Unit 1 The Changing World知识点与考点精练 2026-2027学年人教版英语九年级上册

Unit 1 The Changing World 第一部分 预习导航 学习目标 掌握一般过去时与现在完成时的用法及区别； 掌握 used to 的用法（肯定、否定、疑问）； 学会用 It takes/took + 时间 + to do 表达花费时间； 掌握 with + 名词表条件的用法； 能用英语描述家乡或身边的变化。 学习重点 一般过去时（ago, in 2018 等时间标志词）； 现在完成时（for + 时间段, since + 时间点, already, yet）； used to + 动词原形（过去常常）； must have done 表推测（一定做了……）； the + 比较级，the + 比较级（越……越……）。 学习难点 区分一般过去时（只强调过去）与现在完成时（强调对现在的影响）； used to 与 be used to doing 的区别； for + 时间段 与 since + 时间点的正确使用； make it + adj. + for sb. + to do 形式宾语结构。 第二部分 教材全解 1. He became a good friend of your grandfather about 20 years ago. 译文：大约20年前，他成了你祖父的好朋友。 （1）时态标志：ago（……以前）是一般过去时的典型信号词。 （2）结构公式：主语 + 动词过去式 + 其他成分，时间状语放句末。 （3）词法小贴士：become 的过去式是 became，过去分词仍是 become。 （4）易错提醒：有明确过去时间点（in 2018, yesterday, ago），必须用一般过去时。 即时练习（根据例句及考点，完成句子）： ① My grandpa __________ (work) in that factory when he was young. ② They __________ (build) the new hospital in our town in 2018. ③ She __________ (study) abroad for two years after she left university. 2. They haven't seen each other for ages! 译文：他们好多年没见面了！ （1）时态标志：for + 一段时间是现在完成时的标志性状语。 （2）结构拆解：主语 + have/has + 过去分词（seen 是 see 的过去分词）。 （3）词法辨析：each other 是相互代词，意为“彼此”；for ages 表示“很长时间”。 （4）语境理解：强调“直到现在还没见面”，侧重点是对当前状态的影响。 即时练习（根据例句及考点，完成句子）： ① I __________ (not finish) my homework yet. Please wait. ② She __________ (be) to Beijing three times since 2015. ③ They __________ (know) each other since they were in primary school. 3. When I first visited here, it took half a day to reach the town. 译文：我第一次来这儿时，花了半天时间到达镇上。 （1）句型公式：It takes/took + 时间 + to do sth. 表示“做某事花费……时间”。It 是形式主语，真正主语是不定式。 （2）结构拆解：When 引导时间状语从句，主句用形式主语结构。 （3）词法辨析：reach 是及物动词，直接加地点；arrive 需加 in/at。 （4）易错提醒：take 的主语通常是 it 或事物，不能是人（人用 spend）。 即时练习（填空及句型转换）： ① It took them three hours __________ (finish) the work. ② 我每天花30分钟读英语。→ It __________ me 30 minutes __________ English every day. ③ It took the workers two years to build the bridge.（对划线部分提问） → __________ did it take the workers to build the bridge? 4. Now, with the new roads, it takes only an hour. 译文：现在，有了新公路，（去镇上）只需要一个小时。 （1）介词短语作状语：with + 名词 表示“由于有了…… / 在……的条件下”。 （2）结构拆解：With the new roads（条件状语）+ 主句（it takes only an hour）。 （3）词法活用：with 在此不是“和……一起”，而是“有了……（的帮助）”。 （4）语境理解：强调“新公路”是时间缩短的直接原因。 即时练习（根据例句及考点，完成句子）： ① Now, with the new bridge, it __________ (take) only 10 minutes to cross the river. ② With the development of technology, our lives __________ (become) more convenient. ③ __________ the help of my teacher, I __________ (make) great progress. 5. We used to have to travel far to see a doctor, but now our town has built a new hospital. 译文：我们过去不得不走很远去看病，但现在我们镇上已经建了一家新医院。 （1）核心对比辨析： 　- used to + 动词原形：表示“过去常常（但现在不再）”。 　- have to + 动词原形：表示“不得不”。 　- has built（现在完成时）：强调“已经建成”。 （2）结构拆解：used to have to travel 是双层结构。 （3）词法提醒：have to 的过去式是 had to，但 used to 后接动词原形。 即时练习（根据例句及考点，完成句子）： ① My grandmother used to __________ (live) in the countryside, but now she __________ (live) with us. ② They __________ (build) a new library in our town already. ③ We used to __________ (drink) river water, but now we __________ (have) clean tap water. 6. There used to be sandstorms all the time, and the fields were getting smaller and smaller. 译文：过去一直有沙尘暴，而且田地变得越来越小。 （1）存在句的过去式：There used to be 表示“过去存在……（现在已不复存在）”。 （2）结构拆解：There used to be + 名词。后一分句用过去进行时 were getting。 （3）用法点睛：比较级 + and + 比较级（smaller and smaller）表示“越来越……”。 （4）词法积累：all the time 意为“一直，始终”。 即时练习（根据例句及考点，完成句子）： ① There used to __________ (be) many fish in this river, but now hardly any. ② The weather is getting __________ and __________ (cold) these days. ③ My English is getting __________ and __________ (good) because I practise every day. 7. Many young people used to work in big cities. Now, more of them have come back to live and work here. 译文：许多年轻人过去……工作在大城市。现在，他们中更多人已经回来在这里生活和工作了。 （1）时态对比表变化：第一句用 used to 描述过去，第二句用 have come back（现在完成时）强调“已经回来”。 （2）结构拆解：more of them 意为“他们当中的更多人”。come back 后接不定式作目的状语。 （3）语境理解：从“离乡打工”到“回乡发展”的转折趋势。 即时练习（根据例句及考点，完成句子）： ① In the past, people __________ (use) horses. Now, cars __________ (become) very common. ② Many students used to __________ (play) outside, but now they __________ (spend) more time on studies. ③ My hometown __________ (change) a lot in the last five years. 8. The new highway and railway must have helped a lot! 译文：新公路和铁路一定帮了大忙！ （1）情态动词表推测：must have + 过去分词 表示对过去发生的动作进行很有把握的肯定推测。 （2）结构拆解：主语（并列结构）+ must have helped（推测性谓语）+ a lot（程度状语）。 （3）语境理解：看到家乡的积极变化，推断交通设施起了重要作用。 （4）易错提醒：must 表推测的否定形式是 can't / couldn't have done。 即时练习（根据例句及考点，完成句子）： ① The ground is white. It __________ (snow) last night. ② She looks tired. She __________ (stay) up late yesterday. ③ He knows the city well. He __________ (live) here for a long time. 9. This makes it difficult for locals to bring products to the market or to develop industry. 译文：这使得……很难让当地人把产品带到市场上或发展工业。 （1）形式宾语结构：make + it + 形容词 + for sb. + to do sth.，it 是形式宾语。 （2）结构拆解：This + makes + it + difficult + for locals + to bring...or to develop...。 （3）词块积累：bring products to the market（把产品推向市场）；develop industry（发展工业）。 即时练习（填空及汉译英）： ① The new policy makes __________ easier for farmers __________ (sell) their products online. ② 良好的教育使孩子们更容易找到好工作。→ Good education makes __________ easier __________ children _______________ good jobs. ③ The bad weather made it difficult for the plane __________ (take) off on time. 10. The more we practise, the better we learn. 译文：我们越……越多练习，就越好学。 （1）比较级句型：the + 比较级，the + 比较级 表示“越……，就越……”。 （2）结构拆解：The more 修饰 practise；the better 修饰 learn。 （3）记忆口诀：“越努力，越幸运”即 The harder you work, the luckier you will be。 （4）词法要点：practise 后接动名词（practise doing）。 即时练习（填空及汉译英）： ① 你吃得越多，你就越胖。→ ___________________ you eat, ___________________ you will become. ② 我们说的英语越多，口语越好。→ __________________ English we speak, __________________ our spoken English will be. ③ The __________ (careful) you do your homework, the __________ (few) mistakes you'll make. 11. Now that I am older, my life is different from when I was in primary school. 译文：既然我长大了，我的生活与……不同于小时候了。 （1）原因状语从句：Now that 引导原因状语从句，意为“既然，由于”。 （2）结构拆解：Now that I am older（原因从句）+ 主句 my life is different from when I was in primary school。 （3）用法点睛：be different from 意为“与……不同”，from 后接 when 引导的宾语从句。 （4）词法辨析：now that 与 since 意思相近，但 now that 更侧重于“时间变化导致的结果”。 即时练习（根据例句及考点，完成句子）： ① Now that you __________ (finish) your homework, you can go out. ② My life now is very different from __________ (that) in the past. ③ Now that we __________ (have) enough money, we can buy a car. 12. It's amazing how much we have achieved together. 译文：令人惊叹的是，我们在一起已经取得了多少成就。 （1）主语从句后置：It 作形式主语，真正主语是 how much we have achieved together。 （2）结构拆解：It（形式主语）+ 's amazing + how much we have achieved together（主语从句）。 （3）语境理解：表达对共同努力成果的感慨。 （4）词法积累：achieve 意为“（经努力）取得”。 即时练习（填空及汉译英）： ① It's incredible how fast he __________ (improve) his English since last year. ② 我们在一起取得了多么大的成就，真令人惊喜。→ _____________ amazing __________ much we _______________ together. ③ It's surprising how many people __________ (come) to help us. 第三部分 过关检测（20分钟） 满分：100分 一、用所给词的正确形式填空（每题4分，共40分） 1. My grandfather __________ (work) in that factory when he was young. 2. I __________ (not finish) my homework yet. Please wait. 3. She __________ (be) to Shanghai three times since 2018. 4. They __________ (build) a new bridge in our town already. 5. We used to __________ (drink) water from the well, but now we have tap water. 6. It __________ (take) us two hours to reach the village yesterday. 7. There used to __________ (be) a big tree in front of our house. 8. The ground is wet. It __________ (rain) last night. 9. My hometown __________ (change) a lot in the last ten years. 10. Now that we __________ (have) enough time, we can finish the work. 二、句型转换（每题5分，共30分） 11. She used to live in a small village.（改为否定句） → She ________________________ live in a small village. 12. They have already finished the work.（改为否定句） → They __________ finished the work __________. 13. It took them three hours to clean the room.（对划线部分提问） → __________________ did it take them to clean the room? 14. There used to be a big tree in front of our house.（改为一般疑问句） → __________________________ to be a big tree in front of your house? 15. He has lived here for five years.（对划线部分提问） → ___________________ has he lived here? 16. They have already finished the work.（改为一般疑问句） → __________ they __________ the work yet? 三、完成句子（汉译英，每题5分，共30分） 17. 我每天花20分钟读英语。→ It __________ me 20 minutes __________________ English every day. 18. 我们过去不得不走很远去看医生。→ We ___________________________________ travel far to see a doctor. 19. 既然你已经完成了作业，你可以看电视了。→ ___________________ you have finished your homework, you can watch TV. 20. 我们在一起取得了这么多成就，真是令人惊叹。→ __________ amazing __________ much we _________________ together. 21. 这个地区过去被沙子覆盖。→ This area __________________________________ with sand. 22. 练习得越多，你学得就越好。→ __________________ you practise, _________________ you will learn.Unit 1 The Changing World 一、教材全解·即时练习答案 句子1：① worked　② built　③ studied 句子2：① haven't finished　② has been　③ have known 句子3：① to finish　② takes; to read　③ How long 句子4：① takes　② have become / are becoming　③ With; have made 句子5：① live; lives　② have built　③ drink; have 句子6：① be　② colder; colder　③ better; better 句子7：① used; have become　② play; spend　③ has changed 句子8：① must have snowed　② must have stayed　③ must have lived 句子9：① it; to sell　② it; for; to find　③ to take 句子10：① The more; the fatter　② The more; the better　③ more carefully; fewer 句子11：① have finished　② that　③ have 句子12：① has improved　② It is; how; have achieved　③ have come 二、过关检测答案 第一大题（用所给词的正确形式填空）： 1. worked　2. haven't finished　3. has been　4. have built　5. drink 6. took　7. be　8. must have rained　9. has changed　10. have 第二大题（句型转换）： 11. didn't use to　12. haven't; yet　13. How long 14. Did there use　15. How long 16.Have;finished 第三大题（完成句子/汉译英）： 17. takes; to read　18. used to have to 19. Now that　20. It's; how; have achieved 21. used to be covered　22. The more; the better 学科网（北京）股份有限公司 $