Unit2知识点汇总（单词、短语、句型、语法、练习）2025-2026学年沪教版（2024）英语八年级上册
Unit 2 Amazing numbers 神奇的数字
1. The important words, phrases and sentences
① One day, a wise old man came to the palace and the king challenged him to a game.
一天，一位智慧的老者来到王宫，国王向他发起了一局对弈挑战。
② “You can have any prize if you win the game,” The king promised the old man.
国王向老者承诺：“如果你赢得比赛，可以获得任何奖赏。”
③ The old man thought for a moment and said slowly, “If I win the game, I’d like one grain of
rice for the first square of the chessboard, two for the second, four for the third...I’d like you to double the amount for each of the rest of the squares.”
老人思索片刻，缓缓说道：“如果我赢了，我想要棋盘的第一格放 1 粒米，第二格放 2 粒，第三格放 4 粒…… 我要你给剩下的格子上的米粒数都逐次加倍。”
④ Wouldn’t you like gold or silver instead?
你不想要金子或银子吗？
⑤ “No, just rice,” the old man replied without hesitation.
“不，只要大米。”老人毫不犹豫地回答。
⑥ “How many grains of rice will this be?” the king wondered.
“这得需要多少粒米啊？”国王暗自琢磨。
⑦ After thinking about it for a moment, the king agreed.
考虑了一会儿之后，国王便应允了。
⑧ What per cent of the world’s population currently live in Asia?
目前生活在亚洲的人口占世界人口多少比例？
⑨ We need to decide the dates. And then we need to check the train or flight schedule. Also, we
need to make a budget.
我们需要确定日期，然后要查看火车或航班时刻，还得做一个预算。
⑩ Prices have risen sharply over the last few months.
过去几个月，价格大幅上涨。
⑪ The price of rice is going up.
米价在上涨。
⑫ Oil is going down in price.
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石油正在跌价。
⑬ Each “stick” stands for a thing we want to count, such as an animal or a bag of rice.
每一根小棍代表我们想计数的一个东西，比如一头动物或一袋大米。
⑭ Tally sticks are easy to understand, but it can take a long time to write down large numbers.
计数棍很容易明白，但是记大数字需要很长时间。
⑮ Later, people created faster ways of writing numbers. One such system developed in ancient
India.
后来人们发明了更快的计数方法，其中一个计数方法体系发展于古印度。
⑯ Instead of using tally sticks, people began using different abstract symbols to represent
different numbers.
不再使用计数棍，人们开始使用不同的抽象符号来代表不同的数字。
⑰ Researchers do not know exactly how this happened, but some believe that the sticks slowly
turned into symbols over the centuries.
研究人员不是十分清楚这种转变究竟是如何发生的，但是有人认为计数棍逐渐转变成符号的过程历经数百年。
2. Grammar
基数词
【定义】表示数目多少的数词
【注意】
① 英语里没有万、亿这样的单位数词
② 超过1千，由后向前数，每三位数打个逗号。第一个逗号前面的数读作“某千 (thousand)”，第二个
逗号前的数读作“某百万（million)”，第三个逗号前的数读作“某十亿(billion)”
③ hundred，thousand，million等词后不加-s
④ 百位和十位之间加and
⑤ 十位和个位之间加连字符
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35 | thirty-five | |
272 | two hundred and seventy-two | |
| 2， two thousand | 000 |
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| 2， two thousand | 003 and three |
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| 2， two thousand | 021 and twenty-one |
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| 2， two thousand | 234 |
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| 12， twelve thousand | 234 two hundred and thirty-four |
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246， | 234 two hundred and thirty-four | |
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10， ten million | 246， two hundred and forty-six thousand | 234 two hundred and thirty-four |
【拓展】
hundreds of，thousands of，millions of表示：数以百计、千计、百万计。这样用法时，后面需要加-s
e.g.
Thousands of people collect at the square.
序数词
【定义】表示顺序先后的数词
【口诀】
一二三要牢记：first, second, third
八加h，九去e
ve变为f，y要变为i+e
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