“对某人意义重大”，主语they是复数，一般现在时谓语用动词原形mean。 49． If work out think about in a new way 【解析】原句中“如果、解决、思考、以一种新的方式”是关键词，表示“如果”的连词是If，置于句首，首字母大写；表示“解决”的动词短语是work out，置于情态动词之后，用动词原形；表示“思考”的动词短语是think about，置于不定式符号to之后，需用动词原形；表示“以一种新的方式”的短语是in a new way。 50． make a huge difference 【解析】原句中“产生巨大的影响”是关键词，make a huge difference为固定短语，意为“产生巨大的影响”； 情态动词can后接动词原形。 $