Unit 2 Amazing numbers Checking your progress Project 同步练习2026-2027学年沪教版英语八年级上册

**基本信息** 本练习以“词汇-句型-语篇”递进为核心，分层覆盖基础认知、技能应用与综合拓展，通过梯度设计夯实语言能力，提升思维品质与学习能力。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础认知|词形转换、重点短语|直接考查词汇变形与固定搭配，夯实语言基础| |技能应用|词/短语填空、句型转换|语境中运用词汇语法，提升分析与表达能力| |综合拓展|语篇填空、补全对话|语篇理解与交际应用，培养综合语言运用能力|

沪教版（新教材）初中英语八年级上册 Unit 2 Amazing numbers Checking your progress (Project)同步练习 一、词形转换 1. billion ________(复数) 2. accurate ________(n.准确性) 3. divide ________(过去式) 4. multiply ________(n.乘法) 5. number ________(adj.数字的；编号的) 6. population ________(adj.人口的) 7. round ________(adj.整数的；四舍五入的) 8. total ________(adv.总共；完全地) 9. increase ________(n.增长；增加) 10. reduce ________(n.减少；降低) 二、用所给词的适当形式填空 1. The ________(billion) of stars in the sky are hard to count. 2. We need to get ________(accurate) data for the research. 3. He ________(divide) the cake into eight equal parts yesterday. 4. ________(multiply) is one of the basic math operations. 5. The ________(number) system we use today is based on 10. 6. The ________(population) of this city has grown by 10% in five years. 7. Please give me a ________(round) number instead of a decimal. 8. ________(total), there are 50 students in our class. 9. The ________(increase) in temperature has caused many problems. 10. We should take action to slow down the ________(reduce) of forest areas. 三、重点短语 1. 数十亿的 ________________ 2. 四分之三 ________________ 3. 增长了百分之十 ________________ 4. 四舍五入 ________________ 5. 总数为 ________________ 6. 被分成 ________________ 7. 准确数据 ________________ 8. 人口增长 ________________ 9. 减少污染 ________________ 10. 乘法运算 ________________ 四、用所给短语的适当形式填空 billions of, three quarters, increase by 10%, round off, add up to, be divided into, accurate data, population growth, reduce pollution, multiplication operation 1. ______________ people live in Asia. 2. ______________ of the earth's surface is covered by water. 3. The city's population has ______________ in the past decade. 4. You can ______________ the number to the nearest hundred. 5. All the numbers ______________ 100 exactly. 6. The task ______________ five small parts for us to finish easily. 7. We need ______________ to make a correct decision. 8. Too fast ______________ brings many challenges to the city. 9. Everyone should do something to ______________. 10. ______________ is more difficult for primary students than addition. 五、按要求完成句子 increase, reduce, accurate, divide, round, total 1. The company's sales ______________ by 15% last year. 2. We must ______________ the use of plastic bags to protect the environment. 3. It's important to collect ______________ information for the report. 4. The teacher ______________ the class into four groups. 5. Please ______________ this number to the nearest ten. 6. ______________, these books cost me 200 yuan. 六、句型转换 1. About 70 percent of the earth is covered with water.（改为同义句） About ______________ of the earth is covered with water. 2. The population of this town was 10,000 in 2020.（用since 2020改写句子，补充人口增长至12,000） The population of this town ______________ to 12,000 since 2020. 3. We can reduce waste by recycling.（对划线部分提问） ______________ we reduce waste? 4. People divide the cake into six pieces.（改为被动语态） The cake ______________ into six pieces. 5. Have you ever counted the stars in the sky?（作否定回答） ____________, ____________. 七、改错（每句一处错误，划出并改正） 1. There have billion of birds migrating to the south every winter. ____________________________________________________________________ 2. Three quarter of the students in our class are girls. ____________________________________________________________________ 3. The population of the city has increased 5% since 2018. ____________________________________________________________________ 4. Please round down the number to nearest thousand. ____________________________________________________________________ 5. We need collect accurate data for our project. ____________________________________________________________________ 八、重点句子翻译 1. 地球上大约有70%的表面被水覆盖。 ____________________________________________________________________ 2. 中国的人口已经超过14亿。 ____________________________________________________________________ 3. 我们应该把蛋糕分成八等份。 ____________________________________________________________________ 4. 这个城市的人口在过去十年里增长了12%。 ____________________________________________________________________ 5. 请把这个数字四舍五入到最接近的百位。 ____________________________________________________________________ 6. 减少塑料使用有助于降低污染。 ____________________________________________________________________ 九、语篇填空 阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整。每空限填一词，每词限用一次。 billion, accurate, increase, reduce, divide, round, round, total, population, operation Numbers play an important role in our daily life. There are about 7.8 ____________ people living on the earth now. The ____________ of developing countries is growing faster than that of developed ones. To get ____________ information about the world, we often use different math ____________. For example, we can ____________ the data to make it easier to read. If a number is 1,234, we can ____________ it off to 1,200. In many countries, the amount of waste has ____________ by 20% in recent years. We must take action to ____________ waste. We can ____________ waste into recyclable and non-recyclable parts. ____________, these efforts will help us build a better world. 十、补全对话 根据下面的对话情景，在每个空白处填上一个恰当的句子，使对话的意思连贯、完整。 A: Do you know how many people there are in the world now? B: No, I don't. 1. ________________________? A: It's about 7.8 billion. B: Wow, that's a huge number! 2. ________________________? A: China has the largest population, with over 1.4 billion people. B: 3. ________________________? A: Yes, the world's population is increasing very fast. It may reach 10 billion by 2050. B: That's really worrying. 4. ________________________? A: We can reduce population growth by promoting family planning and improving education. B: 5. ________________________. We should also do our part to protect the environment. 参考答案 一、词形转换 1. billions 2. accuracy 3. divided 4. multiplication 5. numerical 6. populational 7. round 8. totally 9. increase 10. reduction 二、用所给词的适当形式填空 1. billions 2. accurate 3. divided 4. Multiplication 5. numerical 6. population 7. round 8. Totally 9. increase 10. reduction 三、重点短语 1. billions of 2. three quarters 3. increase by 10% 4. round off 5. add up to 6. be divided into 7. accurate data 8. population growth 9. reduce pollution 10. multiplication operation 四、用所给短语的适当形式填空 1. Billions of 2. Three quarters 3. increased by 10% 4. round off 5. add up to 6. is divided into 7. accurate data 8. population growth 9. reduce pollution 10. Multiplication operation 五、按要求完成句子 1. increased 2. reduce 3. accurate 4. divided 5. round 6. Totally 六、句型转换 1. seven tenths 2. has increased 3. How can 4. is divided 5. No; I haven't 七、改错 1. billion → billions（billions of是固定搭配） 2. quarter → quarters（分数中分母大于1用复数） 3. increased后加by（增长幅度用increase by） 4. to后加the（round to the nearest是固定搭配） 5. need后加to（need to do sth.是固定结构） 八、重点句子翻译 1. About 70 percent of the earth's surface is covered with water. 2. China's population has exceeded 1.4 billion. 3. We should divide the cake into eight equal parts. 4. The population of this city has increased by 12% in the past decade. 5. Please round off this number to the nearest hundred. 6. Reducing plastic use helps reduce pollution. 九、语篇填空 1. billion 2. population 3. accurate 4. operations 5. round 6. round 7. increased 8. reduce 9. divide 10. Totally 十、补全对话（参考合理答案） 1. How many people are there exactly 2. Which country has the largest population in the world 3. Is the world's population increasing fast 4. What can we do to slow down population growth 5. That makes sense 学科网（北京）股份有限公司 $