Unit 6 Grammar and Writing Numerals 数词 (1) 小数（Decimals） 0.5 → "zero point five" 或直接 "point five" 3.14 → "three point one four" 注意：英语中小数点后的数字需逐个读出，不可连读（如不读作 "three point fourteen"）。 (2)百分数（Percentages） 25% → "twenty-five per cent"- 100% → "one hundred per cent" 百分数作主语时，动词单复数由其后名词决定： 50% of the students are present. / 50% of the water is polluted. (3)分数（Fractions） **1/2** → "one half" **1/3** → "one third" **5/8** → "five eighths" **3/4** → "three quarters" 或 "three fourths" 特殊规则： 分子 >1 时，分母用复数形式（如 **two fifths**，非 "two fifth"）。 口语中常用 "a quarter"（1/4）和 "a half"（1/2） Add three quarters of a cup of sugar. (4)基数词（Cardinal Numbers）** one two three ...ten ... one thousand（一千） one million（一百万） 注意： 英语中没有“万”单位，需用 "ten thousand" 表示（如 50,000 → "fifty thousand"）。 (5)序数词（Ordinal Numbers）** first second third 4th–20th → 后 缀 均 为 "-th"（ 如 fourth, twentieth） 21st → " twenty-first" 用途：日期、排名、楼层等。 语法规则: 序数词前通常加定冠词 the **详见书 P127-128** 1. take a measurement 进行测量 2. show a specific amount 显示特定数量 3. make something easier to understand 使事情更容易理解 4. currently= at present= for the moment 目前，现在 5. a coast redwood 一片海岸红杉 6. Introduce the plane tree to your classmate 向你的同学介绍悬铃木 7. leaf length 叶子长度 trunk width 树干宽度 8. up to around 1.3 metres 达到约 1.3 米 （up to + 数字） E. g. The plane tree can grow up to 40 metres tall. 9. a blog post about... 关于...的一篇博客文章 10. do my part to ... 尽我所能 11. give out flyers 分发传单 12. Planting trees is tiring, because it takes time and energy. 植树很疲惫因为它耗时耗精力。 The job of planting trees is tiring. = I am tired of planting trees. 13. After planting my first tree, I promised myself that I would never waste any paper again. 种 完我的第一棵树之后，我对自己承诺将再也不浪费任何纸了。 v.用法：promise to do/ promise not to do/ promise(that) + 从句... （承诺做某事） n.用法：make a promise 许下承诺/ keep a promise 遵守承诺/ break a promise 违背承诺 14. A blog is like a public diary. 博客就像是一个公众的日记。 15. share experiences,thoughts,feelings and opinions with others 与他人分享经历、想法、感受 和观点 Thoughts about trees: ...because trees keep us cool in the sun. ...because trees make our neighbourhoods quieter. 更安静的 ...because trees help fight climate change. ...because trees stop soil from washing away. 阻止水土流失 Decisions and suggestions: After seeing the beauty of a small forest, I decided to spread awareness about the benefits of trees to others. 在看到一片小树林的美丽之后，我决定向其他人宣传树木的好处。 We can plant more trees and create a healthier environment for everyone. 我们可以种植更 多的树木，为每个人创造一个更健康的环境。 We can clean up parks and forests to make them better homes for trees and animals. 我们可 以清理公园和森林，使它们成为树木和动物更好的家园。 We can re ... ...
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