Unit6语法讲解及习题：数词（Numerals）-2025-2026学年沪教版英语（五四学制）七年级下学期

沪教英语（五四学制）七下Unit6语法讲解及习题 数词（Numerals） 一、语法知识点详解 1. 定义与功能 数词是表示数量、顺序、时间等的词，在本单元“树木”主题中，常用来描述森林面积、树木高度、年龄等具体数据，让信息更精准。 2. 分类与用法 （1）基数词（Cardinal Numbers） 表示数量：one, two, three, ..., ten, hundred, thousand, million, billion 大数表达： 百位数：two hundred and fifty (250) 千位数：five thousand, three hundred and twenty (5,320) 百万/十亿：six point seven million (6.7 million / 6,700,000) 小数表达：116.07 → one hundred and sixteen point zero seven 百分数表达：17% → seventeen per cent 分数表达： 分子用基数词，分母用序数词：1/5 → one fifth 分母大于1时用复数：3/4 → three fourths / three quarters （2）序数词（Ordinal Numbers） 表示顺序：first (1st), second (2nd), third (3rd), fourth (4th), ..., tenth (10th) 例：The Amazon Rainforest is the largest (最大的) rainforest in the world. 3. 核心考点 hundred/thousand/million：前面有具体数字时不加-s；表示泛指“数百/千/百万”时，加-s并接 of。 例：two hundred trees (200棵树)；hundreds of trees (成百上千棵树) 分数/小数/百分数在句中作主语时，谓语动词的单复数由后面的名词决定。 例：Three fourths of the forest (森林的四分之三) is (是) protected. 例：Three fourths of the trees (树木的四分之三) are (是) healthy. 二、练习题 将下列数字写成英文 1. 6.7 → ___________ 2. 31% → ___________ 3. 100 → ___________ 4. 1/5 → ___________ 5. 3/4 → ___________ 6. 4,800 → ___________ 7. 116.07 → ___________ 8. 17% → ___________ 9. 250 → ___________ 10. 5,320 → ___________ 用括号内数字的正确形式填空 11. The Amazon Rainforest covers about ___________ (6.7 million) square kilometres. 12. Forests cover about ___________ (31%) of the Earth's land area. 13. There are over ___________ (100) lakes in the Jiuzhaigou Valley. 14. The Amazon Rainforest contains ___________ (1/5) of the world's liquid fresh water. 15. More than ___________ (3/4) of all people outside cities live near forests. 16. The tallest tree reached ___________ (116.07) metres in 2019. 17. The oldest tree is over ___________ (4,800) years old. 18. About ___________ (17%) of the Amazon Rainforest was destroyed. 19. There are ___________ (hundred) of trees in the park. 20. The plane tree can grow up to ___________ (40) metres tall. 单项选择 21. The Amazon Rainforest covers about ___________ square kilometres. A. six point seven million B. six million seven hundred C. six millions seven hundred D. six point seven millions 22. ___________ of the students in our class are from China. A. Three fourth B. Three fourths C. Three four D. Three fours 23. There are ___________ students in the school hall. A. two hundreds B. two hundred C. two hundreds of D. hundred of 24. The tree is ___________ tall. A. forty metre B. forty metres C. forty-metre D. forty-metres 25. About ___________ of the Earth's surface is covered with water. A. three-fourth B. three-fourths C. three-four D. three-fours 26. The population of the city is about ___________. A. five million B. five millions C. five million of D. five millions of 27. He bought ___________ books from the bookstore. A. two hundred B. two hundreds C. two hundred of D. two hundreds of 28. ___________ of the land in this area is covered with forests. A. Two third B. Two thirds C. Two three D. Two threes 29. The river is ___________ long. A. five point six kilometre B. five point six kilometres C. five point six-kilometre D. five point six-kilometres 30. There are ___________ people in the park on weekends. A. hundred B. hundreds C. hundred of D. hundreds of 翻译句子 31. 亚马逊雨林覆盖了大约670万平方公里。 _____________________________________________________________________ 32. 森林覆盖了地球陆地面积的大约31%。 _____________________________________________________________________ 33. 九寨沟有超过100个湖泊。 _____________________________________________________________________ 34. 这棵树的高度达到了116.07米。 _____________________________________________________________________ 35. 超过四分之三的人住在森林附近。 _____________________________________________________________________ 三、参考答案与解析 将下列数字写成英文 1. six point seven 2. thirty-one per cent 3. one hundred 4. one fifth 5. three fourths / three quarters 6. four thousand eight hundred 7. one hundred and sixteen point zero seven 8. seventeen per cent 9. two hundred and fifty 10. five thousand three hundred and twenty 用括号内数字的正确形式填空 11. six point seven million 12. thirty-one per cent 13. one hundred 14. one fifth 15. three fourths / three quarters 16. one hundred and sixteen point zero seven 17. four thousand eight hundred 18. seventeen per cent 19. hundreds 20. forty 单项选择 21. A. six point seven million 22. B. Three fourths 23. B. two hundred 24. B. forty metres 25. B. three-fourths 26. A. five million 27. A. two hundred 28. B. Two thirds 29. B. five point six kilometres 30. D. hundreds of 翻译句子 31. The Amazon Rainforest covers about six point seven million square kilometres. 32. Forests cover about thirty-one per cent of the Earth's land area. 33. There are over one hundred lakes in the Jiuzhaigou Valley. 34. The height of this tree reached one hundred and sixteen point zero seven metres. 35. More than three fourths of people live near forests. ( 1 ) 学科网（北京）股份有限公司 $