当前位置：文档视界 › 高中英语语法易错题型动词语法陷阱题(含答案解析)

高中英语语法易错题型动词语法陷阱题(含答案解析)

(完整版)高中英语语法动词不定式和动名词做宾语

巧记跟不定式和动名词做宾语的动词用法语法体现语言的规律,学好英语离不开语法学习。其中，动词的用法是重点，也是难点。对于谓语动词和非谓语动词的用法，学生普遍感到困难。学生感到50多个动词，用法难以掌握，但调整了单词的排列顺序，根据汉意编写顺口溜会方便记忆：（一）跟不定时作宾语的动词有：打算(intend)计划(plan)和期盼(expect/desire) 假装(pretend)喜欢(would like/love/prefer)表祝愿(wish) 决定(decide)同意(agree)来帮助(help) 设法(manage)说服(persuade)不拒绝(refuse) 好像(seem/appear)答应(promise)做努力(attempt) 选择(choose)询问(ask)多学习(learn) 告诉(tell)失败(fail)也付得起(afford) 不定式宾语要牢记！（二）跟动名词作宾语的动词有：考虑（consider）完成（finish）多练习（practise）避免（avoid）冒险（risk）求建议（suggest/recoomend）面对（face）喜欢（enjoy/appreciate）和介意(mind) 允许（allow）承认（admit/permit）或放弃(give up/abandon) 推迟（put off/delay/postphone）逃避（escape）不原谅（excuse/pardon）提及（mention）坚持(keep/insist on）要想象（imagine/fancy）还有词组feel like 和can’t stand！瞧！，我们就这样快快乐乐地记住了吧！（三）在动词remember, try, regret, forget, need/want/require， stop, mean等后跟动名词V-和不定式意义不同，巧记一句话（记住努力；后悔忘记；需要停止；很有意义），学习采用对比法： remember to do something记着去做某事（现在还没有做） remember doing something记着曾做过某事（以前做过某事） try to do something努力、尽力做某事 try doing something试着做某事（看能否达到预期的结果） stop to do something开始做某事（停下正在做的事，开始做另一事） stop doing something停止做某事（停止正在做的事） regret to do something对将来做的事感到遗憾、惋惜 regret doing something对已经做过的事感到后悔

高中英语语法讲义——名词

高中英语语法讲义——名词名词的数单数名词变复数名词的常用法则（1）一般情况直接加-s, 如：books, trees. （2）以-s, -x, -ch, -sh结尾的加-es, 如：glasses, boxes, watches, brushes. （3）以辅音字母加-y结尾的名词把-y改为-i再加-es. 如：stories, countries. （4）以-o结尾的常在词尾加-s，但中学英语中下列名词要加-es, 它们是：黑人英雄．．中吃土豆．．、西．．．．．在回声红柿．．，即Negroes, heroes, echoes, potatoes, tomatoes. 下列以-o结尾的名词既可加-es, 也可加-s,它们是：zeros (zeroes)零, mosquitos (mosquitoes)蚊子, volcanos (volcanoes) 火山。（5）以-f或-fe结尾的名词变为复数时一般直接加-s，但下列名词需把f或fe去掉，加-ves，它们是：为了自己．．和一片树叶．．上，把狼．劈成了两半．，即：selves, lives, ．．．．站在架子．．手里拿着刀子．．和他的妻子．．活命．，小偷 thieves, wives, knives, loaves, leaves, shelves, wolves, halves. 但下列以-f结尾的名词既可变f为v后加-es，也可直接在f后加-s，它们是：handkerchiefs (handkerchieves)手帕，scarfs (scarves)围巾。（6）合成名词变复数时，通常只将里面所含的主体名词变为复数，如果没有主体名词，则将最后一部分变为复数。如sons-in-law女婿；passers-by过路人；storytellers讲故事的人；housewives家庭主妇。（7）“man/ woman+ n.”变复数时，作定语的man/ woman和中心词都要变复数。 men teachers男老师women engineers女工程师（8）不规则复数形式 ①变内部元音 foot-feet man-men woman-women tooth-teeth mouse-mice goose-geese gentleman-gentlemen ②单复数同形的名词 sheep deer spacecraft太空船 aircraft飞行器Chinese Japanese

高中英语语法(时态和语态)

高中英语语法(时态和语态) 一．动词的时态时态是谓语动词所表示的动作或情况发生时间的各种形式。英语动词有16种时态，但是常见的只有九种：一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、现在完成时、过去完成时、过去将来时、现在完成进行时。 (一）一般现在时（do / does） 1．具体用法 1) 表示经常性或习惯性动作 We always care for each other and help each other. 我们总是互相关心互相帮助。 He goes to school every day. 2)表示现在的特征或状态 He is very happy. Do you sing? ----A little. 3)表示普遍真理 Light travels faster than sound. 光速比声速快。 Actions speak louder than words. 行动胜过言语。 * 常与一般现在时态连用的词或短语主要有：often, usually, sometimes, every day, every morning/afternoon, on Sundays/weekends等等。 I often go to the cinema on Sundays. 我经常星期天去看电影。 He goes to work early every day. 他每天上班很早。（二）一般过去时( did ) （1）表示过去某一特定时间所发生的、可完成的动作或状态，常与表示确切过去时间的词、短语或从句连用。例如： We went to the pictures last night and saw a very interesting film. （2）表示过去习惯性动作。例如： He always went to class last. I used to do my homework in the library. （三）一般将来时( will / shall do) 1）表示将来打算进行或期待发生的动作或状态。例如： I shall graduate next year. 2）一般将来时有时可以表示一种倾向或习惯性动作。如 Crops will die without water. You won’t succeed with out their support. 3) 几种替代形式： *be going to +v在口语中广泛使用，表示准备做或将发生的事情。例如： I'm going to buy a house when we've saved enough money. *be to +v表示计划安排要做的事，具有"必要"的强制性意义。例如： I am to play tennis this afternoon. *be about to +v表示即将发生的事情。例如： He was about to start. *be due to +v表示预先确定了的事，必定发生的事。例如： The train is due to depart in ten minutes. 5）少数动词如：begin, come, leave, go, arrive, start, stop, return, open, close等的一般现在时可用来表示将来的动作。（多用来表示按计划事先安排好即将发生的动作，句中通常还有一个表示将来的时间状语）。例如： The meeting begins at seven.

高中英语语法填空专题训练和答案

Before the 17th century, most of the native English speakers lived in England. After the 17th century, British people began to move to other ___66___ (country). Gradually, English was spoken there. At present ___67___ (many) people speak English as their first, second or a foreign language than ever before. ___68___ (luck), native English speakers can understand each other even if they don't speak the same kind of English. English ___69___ (change) and developed when cultures met and communicated with each other over the past centuries. The English ___70___ (speak) in England between about AD450 and 1150 was very different ___71___ the modern English we speak today. It was the new settlers that enriched the English language and ___72___ (especial) its vocabulary. The English language was settled by the 19th century ___73___ two big changes in English spelling happened. English now is also spoken as a foreign ___74___second language in South Asia. China may have the ___75___ (large) number of English learners. 66.countries 【答案】countryother修饰用复数形式，指其他的国家。故是可数名词，此处由【解析】考查名词。countries. 填67. more 【答案】than ever before可知含有和以前比较的意思，要用比较级考查比较级。根据句中的【解析】more. 表示更多的人，故填68. Luckily 【答案】“”Luckily. ，故填【解析】考查副词。此处单独使用作状语要用副词形式，指幸运的是69. has changed 【答案】over the past centuries可知与现在完成时连用，主【解析】考查时态。根据句意和时间状语has changed. 语是单数，故填70. spoken 【答案】Englishspeak是被动关系，此处是过去分词作定语，故填和动词【解析】考查过去分词。． spoken. 71. from 【答案】be different from“…”from. ，是固定短语。故填和【解析】考查固定短语。不同72. especially 【答案】especial“”especially“”。特殊的，特别的是副词是形容词；尤其，特别【解析】考查副词。“”especially. ，故填尤其，特别此处指新的定居者丰富了英语，尤其是它的词汇。表示73. when 【答案】“…”，从句时态是过去时，故填当【解析】考查连词。此处引导时间状语从句，表示时候when. 74. or 【答案】or. 【解析】考查连词。此处表示选择，指作为第一语言或第二语言被说，故填 75. largest 【答案】【解析】考查形容词最高级。因为中国人口最多所以说英语的人也最多，此处由the修饰用 I had just visited my best friend in hospital with my mum,___41___hadn't seen my friend since she'd gone into hospital six months earlier. I knew where she was coming from as she was___42___(grave)ill, but as I'd been visiting her every week I had stopped seeing the obvious; my friend___43___(lose)most of her body weight

高中英语语法(6)-动词的ing形式

第6章动词的-ing形式动词的-ing形式包括传统语法的“动名词”（gerund）和“现在分词”（present participle）两个部分。动词的-ing形式具有动词的特征，同时又具有名词、形容词和副词的特征，因此它可以在句中作主语、表语、定语、宾语、宾语补足语和状语。一、动词-ing形式的特征和种类与动词不定式一样，动词的-ing形式也具有动词的特征，有时态和语态的变化，并可带状语、宾语等。 A.动词-ing形式的一般式 1. 动词-ing形式的一般式可用来泛指一个动作，没有特别的时间意义。Swimming is her favorite sport. 游泳是她最喜欢的体育运动。 Learning is important to modern life. 学习对现代生活很重要。 2. 动词-ing形式的一般式可用来表示和谓语动词同时发生的动作。 They went out of the classroom, talking and laughing. 他们有说有笑地走出教室。 She listened carefully to her neighbours speaking. 她倾听她邻居的讲话。 3. 动词-ing形式的一般式有时也可表示在谓语动词的动作之前或之后发生的动作。 I remembered sending him an e-mail last week. 我记得上星期给他发过一份电

子邮件。 He suggested taking my daughter to the zoo the next Sunday. 他建议下个星期天带我女儿去动物园。 B. 动词-ing形式的完成式动词的-ing形式的完成式表示一个已完成的动作，这个动作发生或完成在谓语动词表示的动作之前。 Having lived in this city for three years, she knows it very well. 在这个城市生活了3年，她对这里已很熟悉。 I really regretted having missed such an exciting lecture. 错过了这么振奋人心的演讲，我真的很遗憾。注意：在现代英语中，作宾语的-ing形式的完成式可用一般式来代替。 I really regretted missing such an exciting lecture. 错过了这么振奋人心的演讲，我真的很遗憾。(=I really regretted having missed such an exciting lecture.) We remembered seeing the film. 我们记得看过这部电影。(=We remembered having seen the film. ) C. 动词-ing形式的被动形式动词的-ing形式的被动形式表示它的逻辑主语是-ing形式表示的动作的承受者。 1．一般式的被动形式 The question being discussed is very important. 正在讨论的问题很重要。

高中英语新高考语法基础版一轮复习讲义(9)被动语态知识点整理总结(含练习与解析)

2021届高中英语新高考语法基础版一轮复习讲义（9）被动语态知识点整理总结被动语态是中高考经常考的语法之一，也是日常口语和写作中必不可少的句子形式，今天笔者就带大家一起来学习它。 01 被动语态的概念所谓被动语态是相当于主动语态而言的。如果主语是动作的执行者，那么我们就称其为主动语态，反之，如果主语是动作的承受者或动作的对象，那我们就称其为被动语态。如：主: Many people speak Chinese. 被: Chinese is spoken by many people. 02 被动语态的结构被动语态由"be＋及物动词的过去分词"构成。人称、数和时态的变化是通过be的变化表现出来。下面通过speak来说明常见时态的被动语态：一般现在时 am/is/are＋spoken 一般过去时 was/were＋spoken

一般将来时 will/shall be＋spoken 现在进行时 am/is/are being＋spoken 过去进行时 was/were being＋spoken 现在完成时 have/has been＋spoken 过去完成时 had been + spoken 03 被动语态的执行者被动语态的执行者一般以by+人/物来引出。如果没有执行者或没必要说出执行者，则可以省略这部分。如： Some computers were stolen last night. 无法确定执行者，因此无by结构。 The glass was broken by Mike.

执行者是Mike，所以这里用by引出。 04 含有情态动词的被动语态用“情态动词＋be＋过去分词”结构。如： We can repair this watch in two days. This watch can be repaired in two days. 05 特殊情况主动变被动 make/let+sb+do变为被动要还原to。如： He made the boy work for two hours a day. The boy was made to work for two hours a day. 双宾语结构的物做被动语态主语时，后面要还原出介词。如：Jack gave Peter a present just now. A present was given to Peter just now. 巩固练习 1. The flowers were so lovely that they ______ in no time. A. sold B. had been sold

高考英语语法专题复习动词时态和语态

高考英语语法专题复习动词时态和语态 Document number：PBGCG-0857-BTDO-0089-PTT1998

高考英语语法复习专题：动词时态和语态一、考点聚焦 1、动词时态考查要点简述（1）一般现在时考点分析 ①表示客观事实或普通真理（不受时态限制） The geography teacher told us the earth moves around the sun. Water boils at 100o C. ②表示现状、性质、状态时多用系动词或状态动词；表示经常或习惯性的动作，多用动作动词，且常与表频率的时间状语连用。 Ice feels cold. We always care for each other and help each other. ③表示知觉、态度、感情、某种抽象的关系或概念的词常用一般现在时：see、hear、smell、taste、feel、notice、agree、believe、like、hate、want、think、belong seem等。如： I know what you mean. Smith owns a car and a house. All the students here belong to Middle School. ④在时间、条件状语从句中常用一般现在时代替将来时。但要注意由if 引导的条件状语从句中可以用shall或will表“意愿”，但不表示时态。 If you will accept my invitation and come to our party, my family will be pleased.如果你愿意接受并参加我们的舞会，我的家人会非常高兴。 ⑤少数用于表示起止的动词如come、go、leave、arrive、fly、return、start、begin、pen、close、end、stop等常用一般现在时代替将来时，表示一个按规定、计划或安排要发生的动作。当be表示根据时间或事先安排，肯定会出现的状态，只用一般现在时。 The shop closes at 11:00 . every day. Tomorrow is Wednesday.

【英语】高中英语语法填空试题(有答案和解析)及解析

【英语】高中英语语法填空试题(有答案和解析)及解析一、高中英语语法填空 1．阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Since 1949 when the People's Republic of China ________(establish), and especially since 1978, China's transformation from a traditional ________（agriculture）society to a modern industrial society has been greatly accelarated by a rapid industrial restructuring. China's industrial structure developed according to the objective of industrialization, ________ aimed at the proportion(比例)of agriculture declining ceaselessly, and the proportion of the industrial and service sector increasing continually. ________(current), the industrial goods produced in China all range from capital goods to consumption goods. China's factory outputs extend from textiles (纺织业) to railway, planes and computers. China is the largest producer of inexpensive cotton textiles in the world and exports large ________(quantity) of textiles and clothes. Food processing is very important, and much farm produce is exported. Other industrial products ________(include)television sets, bicycles, cars, trucks and washing machines are expanding in the world. China has become ________ industrialized country to some extent. The auto and the housing industry, in the process of industrialization have developed by leaps and bounds. The most important export products are machinery and electric equipment,________ the most important import products are raw materials. In recent years, China's industry________(compete) internationally, and as a result, the ________(develop)of the country's industry is increasingly influenced by international economic environments. 【答案】was established；agricultural；which；Currently；quantities；including；an；while/and；has competed has been competing；development 【解析】【分析】本文是一篇说明文，自1978年以来，中国从传统农业社会向现代工业社会的转型，在产业结构调整的快速推进下，取得了长足的进步。中国在一定程度上已经成为一个发达的工业化国家。（1）考查时态语态。根据Since 1949可知应用一般过去时，且主语the People's Republic of China与谓语动词establish构成被动语态，用一般过去时的被动语态，故填was established。（2）考查形容词。society为名词，需要形容词修饰，故填agricultural。（3）考查定语从句。句意：中国的产业结构是按照工业化的目标发展的，其目标是农业比重不断下降。本句为定语从句修饰先行词the objective of industrialization，且先行词在从句中做主语，指物，故用关系代词which，填which 。（4）考查副词。句意：目前，中国生产的工业产品从资本品到消费品应有尽有。修饰整个句子应用副词，故填Currently。（5）考查名词。large quantities of固定短语，“大量……”，故填quantities。（6）考查非谓语动词。句意：包括电视机、自行车、汽车、卡车和洗衣机在内的其他工业产品正在世界范围内扩张。本句已经存在谓语动词且句中没有连词，故include只能做非谓语，表示“包括；包含”后跟包含的内容时需用现在分词，故填including。

高中英语语法总结大全之情态动词

高中英语语法总结大全之情态动词情态动词的语法特征 1）情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。 2）情态动词除ought 和have 外，后面只能接不带to 的不定式。 3）情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。 4）情态动词没有非谓语形式，即没有不定式，分词，等形式。比较can 和be able to 1）can，could 表示能力；可能(过去时用could), 只用于现在式和过去式(could)。be able to可以用于各种时态。 They will be able to tell you the news soon. 他很快就能告诉你消息了。 2）只用be able to a. 位于助动词后。 b. 情态动词后。 c. 表示过去某时刻动作时。 d. 用于句首表示条件。 e. 表示成功地做了某事时，只能用was/were able to，不能用could。 He was able to flee Europe before the war broke out. = He managed to flee Europe before the war broke out. 注意：could不表示时态 1）提出委婉的请求，（注意在回答中不可用could）。 --- Could I have the television on? --- Y es, you can. / No, you can't. 2）在否定，疑问句中表示推测或怀疑。 He couldn't be a bad man. 他不大可能是坏人。比较may和might 1）表示允许或请求；表示没有把握的推测；may 放在句首，表示祝愿。 May God bless you!

高中英语语法总结大全-动词

高中英语语法总结大全之动词动词 1）表示动作中状态的词叫做动词。 2）根据其在句中的功能，动词可分为四类，分别是：实义动词（Notional Verb）、系动词（Link Verb）、助动词（Auxiliary Verb）、情态动词（Modal Verb）。说明：有些情况下，有些动词是兼类词，例如： We are having a meeting.我们正在开会。（having是实义动词。） He has gone to New York.他已去纽约。（has是助动词。） 3）动词根据其后是否带有宾语，可分为两类，分别是：及物动词（Transitive Verb）、不及物动词（Intransitive Verb），缩写形式分别为vt. 和vi.。说明：同一动词有时可用作及物动词，有时可用作不及物动词。例如： She can dance and sing. 她能唱歌又能跳舞。（sing在此用作不及物动词。） She can sing many English songs. 她能唱好多首英文歌曲。（sing用作及物动词。） 4）根据是否受主语的人称和数的限制，可分两类，分别是：限定动词（Finite Verb）、非限定动词（Non-finite Verb）例如： She sings very well. 她唱得很好。（sing受主语she的限制，故用第三人称单数形式sings。） She wants to learn English well. 她想学好英语。（to learn不受主语she的限制，没有词形变化，是非限定动词。说明：英语中共有三种非限定动词，分别是：动词不定式（Infinitive）、动名词（Gerund）、分词（Participle）。 5)根据动词的组成形式，可分为三类，分别是：单字词（One-Word Verb）、短语动词（Phrasal Verb）、动词短语（Verbal Phrase）例如： The English language contains many phrasal verbs and verbal phrases. 英语里有许多短语动词和动词短语。（contains是单字动词。）

高考英语语法复习讲义：语法总结全集

语法总结全集名词和主谓一致一、名词的分类英语中名词主要可以分为可数名词和不可数名词。 1．可数名词可数名词一般都有单复数。单数时，名词前可加不定冠词a/an；复数时，前面可加数词，名词本身要改成复数形式。可数名词的复数有规则和不规则两种变化。规则的名词，只要在单数名词之后加“s”，“es”或去“y”加“ies”就行，如：an umbrella, twelve umbrellas；a factory, three factories。不规则的名词变化则要靠积累记忆，如：a mouse, ten mice；a policeman, six policemen。有少数可数名词，如sheep，works（工厂），Chinese等，它们的单复数同形：a sheep, four sheep；a chemical works, five chemical works。此外，还有一些可数名词只有复数形式，如clothes，trousers，cattle，police，people(人，人民)等。英语名词中还有一些合成词，它们的复数形式有三种可能：1）后面的部分变成复数形式：grown-ups，boy students，grandchildren。2）前面的部分变成复数形式：passers-by，lookers-on，sons-in-law。3）前、后都变成复数形式：men doctors，women drivers。 2．不可数名词不可数名词没有单复数的变化，前面也不能加a/an，或数词。但是我们可以用量词来表示不可数名词的数量，单复数表现在量词上，如：a piece of paper；two pieces of paper。在有些情况下，不可数名词也可用a/an，表“一种”、“某种”的意思，如have a wonderful time，receive a good education，be made into a fine paper。有时为了表示量大，不可数名词的后面也可加“s”，如sands，ashes，waters等。但是我们在学习不可数名词的时候，特别要记住英语中有一些名词，它们无论在什么情况下，前面都不能用a/an，后面也不可加“s”，如weather，information，等。 3．有的名词既可是可数名词，也可是不可数名词英语中有相当一部分的名词，既可以是可数，也可以是不可数，它们的意义有时略有不同，有时则完全不同。如：difficulty, success, time, work，paper，glass，等。 4．用于表示可数与不可数名词的数量“多”“少”的常用词和词组跟可数名词连用的如：few, a few, many。跟不可数名词连用的如：little, a little, much。可数与不可数都能用的是：a lot of , plenty of。二、主谓一致 1．通常被看作单数的主语部分 1）不定式、动名词和主语从句。 eg.. To see is to believe. Seeing is believing. What he said was different from what he did. 2）表示“时间”“距离”“金钱数量”的名词。 eg. Twenty years is quite a long time. 10 kilometers doesn’t seem to be a long distance to Mira. 300 dollars is too much for this old coin.

高考英语语法填空——动词的时态和语态专题

高考英语——动词的时态和语态（专项练习题）单句语法填空 1．We can achieve a lot when we learn to let our differences unite，rather than ________ (divide) us. 2．Silk ________(become) one of the primary goods traded along the Silk Road by about 100 BC. 3．When the time came to make the final decision for a course，I decided to apply for the one that ________(reflect) my interest. 4．More efforts，as reported，________(make)in the years ahead to accelerate the supply－side structural reform. 5．Dashan，who ________ (learn)crosstalk，the Chinese comedic tradition，for decades，wants to mix it up with the Western stand－up tradition. 6．When walking down the street，I came across David，whom I ________ (see) for years. 7．Two years ago，while Cathy ________ (watch) the Olympics，a dream came into her sweet little head—to be a swimmer. 8．Jack ________(work)in the lab when the power cut occurred. 9.I ________(read)half of the English novel，and I’ll try to finish it at the weekend. 10．The students have been working hard on their lessons and their efforts ________ (reward)success in the end. 11．—Excuse me，which movie are you waiting for? —The new Star Wars.We ________ (wait)here for more than two hours. 12．Secret codes keep messages private.Banks，companies，and government agencies use secret codes in doing business，especially when information ________ (send)by computer. 13．People in this area are in fact French citizens because it________(be) a colony of the French Republic since 1946.

2019年高中英语语法填空专题分类训练--谓语动词2(含详解)

2019年高中英语语法填空专题分类训练--谓语动词（含详解） 1.People say that the art exhibition is worth seeing. I wish I__________(can) go with you but I’m too busy these days. 2.These elephants__________(hunt) at such a speed that they will disappear soon. 3—Hi,let’s go skatin g. —Sorry,I’m busy right now.I(fill) in an application form for a new job. 4.So fast__________he walk that I couldn’t catch up with him. 5In the last few years,China (make) great achievements in environmental protection. 6In front of the farmhouse (lie) a peasant boy. 7.In the 1950s in the U.S.A., most families had just one phone at home, and wireless phones __________(invent) yet. 8.I__________(praise) if I finish the work within one week. 9.I__________(drive) down to London when I suddenly found that I was on the wrong road. 10.I would rather you__________(tell) me the truth now. 11.In a study,a “jukebox (自动点唱机)", __________( create) , which allowed chimps to select their favorite classical pop or rock music. 12.When Daisy turned around,she found that she__________(watch) by an elephant. 13.Shakespeare's play Hamlet __________(make) into at least ten different films over the past years. 14 It was sad to me that they, so poor themselves, bring me food. 15Just as I got to the school gate, I realized I (leave) my book in the cafe. 16The first time he met the girl he ________(strike) by her wisdom and fell in love with her. 17.He hurried home, never once looking back to see if he __________(follow). 18Only by communicating with each other more frequently they clear away the misunderstandings and solve the conflict.

高中英语语法易错题型 动词语法陷阱题(含答案解析)