Unit 4 语法素养练习 2025-2026学年人教版八年级英语下册

该初中英语Unit 4语法素养练习卷系统整合形容词与副词比较等级及大数字表达核心内容，通过“语法导航”梳理原级、比较级、最高级“三级跳”结构及倍数、特殊句式，搭建从考点速记到基础夯实、能力提升、读写综合的阶梯式学习支架。 清单以分类分级构建知识体系，“三级跳”表格明确比较等级结构、必背考点与易错点，大数字部分细化位数规则与具体/模糊数字用法，培养学生语言能力和思维品质。设计分层练习，如基础题考查比较级形式变化，读写综合题结合Hyperloop主题短文融合语法点，助力学生高效掌握，教师可依此精准设计教学活动。

Unit 4 语法素养练习卷 主题：形容词与副词的比较等级 & 大数字表达 【语法导航】核心考点速记 1. 形容词与副词的“三级跳” 等级 核心结构 必背考点与易错点 原级​ as + adj/adv + as not so/as...as 表示“和...一样”或“不如”。 Practice is as important as​ theory. 比较级​ A + 比较级 + than + B 比较级 + and + 比较级 The + 比较级..., the + 比较级... 1. 越来越...：It's getting colder and colder. 2. 越...越...：The harder​ you work, the luckier​ you get. 3. 两者择一：Who runs faster, you or Tom? 最高级​ the + 最高级 + in/of one of the + 最高级 + n.(pl) 1. 最高级前必须加 the（副词最高级可省）。 2. 前有物主代词（my, his）时，不加 the：He is my best​ friend. 2. 倍数与特殊句式 • 倍数表达：A + be + 倍数 + as + adj + as + B This room is three times as big as that one. • “比任何其他都...”：比较级 + than + any other + 单数名词（同一范围） China is larger than any other country in Asia. 3. 大数字 (Big Numbers) • 位数：百 (hundred) → 千 (thousand) → 百万 (million) → 十亿 (billion)。 • 规则： 1. 具体数字后，不加 s，不加 of：five hundred books。 2. 模糊数字（概数），加 s，加 of：hundreds of books。 3. 万 = ten thousand；亿 = a hundred million。 4. 长、宽、高：基数词 + 单位词 + 形容词 (a 20-meter-long river)。 Part 1 基础夯实 (Basic Practice) 一、用括号内所给单词的适当形式填空（含不规则变化）。 1. The Amazon Rainforest is much ______ (large) than any other forest in South America. 2. Among all the subjects, Physics is ______ (difficult) for me, but I try my best. 3. With the help of AI, our life is getting ______ and ______ (convenient). 4. This is the ______ (two) time I have visited the Palace Museum. It is still amazing. 5. The Yellow River is the second ______ (long) river in China. 6. — Which is ______ (heavy), an elephant or a tiger? — An elephant, of course. 7. My brother runs ______ (quick) than me, but I jump ______ (high) than him. 8. The more you read, ______ (wise) you will become. 二、句型转换（每空一词）。 9. This problem is very serious. (用“比较级+and+比较级”改写) This problem is getting ______ ______ ______. 10. He is taller than any other student in his class. (改为同义句) He is ______ ______ ______ in his class. 11. The population of Shanghai is larger than that of Xi'an. (改为选择疑问句) ______ city has ______ ______ _____ , Shanghai or Xi'an? 12. Tom is 1.75 meters tall. Jack is 1.75 meters tall. (合并为一句) Tom is ______ tall ______ Jack. Part 2 能力提升 (Skill Improvement) 三、用所给单词的适当形式填空。 square, deep, wide, high, amazing 13. The Bund in Shanghai is famous for its ______ views of modern buildings. 14. The well （井）is about 20 meters ______. It is dangerous for kids to play near it. 15. The new road is three times ______ than the old one. 16. Mount Everest is the ______ mountain in the world. 17. We need a ______ piece of paper to draw the map. 四、大数字表达与翻译。 18. 这个数字用英语怎么说：805,000 ___________________________________________________________________________ 19. 这个数字用英语怎么说：12,345,678 ___________________________________________________________________________ 20. 翻译句子：这座桥大约有三百米长。 The bridge is about ______ ______ ______ _____. 21. 翻译句子：中国有成千上万的历史古迹。 China has ______ ______ historical sites. 22. 翻译句子：长江是世界第三长的河流。 The Yangtze River is ______ ______ ______ river in the world. Part 3 读写综合 (Integrated Skills) 五、短文填空 The Hyperloop is a new type of transportation. It is designed to be much 23. ______ (fast) than traditional trains. While a normal high-speed train travels at about 350 kilometers per hour, the Hyperloop can reach speeds of over 1,000 kilometers per hour. That is nearly three 24. ______ (time) as fast as the fastest bullet train in China! The pod (舱体) travels through a low-pressure tube. Inside the tube, the air is 25. ______ (thin) than outside, which makes the ride 26. ______ (smooth) and quieter. Compared to airplanes, the Hyperloop is 27. ______ (environmental) because it uses clean energy. Imagine traveling from Beijing to Shanghai in just one hour! The distance is about 1,200 28. ______ (kilometer). The Hyperloop makes this possible. The engineers say the technology is becoming 29. ______ and ______ (safe). They have tested it many times. The 30. ______ (one) public test was successful last year. Now, they are building a longer track. The 31. ______ (long) the track, the 32. ______ (great) the challenge. But if they succeed, it will be one of 33. ______ (exciting) inventions of the century. It is 34. ______ (easy) to travel long distances than ever before. We can go almost anywhere in a short time. The future of travel is 35. ______ (certain) faster and more comfortable. 参考答案 Part 1 1. larger 2. the most difficult 3. more and more convenient 4. second 5. longest 6. heavier 7. more quickly; higher 8. the wiser Part 2 9. more and more serious 10. the tallest student 11. Which; a larger population 12. as; as Part 3 13. amazing 14. deep 15. wider 16. highest 17. square Part 4 18. eight hundred and five thousand 19. twelve million, three hundred and forty-five thousand, six hundred and seventy-eight 20. three hundred meters long 21. thousands of 22. the third longest Part 5 23. faster 24. times 25. thinner 26. smoother 27. more environmental 28. kilometers 29. safer；safer 30. first 31. longer 32. greater 33. the most exciting 34. easier 35. certainly 学科网（北京）股份有限公司 $