Unit 2 Great ideas单元知识总结及重点易错专项训练2026-2027学年沪教版英语九年级上册

**基本信息** 沪教版九年级上册Unit 2专项训练，聚焦10个重点易错考点，90题分层设计（基础/提升/拓展），融合知识梳理与方法解析，系统强化语言能力与思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |十大重点易错考点|90题（每考点3基础+3提升+3拓展）|被动语态强调时态与主谓一致，定语从句聚焦关系词选择，短语动词注重语境辨析|从基础词汇句型到语法应用，由简单到复杂递进，构建“概念-辨析-拓展”逻辑链|

沪教版九年级上册 Unit 2 Great ideas 单元知识总结及重点易错专项训练 ■ ■ ■ ■ ■ ■ ■ 说明：本练习紧扣最新教材精选 10 个重点易错考点，每个考点含基础题×3、提升题×3、拓展题×3，共 90 题。 第一部分 单元重点梳理 一、重点单词（Section A & B 核心词汇） 单词 词性 释义 invention n. 发明；发明物 inventor n. 发明家 create v. 创造；创作 creative adj. 有创造力的 imagine v. 想象；设想 thought n. 想法；思想 unusual adj. 不寻常的 unexpected adj. 出乎意料的 pleasant adj. 令人愉快的 practical adj. 实用的 valuable adj. 有价值的 mention v. 提到；提及 describe v. 描述；描写 discover v. 发现 design v./n. 设计；图案 model n. 模型；模范 experiment n. 实验；试验 fail v. 失败；未能 failure n. 失败 succeed v. 成功 success n. 成功 successful adj. 成功的 realize v. 意识到；实现 allow v. 允许 二、重点短语 短语 释义 come up with 想出；提出 think of 想到；想起 work out 解决；算出 be used for 被用来做（后接动名词） be used to do 被用来做（后接动词原形） at first 起初；开始 in the end 最后；终于 give up 放弃 keep on doing 继续做某事 be proud of 为……感到骄傲 lead to 导致；通向 make a difference 起作用；有影响 as a result 结果 instead of 代替；而不是 be interested in 对……感兴趣 try one's best 尽力 in one's opinion 在某人看来 have an influence on 对……有影响 be known for 因……而闻名 think about 考虑；思考 三、重点句型 1. Who invented the telephone? — Alexander Bell did.（谁发明了……？） 2. What is the machine used for? — It is used for cutting paper.（被用来做什么？） 3. The great invention was created by a young man.（被动语态描述发明者） 4. Great ideas can change the world.（伟大想法改变世界） 5. Chen Wei came up with a wonderful idea yesterday.（想出主意） 6. The tool is used to measure the speed.（be used to do 表用途） 7. Bella succeeded in inventing a small machine.（succeed in doing） 8. This invention makes our life much easier.（make + 宾语 + 形容词） 9. Without electricity, we could not live comfortably.（without 表条件） 10. It is important to be creative in our daily life.（It is + adj. + to do） 四、重点语法 1. 一般现在时被动语态：am/is/are + 过去分词。如：English is spoken widely. 2. 一般过去时被动语态：was/were + 过去分词。如：The bridge was built last year. 3. 情态动词被动语态：can/must/should + be + 过去分词。如：The work must be finished. 4. 不定式作目的状语：to do 表目的。如：He went there to see the invention. 5. 定语从句：先行词指人用 who/that，指物用 which/that。 6. be used for doing 与 be used to do 均表“被用来做”，前者接动名词，后者接动词原形。 7. 现在完成时：have/has + 过去分词，常与 already/yet/since/for 连用。 8. so/such...that 句型：so + 形容词/副词；such + (a/an) + 形容词 + 名词。 第二部分 十大重点易错考点专项练习 考点一：一般现在时被动语态（am/is/are + 过去分词） 基础题：（选择题） ◇（ ）1. The book ___ by Chen Wei. A. is written B. writes C. wrote D. was written ◇（ ）2. English ___ in many countries. A. speaks B. is spoken C. spoke D. was spoken ◇（ ）3. The classroom ___ every day. A. cleans B. cleaned C. is cleaned D. was cleaned 提升题：（选择题） ▷（ ）1. The flowers ___ by Bella every morning. A. water B. watered C. is watered D. are watered ▷（ ）2. The new bridge ___ by workers in the city. A. is built B. builds C. built D. was built ▷（ ）3. Our school ___ by many tall trees. A. surrounds B. is surrounded C. surrounded D. was surrounded 拓展题：（选择题） ★（ ）1. It is said that the invention ___ in Wuhan. A. makes B. made C. is made D. was made ★（ ）2. The difficult problem ___ by the students easily. A. solves B. solved C. was solved D. is solved ★（ ）3. The song ___ by Lily beautifully. A. is sung B. sings C. sang D. was sung 考点二：一般过去时被动语态（was/were + 过去分词） 基础题：（选择题） ◇（ ）1. The window ___ yesterday. A. broke B. was broken C. breaks D. is broken ◇（ ）2. The books ___ by Chen Wei last week. A. returned B. return C. were returned D. was returned ◇（ ）3. The letter ___ by Olivia in 2020. A. wrote B. writes C. is written D. was written 提升题：（选择题） ▷（ ）1. The new bridge ___ in Xiamen last year. A. was built B. built C. builds D. is built ▷（ ）2. The problem ___ by the teacher just now. A. solved B. was solved C. solves D. is solved ▷（ ）3. The flowers ___ by Bella yesterday. A. watered B. water C. were watered D. was watered 拓展题：（选择题） ★（ ）1. It was reported that the machine ___ in Qingdao. A. invented B. invents C. is invented D. was invented ★（ ）2. The house ___ by my grandfather in 1990. A. was designed B. designed C. designs D. is designed ★（ ）3. The gifts ___ to the children last Christmas. A. gave B. were given C. give D. was given 考点三：情态动词被动语态（can/must/should + be + 过去分词） 基础题：（选择题） ◇（ ）1. The work ___ on time. A. must finish B. must finished C. must be finished D. is finished ◇（ ）2. The book ___ in the library. A. can find B. can found C. is found D. can be found ◇（ ）3. The rules ___ by everyone. A. should be followed B. should follow C. should followed D. are followed 提升题：（选择题） ▷（ ）1. The problem ___ by the teacher. A. can solve B. can be solved C. can solved D. is solved ▷（ ）2. The letter ___ at once. A. must write B. must wrote C. must be written D. is written ▷（ ）3. The experiment ___ carefully. A. should do B. should did C. is done D. should be done 拓展题：（选择题） ★（ ）1. The invention ___ by the company. A. can be used B. can use C. can used D. is used ★（ ）2. The children ___ by the teachers. A. must protect B. must be protected C. must protected D. are protected ★（ ）3. The plan ___ by the manager. A. should discuss B. should discussed C. should be discussed D. is discussed 考点四：不定式作目的状语（to do） 基础题：（选择题） ◇（ ）1. He went to Wuhan ___ his friend. A. visit B. visiting C. visited D. to visit ◇（ ）2. She came here ___ the meeting. A. to attend B. attend C. attending D. attended ◇（ ）3. They stopped ___ a rest. A. have B. to have C. having D. had 提升题：（选择题） ▷（ ）1. Chen Wei got up early ___ the early train. A. catch B. catching C. to catch D. caught ▷（ ）2. Bella went to the shop ___ some food. A. buy B. buying C. bought D. to buy ▷（ ）3. They worked hard ___ the first prize. A. to win B. win C. winning D. won 拓展题：（选择题） ★（ ）1. Olivia went to Xiamen ___ the invention exhibition. A. see B. to see C. seeing D. saw ★（ ）2. The students read more books ___ more knowledge. A. get B. getting C. to get D. got ★（ ）3. He saved money ___ a new computer. A. buy B. buying C. bought D. to buy 考点五：定语从句关系词（who/that/which/whose/why/where） 基础题：（选择题） ◇（ ）1. The boy ___ won the prize is Zhang Hao. A. who B. which C. what D. where ◇（ ）2. The book ___ is on the desk is mine. A. who B. that C. what D. where ◇（ ）3. The invention ___ helps people is great. A. who B. what C. which D. where 提升题：（选择题） ▷（ ）1. The girl ___ mother is a teacher is Lily. A. who B. which C. that D. whose ▷（ ）2. The city ___ I visited is Wuhan. A. that B. who C. what D. where ▷（ ）3. The man ___ invented the machine is Chen Wei. A. which B. who C. what D. where 拓展题：（选择题） ★（ ）1. The reason ___ he was late is unknown. A. that B. which C. why D. who ★（ ）2. The school ___ I studied is in Xiamen. A. that B. which C. who D. where ★（ ）3. The idea ___ came to him is unusual. A. that B. who C. what D. where 考点六：be used for doing 与 be used to do 辨析 基础题：（选择题） ◇（ ）1. The pen ___ writing. A. is used to B. is used for C. used for D. used to ◇（ ）2. The knife ___ cut things. A. is used for B. used to C. is used to D. used for ◇（ ）3. The machine ___ making paper. A. is used to B. used for C. used to D. is used for 提升题：（选择题） ▷（ ）1. The tool ___ dig holes. A. is used to B. is used for C. used to D. is used for ▷（ ）2. The room ___ storing books. A. is used to B. is used for C. used to D. is used for ▷（ ）3. The phone ___ take photos. A. is used for B. used to C. is used to D. is used for 拓展题：（选择题） ★（ ）1. The invention ___ helping the blind. A. is used to B. used for C. used to D. is used for ★（ ）2. The bridge ___ connect two cities. A. is used to B. is used for C. used to D. is used for ★（ ）3. The app ___ learning English. A. is used to B. is used for C. used for D. used to 考点七：现在完成时（have/has + 过去分词） 基础题：（选择题） ◇（ ）1. Chen Wei ___ the book already. A. read B. reads C. has read D. readed ◇（ ）2. They ___ to Wuhan twice. A. went B. go C. was D. have been ◇（ ）3. Olivia ___ her homework. A. has finished B. finished C. finishes D. finish 提升题：（选择题） ▷（ ）1. Bella ___ the letter since morning. A. wrote B. has written C. writes D. write ▷（ ）2. The students ___ the experiment. A. did B. do C. have done D. does ▷（ ）3. Zhang Hao ___ the movie. A. saw B. sees C. see D. has seen 拓展题：（选择题） ★（ ）1. The company ___ a new product. A. has made B. made C. makes D. make ★（ ）2. They ___ many great ideas. A. had B. have had C. have D. has ★（ ）3. Lily ___ the competition. A. won B. wins C. has won D. win 考点八：so/such...that 句型 基础题：（选择题） ◇（ ）1. He is ___ tired ___ he can't walk. A. such B. very C. too D. so ◇（ ）2. It is ___ a good book ___ we all like it. A. such B. so C. very D. too ◇（ ）3. She is ___ happy ___ she cries. A. such B. so C. very D. too 提升题：（选择题） ▷（ ）1. They are ___ lovely children ___ we like them. A. so B. very C. such D. too ▷（ ）2. The idea is ___ great ___ it changes the world. A. such B. very C. too D. so ▷（ ）3. He ran ___ fast ___ he won the race. A. so B. such C. very D. too 拓展题：（选择题） ★（ ）1. It was ___ unusual invention ___ everyone talked about it. A. so an B. such an C. a so D. an so ★（ ）2. The story is ___ moving ___ we all cried. A. such B. very C. so D. too ★（ ）3. They had ___ little time ___ they hurried. A. such B. very C. too D. so 考点九：短语动词辨析（come up with / think of / work out / give up） 基础题：（选择题） ◇（ ）1. Chen Wei ___ a good idea yesterday. A. came up with B. came up C. thought D. worked out ◇（ ）2. Can you ___ the math problem? A. work on B. work out C. come up with D. give up ◇（ ）3. Don't ___ your dream. A. give in B. come up with C. give up D. work out 提升题：（选择题） ▷（ ）1. Lily ___ a new way to solve it. A. thought about B. came up with C. worked out D. thought of ▷（ ）2. They ___ the plan after discussion. A. worked out B. worked on C. came up with D. gave up ▷（ ）3. Bella never ___ even when she fails. A. gives in B. gives up C. comes up with D. works out 拓展题：（选择题） ★（ ）1. Zhang Hao ___ an unusual method. A. came across B. thought of C. came up with D. worked out ★（ ）2. Olivia ___ the answer by herself. A. worked on B. came up with C. gave up D. worked out ★（ ）3. We should ___ better solutions. A. think of B. think about C. come up with D. give up 考点十：形容词比较级与最高级 基础题：（选择题） ◇（ ）1. This invention is ___ than that one. A. useful B. more useful C. most useful D. usefuller ◇（ ）2. Chen Wei is ___ student in our class. A. creative B. more creative C. the most creative D. creativest ◇（ ）3. The blue pen is ___ of the three. A. cheap B. cheaper C. cheaply D. the cheapest 提升题：（选择题） ▷（ ）1. This idea is ___ than yours. A. better B. good C. best D. well ▷（ ）2. Who is ___ in your group? A. tall B. the tallest C. taller D. tallly ▷（ ）3. The new method is ___ than the old one. A. efficient B. most efficient C. more efficient D. efficenter 拓展题：（选择题） ★（ ）1. Of all the inventions, this is ___. A. valuable B. more valuable C. valuablest D. the most valuable ★（ ）2. ___ we practise, ___ we become. A. The more; the better B. The most; the best C. More; better D. Most; best ★（ ）3. This is ___ book I have ever read. A. interesting B. the most interesting C. more interesting D. interestinger 第三部分 详细参考解析 考点一：一般现在时被动语态（am/is/are + 过去分词） 基础题： 1. 【答案】A 【解析】主语 book 与 write 是被动关系，且陈述常态用一般现在时被动 is written。 2. 【答案】B 【解析】English 与 speak 被动，客观事实用一般现在时 is spoken。 3. 【答案】C 【解析】every day 表经常，主语 classroom 被动，用 is cleaned。 提升题： 1. 【答案】D 【解析】flowers 复数，被动，every morning 用 are watered。 2. 【答案】A 【解析】bridge 与 build 被动，陈述常态用 is built。 3. 【答案】B 【解析】school 被树木环绕，一般现在时被动 is surrounded。 拓展题： 1. 【答案】C 【解析】发明被制造，客观介绍用一般现在时被动 is made。 2. 【答案】D 【解析】problem 被解决，常态用 is solved。 3. 【答案】A 【解析】song 被唱，常态用 is sung。 考点二：一般过去时被动语态（was/were + 过去分词） 基础题： 1. 【答案】B 【解析】yesterday 过去，window 被动，was broken。 2. 【答案】C 【解析】books 复数过去被动，were returned。 3. 【答案】D 【解析】letter 被写，2020 过去，was written。 提升题： 1. 【答案】A 【解析】bridge 过去被建，was built。 2. 【答案】B 【解析】just now 刚才，被动过去 was solved。 3. 【答案】C 【解析】flowers 复数，yesterday 过去被动 were watered。 拓展题： 1. 【答案】D 【解析】machine 过去被发明，was invented。 2. 【答案】A 【解析】house 过去被设计，was designed。 3. 【答案】B 【解析】gifts 复数过去被动，were given。 考点三：情态动词被动语态（can/must/should + be + 过去分词） 基础题： 1. 【答案】C 【解析】work 必须被完成，情态被动 must be + done。 2. 【答案】D 【解析】book 能被找到，can be found。 3. 【答案】A 【解析】rules 应被遵守，should be followed。 提升题： 1. 【答案】B 【解析】problem 能被解决，can be solved。 2. 【答案】C 【解析】letter 必须被写，must be written。 3. 【答案】D 【解析】experiment 应被做，should be done。 拓展题： 1. 【答案】A 【解析】invention 能被使用，can be used。 2. 【答案】B 【解析】children 必须被保护，must be protected。 3. 【答案】C 【解析】plan 应被讨论，should be discussed。 考点四：不定式作目的状语（to do） 基础题： 1. 【答案】D 【解析】不定式 to visit 表目的。 2. 【答案】A 【解析】to attend 表目的。 3. 【答案】B 【解析】stop to do 停下去做另一事，to have 表目的。 提升题： 1. 【答案】C 【解析】早起为了赶火车，to catch 目的状语。 2. 【答案】D 【解析】去商店为了买食物，to buy 目的。 3. 【答案】A 【解析】努力为了获奖，to win 目的。 拓展题： 1. 【答案】B 【解析】去厦门为了看展览，to see 目的。 2. 【答案】C 【解析】读书为了获取知识，to get 目的。 3. 【答案】D 【解析】省钱为了买电脑，to buy 目的。 考点五：定语从句关系词（who/that/which/whose/why/where） 基础题： 1. 【答案】A 【解析】先行词 boy 指人，定语从句缺主语用 who。 2. 【答案】B 【解析】先行词 book 指物，用 that/which，选项中 that 正确。 3. 【答案】C 【解析】先行词 invention 指物，用 which。 提升题： 1. 【答案】D 【解析】先行词 girl 与 mother 所属关系，用 whose。 2. 【答案】A 【解析】先行词 city 指物，visit 缺宾语用 that。 3. 【答案】B 【解析】先行词 man 指人，缺主语用 who。 拓展题： 1. 【答案】C 【解析】先行词 reason 表原因，用 why。 2. 【答案】D 【解析】先行词 school 表地点，用 where。 3. 【答案】A 【解析】先行词 idea 指物，用 that。 考点六：be used for doing 与 be used to do 辨析 基础题： 1. 【答案】B 【解析】pen 被用来写字，for 后接动名词 writing。 2. 【答案】C 【解析】knife 被用来切东西，to 后接动词原形 cut。 3. 【答案】D 【解析】for 后接 making，用 is used for。 提升题： 1. 【答案】A 【解析】to 后 dig 原形，is used to。 2. 【答案】B 【解析】for 后 storing，is used for。 3. 【答案】C 【解析】to 后 take 原形，is used to。 拓展题： 1. 【答案】D 【解析】for 后 helping，is used for。 2. 【答案】A 【解析】to 后 connect 原形，is used to。 3. 【答案】B 【解析】for 后 learning，is used for。 考点七：现在完成时（have/has + 过去分词） 基础题： 1. 【答案】C 【解析】already 现完标志，Chen Wei 三单用 has read。 2. 【答案】D 【解析】twice 现完，they 用 have been。 3. 【答案】A 【解析】作业已完成，Olivia 三单 has finished。 提升题： 1. 【答案】B 【解析】since morning 现完，Bella 三单 has written。 2. 【答案】C 【解析】学生已完成实验，have done。 3. 【答案】D 【解析】张浩看过电影，三单 has seen。 拓展题： 1. 【答案】A 【解析】公司已制造新产品，三单 has made。 2. 【答案】B 【解析】他们已有许多好主意，have had。 3. 【答案】C 【解析】莉莉已赢得比赛，三单 has won。 考点八：so/such...that 句型 基础题： 1. 【答案】D 【解析】tired 形容词，用 so...that。 2. 【答案】A 【解析】such + a + adj + 名词，such a good book。 3. 【答案】B 【解析】happy 形容词，so...that。 提升题： 1. 【答案】C 【解析】children 名词，such + adj + 名词。 2. 【答案】D 【解析】great 形容词，so...that。 3. 【答案】A 【解析】fast 副词，so...that。 拓展题： 1. 【答案】B 【解析】such + an + adj + 单数名词，such an unusual invention。 2. 【答案】C 【解析】moving 形容词，so...that。 3. 【答案】D 【解析】little 表数量少，so little time。 考点九：短语动词辨析（come up with / think of / work out / give up） 基础题： 1. 【答案】A 【解析】想出主意用 come up with。 2. 【答案】B 【解析】解决问题用 work out。 3. 【答案】C 【解析】放弃梦想用 give up。 提升题： 1. 【答案】D 【解析】想到新方法用 think of。 2. 【答案】A 【解析】制定出计划用 work out。 3. 【答案】B 【解析】即使失败也不放弃，gives up。 拓展题： 1. 【答案】C 【解析】想出方法用 come up with。 2. 【答案】D 【解析】她自己算出答案，worked out。 3. 【答案】A 【解析】想到更好的解决办法用 think of。 考点十：形容词比较级与最高级 基础题： 1. 【答案】B 【解析】多音节形容词比较级 more useful。 2. 【答案】C 【解析】最高级 the most creative。 3. 【答案】D 【解析】三者中最便宜 the cheapest。 提升题： 1. 【答案】A 【解析】good 比较级 better。 2. 【答案】B 【解析】最高级 the tallest。 3. 【答案】C 【解析】多音节比较级 more efficient。 拓展题： 1. 【答案】D 【解析】最高级 the most valuable。 2. 【答案】A 【解析】the + 比较级…the + 比较级，The more…the better。 3. 【答案】B 【解析】最高级 the most interesting。 学科网（北京）股份有限公司 $