用所给词的正确形式填空100题（Units 1-4）2026-2027学年八年级英语上册期中满分必刷题（译林版）

2026-2027学年八年级英语上册期中满分必刷题（译林版新教材） 用所给词的正确形式填空100题（Units 1-4） 题型说明：共100小题，每单元25题；每小题1分，满分100分。 Unit 1 Friendship (1–25) 1. Ann is a little ________ (tall) than me, so she sits behind me. 2. Tom is a little ________ (fat) than he was last year. 3. Mr Li is much ________ (patient) than other teachers when we ask him questions. 4. That was the ________ (bad) film I have ever seen. 5. Lucy is one of the ________ (funny) students in our class. 6. Our school is becoming ________ and ________ (beautiful) with more and more trees. 7. The more we share with others, the ________ (happy) we will feel. 8. Which is ________ (dangerous), swimming in the river or climbing a hill? 9. His ________ (honest) makes everyone like to make friends with him. 10. True ________ (friend) is more important than money. 11. Jack is ________ (humour), and he often makes us laugh in class. 12. My cousin is a ________ (cheer) girl with a big smile on her face. 13. The ________ (energy) boy never feels tired after two hours of PE class. 14. We all admire the young man for his ________ (brave). 15. We should never read others' ________ (person) letters. 16. He left his keys at school again because he is too ________ (care). 17. Their ________ (laugh) filled the whole classroom. 18. Simon is a ________ (trust) friend and he always keeps secrets for us. 19. The little girl is ________ (scare) of dogs, so she never touches them. 20. Good friends always keep each other's ________ (secret). 21. Sam would rather ________ (be) honest than tell a lie. 22. It is important for us ________ (keep) the secrets of our friends. 23. Betty is always ready ________ (help) people in need. 24. She is afraid of ________ (lose) her best friend, so she says sorry first. 25. My friend often encourages me ________ (not give) up when I meet difficulties. Unit 2 School life (26–50) 26. Our school library has ________ (many) books than theirs. 27. Lucy has ________ (few) friends than her sister because she is shy. 28. There is ________ (little) water in this bottle than in that one. 29. Our monitor is as ________ (activity) as any other student in our class. 30. This English dictionary is not so ________ (use) as that one. 31. Class Two has the ________ (many) students of all the classes in our school. 32. Amy spends the ________ (little) money on snacks of the three girls. 33. The number of students in our school ________ (be) about 1,500. 34. We had a long ________ (discuss) about how to make our school life better. 35. Can you give me some ________ (suggest) on how to improve my English? 36. Reading more books can bring a great ________ (improve) to your writing. 37. Our teacher often tells us the ________ (important) of good study habits. 38. A good ________ (understand) of the text helps us answer questions quickly. 39. The students in our class answer the teacher's questions ________ (quick) and correctly. 40. We have a ________ (week) class meeting every Friday afternoon. 41. School is over at 4:30 p.m. ________ (usual), but on Fridays it ends earlier. 42. There are many ________ (different) between British and American schools. 43. Our class were the ________ (win) of the school football match. 44. Betty is good at ________ (France) because she lived in Paris for two years. 45. Our classroom is on the ________ (eight) floor of the teaching building. 46. We are all looking forward to ________ (visit) the new library. 47. Doing sports every day can make us ________ (health). 48. Our teachers often help us ________ (solve) problems after class. 49. It ________ (take) me twenty minutes to walk to school every day. 50. Remember ________ (turn) off the lights before you leave the classroom. Unit 3 To be a good learner (51–75) 51. Jack runs ________ (fast) than me, so he always wins the race. 52. Of all the students, Lily does her homework the ________ (careful). 53. Jim speaks English much ________ (well) than before because he practises every day. 54. He did ________ (badly) of all the players in the match. 55. The children enjoyed ________ (they) very much at the school English Corner. 56. You'd better do the work ________ (you), and don't always ask others for help. 57. The little boy learned to use the dictionary by ________ (he). 58. Learning is a lifelong journey, and we should never stop teaching ________ (we). 59. Our English teacher gave us a ________ (speak) about how to learn English well. 60. Please read the new words ________ (correct) and clearly. 61. Good ________ (pronounce) helps you speak English more beautifully. 62. If you learn new words by heart, you will make fewer ________ (spell) mistakes. 63. We were ________ (surprise) to hear that Mike won the first prize in the English contest. 64. Learning a language ________ (main) means using it as much as possible. 65. The ________ (tour) from other countries can also learn Chinese in our school. 66. You can work out this maths problem ________ (easy) if you use the right method. 67. As a lifelong ________ (learn), you should keep asking questions. 68. It is ________ (difficulty) for me to remember so many long words. 69. Listening to English songs is a ________ (wonder) way to learn new words. 70. If you want to be good at English, you must be ________ (confidence) first. 71. You should pay attention to ________ (listen) to your teacher carefully in class. 72. At first, I had difficulty ________ (remember) the long words. 73. We can listen to English songs ________ (improve) our listening. 74. ________ (plan) your study carefully is the first step to be a good learner. 75. Our teacher advised us ________ (not be) afraid of making mistakes. Unit 4 Hands-on fun (76–100) 76. ________ (read) the instructions carefully before you start the DIY job. 77. ________ (not put) the glue on your clothes, or it will be hard to clean. 78. ________ (let) us make a bird box together this weekend. 79. ________ (tidy) your room now, and you will find your scissors easily. 80. You should ________ (fold) the paper carefully to make a paper rose. 81. You shouldn't ________ (leave) the paint open after you finish your work. 82. You'd better ________ (not use) too much glue on the card. 83. It is ________ (possible) to finish such a big DIY job in only ten minutes. 84. I was ________ (lucky) and cut my finger while making the model plane. 85. Your answer is ________ (correct), so please read the instructions again. 86. Simon is too ________ (patient) to finish the job, so he often gives up. 87. Please keep your desk tidy, because an ________ (tidy) desk makes your room look bad. 88. Read the ________ (instruct) carefully before you use the new tool. 89. Good ________ (prepare) makes the DIY job much easier. 90. My bedroom is always in a ________ (mess) state after I do DIY jobs. 91. A ________ (power) tool can help you put up a shelf in a short time. 92. The ________ (paint) is busy painting the wall in the living room. 93. These two ________ (handyman) are helping my father fix the door. 94. The little bird box is made of ________ (wood) boards. 95. When the job is ________ (complete) done, you will feel proud of yourself. 96. My brother is crazy about ________ (make) things by himself. 97. The lovely paper rose on the desk caught ________ (I) eye at once. 98. He watched TV instead of ________ (finish) his homework last night. 99. Keep ________ (practise), and you will become a good handyman. 100. Why not ________ (have) a go at making a paper flower by yourself? 参考答案与详细解析 Unit1 Friendship（1–25） 1. taller 解析：两者相比较用“比较级 + than”；tall 是单音节词，直接加 -er。 2. fatter 解析：比较级 + than；fat 是“辅音字母 + 元音字母 + 辅音字母”的重读闭音节词，先双写末尾辅音字母 t 再加 -er。 3. more patient 解析：much 修饰形容词比较级，表示“……得多”；patient 是后缀形容词（-ent），不管音节多少都在前面加 more。 4. worst 解析：“the + 最高级 + I have ever seen”表示“我看过的最……的”；bad 的最高级是不规则变化 worst。 5. funniest 解析：one of the + 形容词最高级 + 可数名词复数；funny 以“辅音字母 + y”结尾，变 y 为 i 再加 -est。 6. more and more beautiful 解析：“比较级 + and + 比较级”表示“越来越……”；多音节词用“more and more + 形容词原级”。 7. happier 解析：“the + 比较级, the + 比较级”表示“越……就越……”；happy 变比较级时把 y 改为 i 再加 -er。 8. more dangerous 解析：“Which/Who is + 比较级, A or B?”用于两者中比较选择；dangerous 是多音节词，用 more 构成比较级。 9. honesty 解析：形容词性物主代词 His 后接名词；honest（adj. 诚实的）→ honesty（n. 诚实）。 10. friendship 解析：is 前需要名词作主语；friend（n. 朋友）→ friendship（n. 友谊）。 11. humorous 解析：be 动词后接形容词作表语；humour（n. 幽默）→ humorous（adj. 幽默的）。 12. cheerful 解析：名词 girl 前用形容词作定语；cheer（n./v. 欢呼）→ cheerful（adj. 快乐的）。 13. energetic 解析：名词 boy 前用形容词作定语；energy（n. 精力）→ energetic（adj. 精力充沛的）。 14. bravery 解析：形容词性物主代词 his 后接名词；brave（adj. 勇敢的）→ bravery（n. 勇敢）。 15. personal 解析：名词 letters 前用形容词作定语；person（n. 人）→ personal（adj. 个人的）。 16. careless 解析：too 后接形容词，且“又把钥匙忘在学校”说明他粗心；care（n. 小心）→ careless（adj. 粗心的），-less 表示“没有……的”。 17. laughter 解析：形容词性物主代词 Their 后接名词作主语；laugh（v. 笑）→ laughter（n. 笑声）。 18. trustworthy 解析：名词 friend 前用形容词；trust（v./n. 信任）→ trustworthy（adj. 值得信赖的）。 19. scared 解析：be scared of 害怕……；-ed 形容词修饰人，表示“感到害怕的”。 20. secrets 解析：each other's 后接可数名词，此处指不止一个秘密，用复数 secrets。 21. be 解析：would rather do sth than do sth 宁愿做……而不愿做……；would rather 后接动词原形。 22. to keep 解析：It is + adj. + for sb. + to do sth. 句型，it 是形式主语，真正的主语是不定式。 23. to help 解析：be ready to do sth 乐于/愿意做某事，to 后接动词原形。 24. losing 解析：be afraid of 中 of 是介词，后面接动名词 doing。 25. not to give up 解析：encourage sb. (not) to do sth 鼓励某人（不要）做某事，否定式在 to 前加 not。 Unit2 School life（26–50） 26. more 解析：两者比较用“more + 可数名词复数 + than”；many 的比较级是 more。 27. fewer 解析：few 修饰可数名词复数，比较级为 fewer，构成“fewer + 可数名词复数 + than”。 28. less 解析：little 修饰不可数名词，比较级为 less，构成“less + 不可数名词 + than”。 29. active 解析：as + 形容词原级 + as 表示“和……一样……”；activity（n. 活动）→ active（adj. 积极的，活跃的）。 30. useful 解析：not so + 形容词原级 + as = not as + 原级 + as，表示“不如……那样……”；use（n./v. 使用）→ useful（adj. 有用的）。 31. most 解析：三者或三者以上比较用最高级，of all...表示比较范围；many 的最高级是 most。 32. least 解析：三者比较用最高级；little 的最高级是 least，the least 表示“最少的”。 33. is 解析：the number of + 可数名词复数作主语时，谓语动词用单数；a number of + 复数作主语时谓语用复数。 34. discussion 解析：a long 后接名词；discuss（v. 讨论）→ discussion（n. 讨论）。 35. suggestions 解析：some 后接可数名词复数；suggest（v. 建议）→ suggestion（n. 建议），复数 suggestions。 36. improvement 解析：a great 后接名词；improve（v. 提高）→ improvement（n. 改善，提高）。 37. importance 解析：the 后接名词；important（adj. 重要的）→ importance（n. 重要性）。 38. understanding 解析：a good 后接名词作主语；understand（v. 理解）→ understanding（n. 理解）。 39. quickly 解析：and 并列 correctly（副词），修饰动词 answer 也用副词；quick（adj.）→ quickly（adv.）。 40. weekly 解析：名词 class meeting 前用形容词；week（n. 周）→ weekly（adj. 每周的）。 41. Usually 解析：副词作句首状语修饰整个句子；usual（adj. 通常的）→ usually（adv. 通常），句首首字母大写。 42. differences 解析：many 后接可数名词复数；different（adj. 不同的）→ difference（n. 不同之处），复数 differences。 43. winners 解析：the 后接表示人的名词，比赛中获胜的是多个人，用复数；win（v. 赢）→ winner（n. 获胜者）。 44. French 解析：be good at 后接名词；France（n. 法国）→ French（n. 法语）。此处指“擅长法语”。 45. eighth 解析：表示“第几层”要用序数词；eight（基数词）→ eighth（序数词）。 46. visiting 解析：look forward to 中 to 是介词，后面接动名词 doing。 47. healthy 解析：make sb. + 形容词，表示“使某人……”。health（n. 健康）→ healthy（adj. 健康的）。 48. solve 解析：help sb. (to) do sth. 帮助某人做某事，此处用动词原形。 49. takes 解析：It takes sb. some time to do sth. 句型；主语 It 是第三人称单数，一般现在时用 takes。 50. to turn 解析：remember to do sth. 记得去做某事（事情还没做），与 remember doing sth. 记得做过某事不同。 Unit3 To be a good learner（51–75） 51. faster 解析：两者比较用副词比较级 + than；副词比较级的构成与形容词基本相同，fast→faster。 52. most carefully 解析：of all the...表示三者以上范围，用副词最高级；多音节副词前加 most。 53. better 解析：much 修饰副词比较级；well 的比较级是不规则变化 better。 54. worst 解析：of all the players 表示三者以上范围，用副词最高级；badly 的最高级是不规则变化 worst，句首可省略 the。 55. themselves 解析：enjoy oneself 玩得开心；主语 The children 是复数，反身代词用 themselves。 56. yourself 解析：反身代词作主语的同位语，起强调作用，意为“你亲自”；主语是 you，用 yourself。 57. himself 解析：by oneself 独自地，靠自己；主语 The little boy 是男性单数，用 himself。 58. ourselves 解析：teach oneself 自学；主语是 we，反身代词在人称和数上要与主语一致，用 ourselves。 59. speech 解析：a 后接名词；speak（v. 说）→ speech（n. 演讲）。 60. correctly 解析：and 并列 clearly（副词），修饰动词 read 也用副词；correct（adj. 正确的）→ correctly（adv.）。 61. pronunciation 解析：形容词 good 后接名词作主语；pronounce（v. 发音）→ pronunciation（n. 发音）。 62. spelling 解析：spelling mistakes 拼写错误；spell（v. 拼写）→ spelling（n. 拼写）。 63. surprised 解析：be surprised to do sth. 做某事感到惊讶；-ed 形容词修饰人，surprising 修饰事物。 64. mainly 解析：副词修饰动词 means；main（adj. 主要的）→ mainly（adv. 主要地）。 65. tourists 解析：The 后接表示人的名词，且从其他国家来的游客不止一个，用复数；tour（n./v. 旅行）→ tourist（n. 游客）。 66. easily 解析：副词修饰动词 work out；easy 以“辅音字母 + y”结尾，变 y 为 i 再加 -ly。 67. learner 解析：a 后接名词，且句意是“终身学习者”；learn（v. 学习）→ learner（n. 学习者）。 68. difficult 解析：It is + adj. + for sb. to do sth.；difficulty（n. 困难）→ difficult（adj. 困难的）。 69. wonderful 解析：名词 way 前用形容词作定语；wonder（n. 惊奇）→ wonderful（adj. 精彩的，极好的）。 70. confident 解析：be 动词后接形容词作表语；confidence（n. 自信）→ confident（adj. 自信的）。 71. listening 解析：pay attention to 中 to 是介词，后面接动名词 doing。 72. remembering 解析：have difficulty (in) doing sth. 做某事有困难，介词后接动名词。 73. to improve 解析：动词不定式作目的状语，表示“为了提高听力”。 74. Planning 解析：动名词短语作句子主语，谓语用单数 is；句首首字母大写。 75. not to be 解析：advise sb. (not) to do sth. 建议某人（不要）做某事，否定式在 to 前加 not。 Unit4 Hands-on fun（76–100） 76. Read 解析：祈使句的肯定式以动词原形开头，表示指令或要求；句首首字母大写。 77. Don't put 解析：祈使句的否定式用“Don't + 动词原形 + 其他”，表示劝阻。 78. Let 解析：Let's... / Let us... 用于提出共同做某事的建议，let 后接宾语 + 动词原形。 79. Tidy 解析：祈使句 + and/or + 陈述句：and 表示“那么就会……”，or 表示“否则就……”，祈使句部分用动词原形开头。 80. fold 解析：should 是情态动词，后面接动词原形，表示建议。 81. leave 解析：shouldn't = should not，后接动词原形，表示“不应该做某事”。 82. not use 解析：had better (not) do sth. 最好（别）做某事，had 常缩写为 'd，否定式直接在 better 后加 not。 83. impossible 解析：根据“十分钟内完成这么大的手工活”可知句意为“不可能”；possible 加否定前缀 im- 构成 impossible。 84. unlucky 解析：根据“做飞机模型时割破了手指”可知是“不幸的”；lucky 加否定前缀 un- 构成 unlucky。 85. incorrect 解析：“请再读一遍说明书”说明答案是“不正确的”；correct 加否定前缀 in- 构成 incorrect。 86. impatient 解析：too...to... 结构中用形容词，且“经常放弃”说明他“没有耐心”；patient 加否定前缀 im- 构成 impatient。 87. untidy 解析：根据“让房间看起来糟糕”可知桌子是“不整洁的”；tidy 加否定前缀 un- 构成 untidy。 88. instructions 解析：说明书通常不止一条，且 read 的宾语用复数；instruct（v. 指导）→ instruction（n. 说明），复数 instructions。 89. preparation 解析：形容词 good 后接名词作主语；prepare（v. 准备）→ preparation（n. 准备）。 90. messy 解析：in a messy state 意为“处于凌乱的状态”，名词 state 前需用形容词修饰；mess（n. 杂乱）→ messy（adj. 杂乱的）。注意：不能说 in a messy（形容词不能作介词宾语），表示“乱七八糟”的名词短语是 in a mess。 91. powerful 解析：名词 tool 前用形容词作定语；power（n. 力量）→ powerful（adj. 强有力的）。 92. painter 解析：The 后接表示人的名词作主语，且句中已有谓语 is painting；paint（v. 粉刷）→ painter（n. 画家，粉刷工）。 93. handymen 解析：two 后接可数名词复数；man 作后缀构成的名词变复数时把 man 变成 men，故 handyman→handymen。 94. wooden 解析：名词 boards 前用形容词作定语；wood（n. 木头）→ wooden（adj. 木制的）。 95. completely 解析：副词修饰动词 done；complete（adj. 完整的）→ completely（adv. 完全地）。 96. making 解析：be crazy about 中 about 是介词，后面接动名词 doing。 97. my 解析：catch one's eye 引起某人注意，one's 要随主语变化，此处用形容词性物主代词 my。 98. finishing 解析：instead of 中 of 是介词，后面接动名词 doing。 99. practising 解析：keep doing sth. 一直做某事；practise 以不发音的 e 结尾，加 -ing 时去 e。 100. have 解析：Why not + 动词原形？用于提出建议，意为“为什么不做……呢？”。 本卷知识点梳理 Unit 1 Friendship 一、重点词汇与词形转换 honest→honesty（诚实）；friend→friendship（友谊）；humour→humorous（幽默的）；cheer→cheerful（快乐的）；energy→energetic（精力充沛的）；brave→bravery（勇敢）；person→personal（个人的）；care→careless（粗心的）；laugh→laughter（笑声）；trust→trustworthy（值得信赖的）；scare→scared（害怕的）；secret→secrets（秘密，复数） 二、重点短语 a little bit 有点儿；sense of humour 幽默感；feel like doing sth. 想做某事；give up on 对……不抱希望；keep secrets 保守秘密；get along with sb. 与某人和睦相处；have a point 有道理；be ready to do sth. 乐于做某事；would rather do sth. than do sth. 宁愿……而不愿…… 三、核心语法：形容词的比较级和最高级 1. 构成：单音节词加 -er/-est（tall→taller→tallest）；重读闭音节双写末尾辅音字母（fat→fatter→fattest）；“辅音字母 + y”结尾变 y 为 i（funny→funnier→funniest）；多音节及 -ful/-ous/-ent 等后缀形容词前加 more/most；不规则变化 good/well→better→best，bad/badly→worse→worst，many/much→more→most，little→less→least。 2. 常用句式：A + 比较级 + than + B；the + 最高级 + in/of 范围；one of the + 最高级 + 名词复数；Which/Who is + 比较级, A or B?；比较级 + and + 比较级（越来越……）；the + 比较级, the + 比较级（越……越……）。 3. 比较级前的修饰语：much、even、far、a lot、a little、still 等，如 much more patient。 Unit 2 School life 一、重点词汇与词形转换 discuss→discussion（讨论）；suggest→suggestion（建议，复数 suggestions）；improve→improvement（改善）；important→importance（重要性）；understand→understanding（理解）；quick→quickly（迅速地）；week→weekly（每周的）；usual→usually（通常）；different→difference（不同之处，复数 differences）；win→winner（获胜者，复数 winners）；France→French（法语）；eight→eighth（序数词） 二、重点短语 a mixed school 一所男女混合的学校；foreign languages 外语；twice a week 一周两次；look forward to doing 期待做某事；have a go 尝试一下；apart from 除……之外；teach oneself 自学；borrow...from 从……借；stay up late 熬夜；be curious about 对……好奇；find out 查明；run into problems 遇到问题；express oneself 表达自己；the number of ……的数量；spend time (in) doing 花时间做某事 三、核心语法：数量的比较与原级比较 1. more + 可数名词复数 + than（比……多）；fewer + 可数名词复数 + than（比……少）；less + 不可数名词 + than（比……少）。 2. 三者或三者以上比较：the most（最多）、the fewest（最少，可数）、the least（最少，不可数）。 3. 原级比较：as + 形容词/副词原级 + as（和……一样）；not as/so + 原级 + as（不如……）。 4. 主谓一致：the number of + 复数名词作主语，谓语用单数；a number of + 复数名词作主语，谓语用复数。 Unit 3 To be a good learner 一、重点词汇与词形转换 speak→speech（演讲）；correct→correctly（正确地）；pronounce→pronunciation（发音）；spell→spelling（拼写）；surprise→surprised（感到惊讶的）；main→mainly（主要地）；tour→tourist（游客，复数 tourists）；easy→easily（容易地）；learn→learner（学习者）；difficulty→difficult（困难的）；wonder→wonderful（精彩的）；confidence→confident（自信的） 二、重点短语 learn about 了解；make progress 取得进步；pay attention to 注意；have difficulty (in) doing sth. 做某事有困难；be worth doing 值得做；be surprised at 对……感到惊讶；say to oneself 自言自语；enjoy oneself 玩得开心；teach oneself 自学；by oneself 独自；lose oneself in 沉浸于；help oneself to 随便吃/喝 三、核心语法：副词的比较级和最高级 1. 构成：单音节和少数双音节副词加 -er/-est（fast→faster→fastest，early→earlier→earliest）；多音节副词前加 more/most（carefully→more carefully→most carefully）；不规则变化 well→better→best，badly→worse→worst，far→further/farther→furthest/farthest。 2. 用法：两者比较用“副词比较级 + than”；三者以上用“the + 副词最高级 + in/of 范围”，副词最高级前的 the 可以省略。 四、核心语法：反身代词 myself, ourselves, yourself, yourselves, himself, herself, itself, themselves。用法：①作宾语（enjoy oneself / teach oneself / hurt oneself）；②作表语（She isn't quite herself today.）；③作主语或宾语的同位语起强调作用（I can finish it myself.）；④用于固定短语（by oneself 独自、for oneself 亲自、say to oneself 自言自语、look after oneself 照顾自己）。注意：反身代词在人称、性别、数上必须与所指代的对象一致，且不能单独作主语。 Unit 4 Hands-on fun 一、重点词汇与词形转换 lucky→unlucky（不幸的）；correct→incorrect（不正确的）；patient→impatient（没有耐心的）；tidy→untidy（不整洁的）；possible→impossible（不可能的）；instruct→instructions（用法说明，复数）；prepare→preparation（准备）；mess→messy（杂乱的）；power→powerful（强有力的）；paint→painter（画家）；handyman→handymen（手巧的人，复数）；wood→wooden（木制的）；complete→completely（完全地） 二、重点短语 be crazy about 热衷于；a born handyman 一个天生手巧的人；make a mistake 犯错；power cut 停电；fill...with 使……充满；in a mess 乱七八糟；catch one's eye 引起某人注意；instead of 代替，而不是；put up 张贴，搭建；put in 安装；fall over 摔倒；give sb. a hand 帮某人一把；take a course 上课程；have a go 试一下；keep doing sth. 一直做某事；Why not do sth.? 为什么不做……呢？ 三、核心语法一：祈使句 1. 肯定式：动词原形 + 其他（Tidy your room now.）；加 please 语气更委婉（Please read the instructions.）。 2. 否定式：Don't + 动词原形 + 其他（Don't be nervous!/Don't put the glue here.）。 3. 建议式：Let's + 动词原形 + 其他（Let's make a paper rose together.）。 4. 祈使句 + and/or + 陈述句：and 表结果（那么就会……），or 表警告（否则就……）。 四、核心语法二：should 和 had better 1. should（shouldn't）+ 动词原形，表示建议，语气较委婉，无人称和数的变化。 2. had better (had better not / 'd better) + 动词原形，表示建议，语气比 should 强，否定式直接在 better 后加 not，无缩写形式。 五、核心语法三：前缀 un- / in- / im- 构成反义形容词 lucky→unlucky、usual→unusual、tidy→untidy、sure→unsure、friendly→unfriendly；correct→incorrect、complete→incomplete、active→inactive、expensive→inexpensive；possible→impossible、patient→impatient、polite→impolite、perfect→imperfect。注意：im- 一般用在以 p、b、m 开头的形容词前。 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $