Unit 2 Amazing Numbers 单元重点易错专项训练 2026-2027学年沪教版英语八年级上册

**基本信息** 本专项聚焦9个单元核心易错考点，通过"易错警示+三阶分层训练"构建系统方法体系，实现从概念理解到综合应用的逻辑递进，提升语言运用与思维辨析能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |基数词/序数词|18题|具体数字与模糊数量用法、序数词构成及the的省略规则|从数词基础构成到复杂表达（大数读法、编号）| |分数/百分数|18题|分数分子分母规则、主谓一致判定|从分数表达形式到与名词搭配的语法一致性| |数字运算/动词用法|18题|plus/minus等运算表达、challenge等动词固定搭配|从数学符号语言到动词短语的语境应用| |短语/比较级/there be|27题|instead of等短语辨析、比较级规则变化、就近原则|从短语结构到句式语法的综合运用|

沪教版八年级上册 Unit 2 Amazing Numbers 重点易错专项训练 沪教版八年级上册 Unit 2 Amazing Numbers 单元重点易错专项训练 题型:选择题 + 用适当形式填空 | 题量:81题 | 考点:9个 | 含详细解析 [说明] 本卷精选本单元9个重点易错考点,每考点下设基础题3道(选择题)、提升题3道(选择题)、拓展题3道(用适当形式填空),由浅入深,层层递进。紧扣教材,自主创新,答案唯一。 考点1:基数词的构成与用法(hundred/thousand/million/billion) [易错警示] ① 具体数字+hundred/thousand/million/billion+复数名词(不加s);② 模糊数量:hundreds/thousands/millions/billions of+复数名词(加s和of);③ 易错:two hundreds students(错误,应为two hundred students);several millions(应为several million);④ hundred前有具体数字时不加s,但five hundred of the students(of短语中可加s);⑤ 大数读法:从右往左每三位加逗号,thousand/million/billion 基础题:(选择题) ( ) 1. There are about three _ students in Chen Wu's school. A. hundred B. hundreds C. hundred of D. hundreds of ( ) 2. _ of people visit Jinan every year to see the springs. A. Thousand B. Thousands C. Thousand of D. Thousands of ( ) 3. The population of Kunming is over seven _. A. million B. millions C. million of D. millions of 提升题:(选择题) ( ) 1. Which is CORRECT? A. Two hundreds books are on the shelf. B. There are five million people in this city. C. Thousands student came to the meeting. D. Several millions of birds fly south. ( ) 2. Zhang Hui's school has about eight _ pupils in total. A. hundreds B. hundred C. hundreds of D. hundred of ( ) 3. How do you read 3,456 in English? A. Three thousand four hundred and fifty-six B. Three thousands four hundreds and fifty-six C. Three thousand and four hundred fifty six D. Three thousand four hundred fifty six 拓展题:(用适当形式填空) ( ) ( ) 1. There are about five _ (hundred) books in Lily's classroom library. ( ) ( ) 2. _ (million) of stars can be seen in the sky on a clear night. ( ) ( ) 3. The king promised to give the old man two _ (thousand) grains of rice. 考点2:序数词的构成与用法(the + 序数词) [易错警示] ① 序数词前通常加the(the first, the second);② 序数词的构成:one first, two second, three third, five fifth, eight eighth, nine ninth, twelve twelfth, twenty twentieth;③ 形容词性物主代词/名词所有格后省略the(my first day, Tom's second book);④ 易错:a five-years-old boy(应为five-year-old);⑤ 编号表达:Lesson One = the first lesson;⑥ 分数分母用序数词,分子>1时分母加s 基础题:(选择题) ( ) 1. Lily lives on _ floor of the building. She lives with her family. A. five B. the five C. fifth D. the fifth ( ) 2. This is Chen Wu's _ time to visit Kunming. He went there last year too. A. two B. the two C. second D. the second ( ) 3. Today is the _ of October. It is a national holiday. A. one B. first C. the first D. a first 提升题:(选择题) ( ) 1. Which is CORRECT? A. He is a eight-years-old boy. B. She won the one prize in the contest. C. This is my twentieth birthday. D. They live on twelve floor. ( ) 2. Zhang Hui came _ in the maths competition. He was very proud. A. one B. the one C. first D. the first ( ) 3. Let's read _ today. It is about amazing numbers. A. the Lesson Five B. Lesson Five C. the Five Lesson D. Five Lesson 拓展题:(用适当形式填空) ( ) ( ) 1. Chen Wu was the _ (three) person to finish the maths test. ( ) ( ) 2. Lily's _ (one) day at the new school was amazing. ( ) ( ) 3. The king wanted to play the game for the _ (two) time. 考点3:分数、百分数表达及主谓一致 [易错警示] ① 分数:分子用基数词,分母用序数词;分子>1时分母加s(one third, two thirds);② 百分数:基数词+per cent(80% = eighty per cent);③ 分数/百分数+of+名词作主语时,谓语由名词决定单复数;④ 易错:one third of the students is(应为are,students复数);two fifth(应为fifths);⑤ 注意a half = one half, a quarter = one quarter 基础题:(选择题) ( ) 1. About _ of the students in Zhang Hui's class like maths. A. three fifth B. three fifths C. third five D. three five ( ) 2. _ of the water in the bottle is clean enough to drink. A. One third B. One thirds C. Two third D. Two three ( ) 3. Eighty _ of the people in Chen Wu's village work on farms. A. percent B. percents C. per cent D. per cents 提升题:(选择题) ( ) 1. Two thirds of the students in our school _ from Jinan. A. is B. are C. was D. has been ( ) 2. About 70% of the earth _ covered by water. A. is B. are C. was D. were ( ) 3. Which is the CORRECT way to write the fraction? A. 3/4 = three fourth B. 2/5 = two fifth C. 1/3 = one third D. 5/6 = five sixths 拓展题:(用适当形式填空) ( ) ( ) 1. One fourth of the apples _ (be) bad. We can't eat them. ( ) ( ) 2. Three _ (five) of the class went on the school trip. ( ) ( ) 3. About 50 _ (percent) of the time was spent on homework. 考点4:数字运算表达(plus/minus/multiplied by/divided by) [易错警示] ① 加法:plus/add...and...(2+3=5: Two plus three is five);② 减法:minus/subtract...from...(10-4=6: Ten minus four is six);③ 乘法:multiplied by/times(3x4=12: Three multiplied by four is twelve);④ 除法:divided by(12/3=4: Twelve divided by three is four);⑤ 等号用equals/is/makes;⑥ 易错:注意运算结果的谓语用单数is/equals/makes 基础题:(选择题) ( ) 1. How do you say '8 + 7 = 15' in English? A. Eight plus seven is fifteen. B. Eight and seven are fifteen. C. Eight add seven makes fifteen. D. Eight plus seven are fifteen. ( ) 2. Twelve _ three is four. It is a simple division. A. plus B. minus C. multiplied by D. divided by ( ) 3. Nine _ six is three. The answer is quite simple. A. plus B. minus C. multiplied by D. divided by 提升题:(选择题) ( ) 1. Which sentence is CORRECT? A. Five times six are thirty. B. Ten minus three is seven. C. Eight divide by two is four. D. Six plus four equals ten. ( ) 2. In the story, the king had to _ the amount for each square. A. plus B. minus C. double D. divide ( ) 3. What is 15 multiplied by 4? — It _ sixty. A. are B. is C. were D. have 拓展题:(用适当形式填空) ( ) ( ) 1. Three _ (multiply) by six is eighteen. ( ) ( ) 2. Twenty-four _ (divide) by eight is three. ( ) ( ) 3. The population of the city _ (double) in the past ten years. 考点5:challenge/promise/agree/reply 高频动词用法 [易错警示] ① challenge sb. to sth./to do sth. 向某人挑战;② promise (sb.) to do sth. 承诺做某事;promise (sb.) + that从句;③ agree to do sth. 同意做某事;agree with sb. 同意某人(观点);agree on sth. 就某事达成一致;④ reply to sb./sth. 回复(to不可省略);⑤ 易错:challenge to do(缺sb.);promise do(应为promise to do);agree doing(应为agree to do);reply sb.(缺to) 基础题:(选择题) ( ) 1. The king _ the old man to a game of chess and lost. A. challenged B. challenges C. challenging D. to challenge ( ) 2. Chen Wu _ to help his friend with maths every weekend. A. promised B. promises C. promising D. to promise ( ) 3. Lily agreed _ part in the school maths competition. A. take B. to take C. taking D. taken 提升题:(选择题) ( ) 1. Which sentence is WRONG? A. He challenged me to a game. B. She promised to come on time. C. They agreed taking part in the activity. D. Jam replied to my email quickly. ( ) 2. Zhang Hui replied _ his teacher's question about the maths problem. A. /(不填) B. to C. with D. for ( ) 3. The king promised the old man _ he could have any prize. A. /(不填) B. that C. what D. which 拓展题:(用适当形式填空) ( ) ( ) 1. Chen Wu's friend _ (challenge) him to solve a difficult maths problem. ( ) ( ) 2. Lily agreed _ (help) her brother with his science project. ( ) ( ) 3. Jam _ (reply) to the email as soon as he read it. 考点6:instead of / without hesitation / thought for a moment 短语辨析 [易错警示] ① instead of + n./doing 代替/而不是(of后接名词或动名词);instead副词单独用,放句末;② without hesitation 毫不犹豫地(hesitation是不可数名词);③ thought for a moment 思考了一会儿(think的过去式thought);④ 易错:instead of do(应为instead of doing);without hesitate(应为without hesitation);⑤ instead放句末:He didn't go out. Instead, he stayed home. 基础题:(选择题) ( ) 1. The old man wanted rice _ gold or silver as his prize. A. instead B. instead of C. without D. with ( ) 2. Lily answered the difficult question _ hesitation. She was very confident. A. with B. without C. by D. through ( ) 3. Chen Wu _ for a moment before he gave the right answer. A. thought B. think C. thinks D. thinking 提升题:(选择题) ( ) 1. Which is CORRECT? A. He went to the park instead of stay at home. B. She helped me without any hesitation. C. They thought for moment before answering. D. We used pen instead of writing by hand. ( ) 2. Jam didn't take the bus. _, he rode his bike to school. A. Instead of B. Instead C. Without D. Rather ( ) 3. Zhang Hui chose to study maths _ going out to play football. A. instead B. instead of C. without D. rather 拓展题:(用适当形式填空) ( ) ( ) 1. Lily decided to write a letter _ (instead of / instead) sending an email. ( ) ( ) 2. Chen Wu answered the teacher's question _ (without) hesitation. He knew the answer well. ( ) ( ) 3. The old man _ (think) for a moment before he made his request. 考点7:形容词/副词比较级与最高级(含数字比较) [易错警示] ① 规则变化:短词加-er/-est(tall taller tallest);长词加more/most(beautiful more beautiful most beautiful);② 双写尾字母:big bigger, hot hotter, fat fatter;③ 辅音+y结尾:heavy heavier, easy easier;④ 不规则:good/well better best, bad worse worst, many/much more most, little less least;⑤ 比较级+than;最高级前加the;⑥ The + 比较级..., the + 比较级... 越……越…… 基础题:(选择题) ( ) 1. The population of Jinan is _ than that of Kunming. A. large B. larger C. largest D. more large ( ) 2. Chen Wu is one of _ students in his class. He always gets top marks. A. smart B. smarter C. the smartest D. smartest ( ) 3. The more you practise counting, _ you will be at it. A. good B. better C. the better D. best 提升题:(选择题) ( ) 1. Which sentence is CORRECT? A. He is more taller than his brother. B. This number is the most big I have seen. C. The more he calculated, the faster he became. D. She is the better student in the class. ( ) 2. Zhang Hui's maths score is much _ than last term. He studied harder. A. good B. better C. best D. well ( ) 3. Jam can count _ of all the students in Grade 8. He is amazing. A. fast B. faster C. fastest D. the fastest 拓展题:(用适当形式填空) ( ) ( ) 1. The king realized the number was getting _ (big) and bigger each square. ( ) ( ) 2. Lily is _ (good) at maths than her brother, but he tries harder. ( ) ( ) 3. The _ (many) numbers you remember, the easier maths will become. 考点8:double/amount/count/realize 实义动词用法 [易错警示] ① double 作动词"使加倍"(double the amount);作形容词"双倍的"(a double room);② amount of + 不可数名词(a large amount of money);③ count 作动词"数/计算"(count the numbers);④ realize 作动词"意识到"(realize + that从句);⑤ 易错:a large amount of + 可数名词(应为不可数);double作动词不加s(三单加s doubles);⑥ realise是英式拼写,realize是美式 基础题:(选择题) ( ) 1. The old man asked the king to _ the amount of rice for each square. A. double B. doubles C. doubling D. to double ( ) 2. After a few squares, the king _ he couldn't keep his promise. A. realize B. realizes C. realized D. to realize ( ) 3. Chen Wu can _ from 1 to 100 in English very quickly. A. count B. counts C. counting D. counted 提升题:(选择题) ( ) 1. Which is CORRECT? A. A large amount of students like maths. B. The price of rice has doubled in a year. C. She can counts very fast. D. He realise he made a mistake. ( ) 2. _ of money was spent on the school's new computer system. A. A large amount B. A large number C. Large amounts D. Many amount ( ) 3. Lily didn't _ how difficult the maths problem was until she tried it. A. double B. count C. realize D. promise 拓展题:(用适当形式填空) ( ) ( ) 1. The king's promise _ (double) the amount of rice for each square. ( ) ( ) 2. Zhang Hui _ (realize) that he had left his homework at home. ( ) ( ) 3. Chen Wu can count up to one _ (thousand) without making a mistake. 考点9:there will be / there is / there are 将来时与就近原则 [易错警示] ① there will be 将会有(一般将来时there will be,不用there will have);② there is/are 就近原则:There is a book and two pens. / There are two pens and a book.;③ 易错:there will have(错误);there have been(应为there has been);④ there used to be 过去曾有;⑤ there must be 一定有;⑥ 反义疑问句:There is a book, isn't there? 基础题:(选择题) ( ) 1. There _ a maths test next Monday. You should prepare for it. A. will be B. will have C. is D. are ( ) 2. _ there a library in Chen Wu's school? Yes, there is a big one. A. Will B. Is C. Are D. Do ( ) 3. There _ some water and three apples on the table just now. A. is B. are C. was D. were 提升题:(选择题) ( ) 1. Which is CORRECT? A. There will have a meeting tomorrow. B. There is a teacher and twenty students in the room. C. There are a computer and some books on the desk. D. There have been many changes in the school. ( ) 2. There _ many amazing numbers in our daily life that we don't notice. A. is B. are C. was D. has ( ) 3. There must _ a reason why Jam is late for school every day. A. be B. have C. is D. are 拓展题:(用适当形式填空) ( ) ( ) 1. There _ (be) a school trip to Kunming next month. ( ) ( ) 2. There _ (be) not enough rice in the whole country for the chessboard. ( ) ( ) 3. _ (be) there any after-school clubs in your school last year? 参考答案与详细解析 考点1:基数词的构成与用法(hundred/thousand/million/billion) [基础题] (1) A 具体数字three后hundred不加s,直接加复数名词students;three hundred students"三百名学生"。 (2) D 模糊数量用thousands of"成千上万的";every year提示每年有很多人。 (3) A 具体数字seven后million不加s;over seven million"超过七百万"。 [提升题] (1) B B项five million不加s正确;A项应为two hundred;C项应为Thousands of students;D项应为several million birds。 (2) B about eight hundred"大约八百",具体数字后hundred不加s;in total提示总数。 (3) A 大数读法:thousand+hundred+and+fifty-six;百位和十位间加and是英式读法规范。 [拓展题] (1) hundred 具体数字five后hundred不加s;about five hundred books"大约五百本书"。 (2) Millions 模糊数量millions of"数百万的",millions首字母大写或在句中小写均可,此处句首大写。 (3) thousand 具体数字two后thousand不加s;two thousand grains"两千粒"。 考点2:序数词的构成与用法(the + 序数词) [基础题] (1) D 序数词前加the,the fifth floor"五楼";live on + 楼层固定用法。 (2) C 形容词性物主代词his后序数词不加the,second time"第二次"。 (3) B 日期表达用序数词,the first of October"十月一日";the已在前文给出。 [提升题] (1) C C项my twentieth birthday"我的二十岁生日"正确,物主代词后序数词不加the;A项应为eight-year-old;B项应为first prize;D项应为twelfth floor。 (2) D come first"得第一",但此处有the,the first place"第一名";in the competition提示比赛排名。 (3) B 编号表达:Lesson Five(名词+基数词),首字母大写;也可用the fifth lesson。 [拓展题] (1) third 序数词the third"第三",the已给出;person提示顺序。 (2) first 物主代词Lily's后序数词不加the,first day"第一天"。 (3) second the second time"第二次",序数词前加the;for the...time固定用法。 考点3:分数、百分数表达及主谓一致 [基础题] (1) B 分数表达:分子three(基数词),分母fifths(序数词复数);two thirds"三分之二"。 (2) A one third"三分之一",分子为1时分母不加s;water不可数谓语用is。 (3) A percent"百分之",不用复数percents;Eighty percent"百分之八十"。 [提升题] (1) B 分数+of+复数名词students,谓语用复数are;from Jinan提示来自济南。 (2) A 百分数+of+不可数名词the earth(此处指地球表面),谓语用单数is;covered by water"被水覆盖"。 (3) C C项one third"三分之一"正确;A项应为three fourths;B项应为two fifths;D项应为five sixths。 [拓展题] (1) are 分数+of+复数名词apples,谓语用复数are;bad提示坏了不能吃。 (2) fifths 分数表达,分子three>1,分母fifth加s fifths;of the class提示班级的一部分。 (3) percent 50 percent"百分之五十",percent不用复数;time不可数谓语用was spent。 考点4:数字运算表达(plus/minus/multiplied by/divided by) [基础题] (1) A 加法用plus,Two plus three is five结构;8+7=15: Eight plus seven is fifteen。 (2) D 12/3=4是除法,divided by"除以";division提示除法运算。 (3) B 9-6=3是减法,minus"减去";three提示差。 [提升题] (1) B B项Ten minus three is seven"十减三等于七"正确;A项应为is thirty;C项应为divided by;D项应为equals ten或is ten。 (2) C double"使加倍",课文故事中老人要求每格米粒数翻倍;double the amount"使数量加倍"。 (3) B 15x4=60,运算结果谓语用单数is;multiplied by"乘以"提示乘法。 [拓展题] (1) multiplied Three multiplied by six"三乘以六",multiplied by"乘以"固定用法。 (2) divided Twenty-four divided by eight"二十四除以八",divided by"除以"固定用法。 (3) has doubled double"翻倍",in the past ten years提示现在完成时has doubled;population单数用has。 考点5:challenge/promise/agree/reply 高频动词用法 [基础题] (1) A challenge sb. to sth."向某人挑战某事",challenged过去时;lost提示过去。 (2) B promise to do sth."承诺做某事",every weekend提示一般现在时promises。 (3) B agree to do sth."同意做某事",to后接动词原形take。 [提升题] (1) C C项agree后接to do,应为agree to take part in;agree doing结构错误。 (2) B reply to sb./sth."回复某人/某物",to不可省略;question提示回复问题。 (3) B promise + that从句"承诺……",that引导宾语从句;any prize提示承诺内容。 [拓展题] (1) challenged challenge sb. to do sth."向某人挑战做某事",challenged过去时;solve a problem"解决问题"。 (2) to help agree to do sth."同意做某事",to后接动词原形help。 (3) replied reply to"回复",as soon as read提示过去时用replied。 考点6:instead of / without hesitation / thought for a moment 短语辨析 [基础题] (1) B instead of + n."而不是",instead of gold"而不是金子";rice和gold并列对比。 (2) B without hesitation"毫不犹豫",confident提示有自信不犹豫。 (3) A thought for a moment"思考了一会儿",thought是think的过去式;before gave提示过去时。 [提升题] (1) B B项without hesitation"毫不犹豫"正确;A项instead of后应为staying;C项应为for a moment;D项应为instead of a pen或instead of writing。 (2) B instead副词"反而/相反",放句首用逗号隔开;rode his bike提示替代方式。 (3) B instead of + doing"而不是做某事",going out是动名词;chose to study提示选择。 [拓展题] (1) instead of instead of + doing"而不是",sending是动名词;write a letter与send an email对比。 (2) without without hesitation"毫不犹豫",knew the answer well提示不犹豫。 (3) thought think for a moment"想了一会儿",thought是过去式;before made提示过去时。 考点7:形容词/副词比较级与最高级(含数字比较) [基础题] (1) B than提示比较级,large的单音节比较级larger;population用large修饰。 (2) C one of + the + 最高级 + 复数名词,the smartest students"最聪明的学生之一"。 (3) C The + 比较级..., the + 比较级..."越……越……",The more...the better..."越多……越好"。 [提升题] (1) C C项The more...the faster"越算越快"结构正确;A项taller已是比较级不能加more;B项big应为biggest;D项best才对。 (2) B than提示比较级,good的比较级better;much修饰比较级better"好得多"。 (3) D of all提示最高级范围,fast的最高级the fastest;can count提示计数速度。 [拓展题] (1) bigger bigger and bigger"越来越大",big双写g加er;each square提示每格递增。 (2) better good的比较级better;than提示比较级;at maths"擅长数学"。 (3) more The + 比较级..., the + 比较级..."越……越……";many的比较级more。 考点8:double/amount/count/realize 实义动词用法 [基础题] (1) A ask sb. to do sth.,to后接动词原形double"使加倍";each square提示每格翻倍。 (2) C realize"意识到",After a few squares提示过去时用realized;couldn't提示过去。 (3) A can + 动词原形count"数数";from 1 to 100提示计数范围。 [提升题] (1) B B项double"翻倍",has doubled现在完成时正确;A项amount of+不可数,students应改用number of;C项can后接原形count;D项realise应为realizes。 (2) A a large amount of + 不可数名词money,amount用单数;was spent提示不可数。 (3) C realize"意识到",not...until"直到……才";difficult提示意识到难度。 [拓展题] (1) doubled double作动词"使加倍",故事用过去时doubled;each square提示每格。 (2) realized realize"意识到",had left提示过去时用realized;left...at home提示忘带。 (3) thousand one thousand"一千",具体数字后thousand不加s;count up to"数到"。 考点9:there will be / there is / there are 将来时与就近原则 [基础题] (1) A next Monday提示将来时,there will be"将会有";test单数用be。 (2) B a library单数用Is there;Yes, there is提示单数确认。 (3) C 就近原则,离be最近的是water(不可数单数),用was;just now提示过去时。 [提升题] (1) B B项就近原则,a teacher单数用is正确;A项应为there will be;C项应为is a computer;D项have应为has。 (2) B 就近原则,many numbers复数用are;daily life提示一般现在时。 (3) A There must be"一定有",must后接动词原形be;a reason单数用be。 [拓展题] (1) will be next month提示将来时,there will be"将会有";school trip单数用be。 (2) was 故事用过去时,rice不可数用was;not enough"不够"。 (3) Were last year提示过去时,clubs复数用Were;any修饰复数名词。 - - 学科网(北京)股份有限公司 $