Unit 5 Good Manners 单元语法（too...to...和enough...to...的用法）-2025-2026学年八年级英语下册单元重难点易错题精练（译林版）

**基本信息** 聚焦“too...to...和enough...to...”用法，通过分层题型构建“基础-转换-应用”的知识逻辑链，强化语言能力与思维品质。 **专项设计** |模块|题量/典例|题型特征|知识逻辑| |----|-----------|----------|----------| |单项选择|20题|考查结构辨析（如enough位置、too...to...否定意义）|从基本结构（too...to...表否定，enough...to...表肯定）切入，覆盖核心用法| |完成句子|10题|强调同义转换（如so...that...与too...to.../enough...to...转换）|实现结构间的逻辑推导，提升语言转换能力| |短文填空|10题|注重语境应用（在语篇中正确使用结构）|从单句到语篇，形成“基础-转换-应用”的递进逻辑，培养综合语言运用能力|

班级 姓名 学号 分数 Unit 5 Good Manners too...to...和enough...to...的用法 （时间：60分钟，满分：100分） 一、单项选择(本大题共20小题，每小题2分，共40分) 1．The girl is ________ to go to school. A．enough old B．old enough C．too old D．so old 【答案】B 【详解】句意：这个女孩年龄足够大可以去上学了。 enough修饰形容词时须放在形容词之后，old enough足够大；too old 太大，too +adj.+to do sth.表示“太……而不能”；so old如此大。本句固定结构“adj. + enough + to do sth.”表示“足够……去做某事”。 2．This math problem is not easy ________ for the new students ________ out in such a short time. A．enough; work B．too; to work C．so; working D．enough; to work 【答案】D 【详解】句意：这道数学题对新生来说没那么容易在短时间内解出来。 enough足够，修饰形容词时要后置；too太，放在形容词前；so如此，放在形容词前。空处位于形容词easy后，应用enough，排除BC；enough后接动词不定式to do sth.，构成“be+adj.+enough+for sb.+to do sth.”句型，意为“对某人来说做某事足够……”。根据语法规则，第一空用enough，第二空用to work。 3．Please wait patiently ______ to let everyone get their turn. A．enough B．too C．very D．so 【答案】A 【详解】句意：请足够耐心地等待，让每个人都有轮到自己的机会。 enough足够地；too太；very非常；so如此。enough修饰副词时需放在被修饰词之后，too、very、so修饰副词时通常在被修饰词之前；本句中空白处位于副词“patiently”之后，“enough”符合用法要求。应填enough。 4．It’s not _________ fix the problem, although time is clearly getting short. A．late enough B．early enough C．too late to D．too early to 【答案】C 【详解】句意：虽然时间明显变得紧迫了，但解决问题还不太晚。 late enough足够晚；early enough足够早；too late to太晚而不能去……；too early to太早而不能去……。根据句中连词although可知，前后分句之间存在转折关系，尽管时间紧迫，但解决问题仍然来得及。固定结构too... to...，其否定形式not too...to...意为“还来得及做某事”，结合语境，“not too late to fix the problem”符合逻辑。 5．The new rule about school manners is _________ understand. Even the new students can follow it easily. A．too clear to B．clear enough to C．too difficult to D．difficult enough 【答案】B 【详解】句意：关于学校礼仪的新规则足够清楚以至于能够理解。甚至新生都能轻易遵守它。 too...to...太……以至于不能……，表否定；adj.+enough to do足够……去做……，表肯定。根据后句“Even the new students can follow it easily.”可知，规则简单易懂，应用“clear enough to understand”结构，表肯定含义。 6．The little girl was _________ understand why we shouldn’t talk with food in our mouths until her mom explained it patiently again and again. A．so young that B．too young to C．young enough to D．young enough that 【答案】B 【详解】句意：这个小女孩太小了而不能理解为什么我们嘴里有食物时不应该说话，直到她妈妈耐心地一遍又一遍地解释。 so...that...和young enough that后需接从句，空后为动词原形understand，排除A、D；根据“until her mom explained it patiently”可知，小女孩起初无法理解，too...to...表否定含义，意为“太年幼而不能理解”；young enough to表肯定含义，不符合逻辑，排除C。 7．In many countries, people are _________ follow others instead of pushing past them when walking on crowded streets. A．too polite to B．so polite that C．polite enough to D．polite enough that 【答案】C 【详解】句意：在许多国家，当走在拥挤的街道上时，人们足够有礼貌去跟随他人而不是从他们身边挤过去。 too... to...表示否定含义，意为太……而不能……；so... that...后接从句；adj+enough to do表示肯定含义，意为足够……去做某事。根据句意，人们跟随他人是礼貌的行为，且follow为动词原形，符合enough to 结构。 8．Jenny works ________ a kindergarten teacher, and she is ________ to stay with naughty kids all day long. A．for, patient enough B．for; enough patient C．as; patient enough D．as; enough patient 【答案】C 【详解】句意：珍妮是一名幼儿园老师，她有足够的耐心整天和淘气的孩子们待在一起。 work for为……工作；work as作为……工作。根据“a kindergarten teacher”可知，此处表示作为幼儿园老师工作，应填as；patient耐心的，形容词；enough足够，副词，修饰形容词时要后置，故第二空应是patient enough。 9．I’m sure he can run ________ to win first prize. A．enough fast B．fast enough C．too fast D．so fast 【答案】B 【详解】句意：我确信他能够跑得足够快来赢得一等奖。 enough修饰形容词或副词时，要放在形容词或副词的后面，“fast”是副词，表示“快地”，所以“足够快”应该是“fast enough” 。而“too fast”表示“太快”，“so fast”表示“如此快”，均不符合句子要表达的“能赢得一等奖，即速度足够快”这一语境。应填fast enough。 10．Tao Yuanming’s simple and direct writing style was different from that of his time. He was ________ the rules. A．too brave to break B．too brave to follow C．brave enough to follow D．brave enough to break 【答案】D 【详解】句意：陶渊明朴素直接的写作风格与他那个时代的风格不同。他足够勇敢去打破规则。 too brave to break太勇敢以至于不能打破规则；too brave to follow太勇敢以至于不能遵守规则；brave enough to follow足够勇敢去遵守规则；brave enough to break足够勇敢去打破规则。根据“was different from that of his time”可知他的风格与众不同，推断他是打破规则，排除遵守规则的选项；too…to…表示“太……而不能……”，brave enough to…表示“足够勇敢去……”，应填brave enough to break。 11．People are ______ polite ______ jump the line. A．enough; to B．too; to C．very; to D．so; that 【答案】B 【详解】句意：人们太有礼貌了，以至于不会插队。 enough...to足够……能做某事；too... to...太……而不能……，to后跟动词原形；very非常；so... that...如此……以至于……，that后接从句。根据语境可知，有礼貌的人不会插队，表示否定含义，且jump为动词原形，符合too... to...结构。 12．The room was ________ noisy ________ I couldn’t hear anything. A．too; that B．so; that C．such; that D．enough; to 【答案】B 【详解】句意：这个房间太吵了，以至于我什么都听不见。 “too; that”本身不存在该搭配，排除；“so…that…”意为“如此……以至于……”，结构为“so +形容词/副词+ that从句”，that引导结果状语从句，本题中noisy是形容词，后半句为结果状语从句，符合；“such…that…”同样表示“如此……以至于……”，但结构为“such +(a/an+形容词)+名词+ that从句”，空格后为形容词，排除；“enough…to…”中to是不定式符号，后需接动词原形，不能接从句。 13．—I can’t finish the work in such a short time.   —Don’t worry. You are ________ to ask for help. A．too brave B．brave enough C．enough brave D．so brave 【答案】B 【详解】句意：——我无法在这么短的时间内完成这项工作。——别担心。你足够勇敢，可以寻求帮助。 too brave太勇敢；brave enough足够勇敢；enough brave错误结构；so brave如此勇敢。根据前句“Don’t worry”及后句“to ask for help”可知，表示“足够勇敢”去做某事，应用brave enough，enough修饰形容词后置。 14．—Why do you recommend Sandy to be a volunteer for the meeting? —She is ________ to notice small changes around her and ready to give help in need. A．too careful B．careless enough C．careful enough D．too careless 【答案】C 【详解】句意：——你为什么推荐桑迪做这次会议的志愿者？——她足够细心，能注意到身边细微的变化，并且愿意在有需要时提供帮助。 careful细心的；careless粗心的。too…to…意为“太……而不能……”，表示否定含义；enough to do意为“足够……去做某事”，表示肯定含义。根据“Why do you recommend Sandy to be a volunteer for the meeting?”可知，推荐她做志愿者，是因为她细心且能留意细节，应填careful enough。 15．—Do you want to keep goldfish? —No, it is ________difficult ________take care of them. A．so; that B．not; enough to C．too; to D．such; that 【答案】C 【详解】句意：——你想养金鱼吗？——不，养它们太难了。 so…that…意为“如此……以至于……”，so后接形容词或副词，that后接从句；not…enough to…意为“不足以……”，其中enough前常加形容词或副词，to后接动词原形；too…to…意为“太……而不能……”，其中too后接形容词或副词，to后接动词原形；such…that…意为“如此……以至于……”，such后接名词，that后接从句。根据“difficult”是形容词，“take care of them”是动词短语，可知此处应用“too…to…”结构，表示“养它们太难了”。 16．The workers are too busy ________. They have to keep working till they finish it. A．having a rest B．not to have a rest C．to have a rest D．that they have a rest 【答案】C 【详解】句意：工人们太忙了而不能休息。他们不得不一直工作直到完成任务。 too...to...为固定搭配，意为“太……而不能……”，后接动词原形。A 项为动名词形式，B 项多出否定词not，D 项为从句结构，均不符合该搭配；C 项为动词不定式，符合语法结构且句意通顺。故填to have a rest。 17．The baby tiger is ________ to catch any animals alone. She is just days old now. A．young enough B．old enough C．too old D．too young 【答案】D 【详解】句意：这只小老虎太小了，还不能独自捕猎。她现在才出生几天。 考查“too...to...”结构。young enough足够年轻；old enough足够老；too old太老；too young太年轻。根据后句“She is just days old now.”可知，小老虎年龄太小，无法独自捕猎，应使用“too...to...”结构表示“太……而不能……”。故选D。 18．He is ________ tired ________ walk any further. A．too; to B．so; that C．enough; to D．very; to 【答案】A 【详解】句意：他太累了，不能再走更远了。 考查固定句型。too…to…太……而不能……，to后接动词原形；so…that…如此……以至于……，that后接完整的句子；enough…to…足够……去……，to后接动词原形；very…to…不是固定搭配。根据“walk any further”，表示“不能再走更远”，符合“太累而不能走”的逻辑。故选A。 19．— Let me have a rest first. I’m ________ to walk any further. — Come on! We only have five kilometers left. A．weak enough B．too weak C．quite weak D．so weak 【答案】B 【详解】句意：——让我先休息一下。我太虚弱了，走不动了。——加油！我们只剩下五公里了。 考查“too...to...”结构。weak enough足够虚弱；too weak太虚弱；quite weak相当虚弱；so weak如此虚弱。根据“Let me have a rest first. I’m...to walk any further”可知，此处应使用“too weak to walk”表示“太虚弱以至于不能走”。故选B。 20．—Can you understand me, Tony? —Yes, madam. You speak ______. I can follow you. A．clear enough B．enough clear C．clearly enough D．enough clearly 【答案】C 【详解】句意：——Tony，你能听懂我说的话吗？——是的，女士，你说得足够清楚，我能跟上你。 考查副词辨析及enough的用法。clear清楚的，形容词；clearly清晰地，副词。修饰动词speak应该使用副词clearly，排除A和B；enough修饰副词时需放在副词之后，排除D，clearly enough符合句意。 二、完成句子(本大题共10小题，每小题4分，共40分) 21．There are too many rules, so visitors cannot remember them all at once. (同义句转换) There are _________ _________ _________ for visitors _________ _________ them all at once. 【答案】 too many rules to remember 【详解】句意：规则太多了，所以游客没办法一下子全部记住。此处可表述为“对游客来说，规则太多了，而不能一下子全部记住”，“too…to…”表示“太……而不能……”，故填too；many；rules；to；remember。 22．She was very honest and kept the lost wallet for its owner. （改为enough to…结构） She was _________ _________ _________ _________ the lost wallet for its owner. 【答案】 honest enough to keep 【详解】句意：她非常诚实，为失主保管丢失的钱包。原句用并列句表达“足够诚实从而做某事”的含义，改写时可使用固定结构“adj.+enough to do sth.”来替换,表示“足够……去做某事”。原句中的“very honest”对应“honest enough”，“and kept”对应 “to keep”，因此填入honest enough to keep。 23．The girl is very young. She can’t dress herself.   The girl isn’t ________ ________ to dress herself. 【答案】 old enough 【详解】句意：这个女孩年龄很小。她不会自己穿衣服。根据“isn’t”可知，此处应用“not + 反义形容词 + enough to do sth”结构，原句“年龄太小，不会自己穿衣服”转换后就是“年龄不够大，不会自己穿衣服”，young的反义词为old。 24．我们有足够的时间来完成这项工作。 We have _______________ the work. 【答案】enough time to finish 【详解】原句中“足够的时间”是关键词，英文表达为“enough time”；关键词“来完成”表示目的，在英文中常用不定式“to do”结构来表达，所以“完成”用“finish”的不定式形式“to finish”。故填enough time to finish。 25．那位老妇人太老了，不能清楚地表达自己。 The old woman is _________________ herself clearly. 【答案】too old to express 【详解】原句中“太老了而不能表达”是关键词，“too+形容词/副词+ to do sth.”，表示“太……而不能……”。 原句含义是“太老而不能表达自己”，形容词用old（老的），“表达”用动词express，因此填入too old to express。 26．基蒂忙于和其他人交流以至于没听收音机。 Kitty was ______________ with others ______________ the radio. 【答案】 so busy talking/ too busy talking that she didn’t listen to/to listen to 【详解】原句中“忙于交流”和“没听”是关键词，表示“如此忙于做某事”的英文是so busy doing sth.或too busy to do sth.。第一空可用so busy talking或too busy talking；第二空用that she didn’t listen to引导结果状语从句，或用to listen to表示结果。 27．我们年纪足够大了，该学习如何在公共场合表现得有礼貌了。 We are old enough _______________________. 【答案】to learn how to behave politely in public 【详解】原句中“该学习如何在公共场合表现得有礼貌了”是关键词，表示“足够大去做某事”的英文是old enough to do sth.；表示“学习如何表现得有礼貌”的英文是learn how to behave politely；表示“在公共场合”的英文是in public。 28．The water is so dirty. We can’t drink it. (同义句转换) a. The water is ________ dirty ________ drink. b. The water isn’t ________ drink. 【答案】 too to clean enough to 【详解】句意：水太脏了，我们不能喝。第一句是“too+形容词+to+动词原形”的固定结构，意为“太……而不能……”，和原句“so...that...”表达的否定含义一致，因此填too和to。第二句是“not+形容词+enough+to+动词原形”的结构，意为“不够……去做某事”，和原句意思相同，此处“isn’t clean enough to drink”即“不够干净，不能喝”，符合语境。故填too；to；clean enough to。 29．Tom is very clever and often gets good marks in his exams.（同义句转换） a. Tom is ________ good marks in his exams. b. Tom is ________ he often gets good marks in his exams. 【答案】 clever enough to get so clever that 【详解】句意：汤姆很聪明，经常在考试中取得好成绩。 a. 需要将原句“Tom is very clever and often gets good marks in his exams.”转换为“Tom is...good marks in his exams.”的结构。原句意思可以理解为“汤姆足够聪明，可以在考试中取得好成绩”。因此，此处应用“adj.+enough+to do sth.”的结构来表示“足够……以至于可以做某事”。形容词“clever”后接“enough to get”。故填clever enough to get。 b. 需要将原句转换为“Tom is...he often gets good marks in his exams.”的结构。此处是使用一个复合句来表达原因和结果。应用“so+adj.+that+从句”的结构，表示“如此……以至于……”。形容词“clever”前加“so”，后接“that”引导结果状语从句。故填so clever that。 30．The child isn’t very patient, so he can’t wait for his turn quietly. The child isn’t _________ _________ _________ _________ for his turn quietly. 【答案】 patient enough to wait 【详解】句意：这孩子不是很有耐心，所以他不能安静地等待轮到他。分析句子可知，进行同义句转化，可以用enough来替换very修饰形容词patient并后置，enough…to do sth“足够…做某事”，固定搭配，wait“等待”，用不定式to wait作结果状语。 三、短文填空(本大题共10小题，每小题2分，共20分) 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的单词或括号中词语的正确形式填空。 Have you ever heard of “National Smiling Month”? It 31 (start) on the 14th of May in 1977 in the UK. During this month, people have to think about the 32 (important) of brushing their teeth, eating 33 (little) sweet food and going to see the dentist from time to time. The British are famous 34 their bad teeth. Even a dictionary has 35 expression “British Smile”, meaning “Any smile with bad teeth”. 36 , in America, the “Hollywood Smile” gets its name because American movie stars often smile so 37 (loud) to show off their beautiful teeth. But what about 38 (smile) in the UK? Do the British smile a lot, or do they look sad all the time? It’s said that British don’t often show 39 (they) feelings. But actually it all depends on the situation. For example, Britain doesn’t allow smiling passport (护照) photos. But if you are at a party, you 40 (find) everyone smiling happily. So the British smile as much as anyone else. 【答案】 31．started 32．importance 33．less 34．for 35．the 36．However 37．loudly 38．smiling 39．their 40．will find 【导语】本文介绍了英国“全国微笑月”的由来，对比英美对牙齿与微笑的不同态度，讲解英国人微笑习惯的真实特点。 31．句意：它于1977年5月14日起源于英国。时间为过去的1977年，句子需要使用一般过去时，start的过去式为started。 32．句意：在这个月里，人们必须意识到刷牙、少吃甜食以及定期看牙医的重要性。 定冠词the和介词of之间需要填名词，形容词important要变为名词形式importance。 33．句意：在这个月里，人们必须意识到刷牙、少吃甜食以及定期看牙医的重要性。 此处表达“更少的甜食”，暗含和日常摄入量对比的含义，需要使用little的比较级less。 34．句意：英国人因牙齿不好而出名。 固定搭配be famous for意为“因……而出名”。 35．句意：甚至词典里有这个短语“英式微笑”，意思是“带着坏牙的微笑”。此处特指后面的固定表达“British Smile”，用定冠词the。 36．句意：然而在美国，“好莱坞微笑”得名是因为美国电影明星经常大声地笑，来展示自己漂亮的牙齿。 前文讲英国的牙齿情况，后文转而介绍美国的不同情况，此处表转折，且空格后面有逗号，用however“然而”，位于句首首字母大写。 37．句意：然而在美国，“好莱坞微笑”得名是因为美国电影明星经常大声地笑，来展示自己漂亮的牙齿。修饰动词smile需要使用副词，loud的副词形式为loudly。 38．句意：那英国人的微笑又是怎样的呢？固定搭配what about doing sth.，动词需要变为动名词形式，故填smiling。 39．句意：据说英国人很少表露他们的情绪。修饰名词feelings需要使用形容词性物主代词，they变为their。 40．句意：但是如果你在一场派对上，你会发现每个人都笑得很开心。条件状语从句遵循主将从现规则，从句用一般现在时，主句要用一般将来时，故填will find。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ 班级 姓名 学号 分数 Unit 5 Good Manners too...to...和enough...to...的用法 （时间：60分钟，满分：100分） 一、单项选择(本大题共20小题，每小题2分，共40分) 1．The girl is ________ to go to school. A．enough old B．old enough C．too old D．so old 2．This math problem is not easy ________ for the new students ________ out in such a short time. A．enough; work B．too; to work C．so; working D．enough; to work 3．Please wait patiently ______ to let everyone get their turn. A．enough B．too C．very D．so 4．It’s not _________ fix the problem, although time is clearly getting short. A．late enough B．early enough C．too late to D．too early to 5．The new rule about school manners is _________ understand. Even the new students can follow it easily. A．too clear to B．clear enough to C．too difficult to D．difficult enough 6．The little girl was _________ understand why we shouldn’t talk with food in our mouths until her mom explained it patiently again and again. A．so young that B．too young to C．young enough to D．young enough that 7．In many countries, people are _________ follow others instead of pushing past them when walking on crowded streets. A．too polite to B．so polite that C．polite enough to D．polite enough that 8．Jenny works ________ a kindergarten teacher, and she is ________ to stay with naughty kids all day long. A．for, patient enough B．for; enough patient C．as; patient enough D．as; enough patient 9．I’m sure he can run ________ to win first prize. A．enough fast B．fast enough C．too fast D．so fast 10．Tao Yuanming’s simple and direct writing style was different from that of his time. He was ________ the rules. A．too brave to break B．too brave to follow C．brave enough to follow D．brave enough to break 11．People are ______ polite ______ jump the line. A．enough; to B．too; to C．very; to D．so; that 12．The room was ________ noisy ________ I couldn’t hear anything. A．too; that B．so; that C．such; that D．enough; to 13．—I can’t finish the work in such a short time.   —Don’t worry. You are ________ to ask for help. A．too brave B．brave enough C．enough brave D．so brave 14．—Why do you recommend Sandy to be a volunteer for the meeting? —She is ________ to notice small changes around her and ready to give help in need. A．too careful B．careless enough C．careful enough D．too careless 15．—Do you want to keep goldfish? —No, it is ________difficult ________take care of them. A．so; that B．not; enough to C．too; to D．such; that 16．The workers are too busy ________. They have to keep working till they finish it. A．having a rest B．not to have a rest C．to have a rest D．that they have a rest 17．The baby tiger is ________ to catch any animals alone. She is just days old now. A．young enough B．old enough C．too old D．too young 18．He is ________ tired ________ walk any further. A．too; to B．so; that C．enough; to D．very; to 19．— Let me have a rest first. I’m ________ to walk any further. — Come on! We only have five kilometers left. A．weak enough B．too weak C．quite weak D．so weak 20．—Can you understand me, Tony? —Yes, madam. You speak ______. I can follow you. A．clear enough B．enough clear C．clearly enough D．enough clearly 二、完成句子(本大题共10小题，每小题4分，共40分) 21．There are too many rules, so visitors cannot remember them all at once. (同义句转换) There are _________ _________ _________ for visitors _________ _________ them all at once. 22．She was very honest and kept the lost wallet for its owner. （改为enough to…结构） She was _________ _________ _________ _________ the lost wallet for its owner. 23．The girl is very young. She can’t dress herself.   The girl isn’t ________ ________ to dress herself. 24．我们有足够的时间来完成这项工作。 We have _______________ the work. 25．那位老妇人太老了，不能清楚地表达自己。 The old woman is _________________ herself clearly. 26．基蒂忙于和其他人交流以至于没听收音机。 Kitty was ______________ with others ______________ the radio. 27．我们年纪足够大了，该学习如何在公共场合表现得有礼貌了。 We are old enough _______________________. 28．The water is so dirty. We can’t drink it. (同义句转换) a. The water is ________ dirty ________ drink. b. The water isn’t ________ drink. 29．Tom is very clever and often gets good marks in his exams.（同义句转换） a. Tom is ________ good marks in his exams. b. Tom is ________ he often gets good marks in his exams. 30．The child isn’t very patient, so he can’t wait for his turn quietly. The child isn’t _________ _________ _________ _________ for his turn quietly. 三、短文填空(本大题共10小题，每小题2分，共20分) 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的单词或括号中词语的正确形式填空。 Have you ever heard of “National Smiling Month”? It 31 (start) on the 14th of May in 1977 in the UK. During this month, people have to think about the 32 (important) of brushing their teeth, eating 33 (little) sweet food and going to see the dentist from time to time. The British are famous 34 their bad teeth. Even a dictionary has 35 expression “British Smile”, meaning “Any smile with bad teeth”. 36 , in America, the “Hollywood Smile” gets its name because American movie stars often smile so 37 (loud) to show off their beautiful teeth. But what about 38 (smile) in the UK? Do the British smile a lot, or do they look sad all the time? It’s said that British don’t often show 39 (they) feelings. But actually it all depends on the situation. For example, Britain doesn’t allow smiling passport (护照) photos. But if you are at a party, you 40 (find) everyone smiling happily. So the British smile as much as anyone else. 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $