Unit 2 Amazing Numbers：Section 2Grammar课件 2025-2026学年沪教版（2024）八年级英语上册

Revision Talk about the students’ height in your group. I’m 163 centimetres tall. My desk mate David is 165 centimetres tall. Frank is 175 centimetres tall. He is the tallest in our group. Lucy is 150 centimetres tall. Revision Talk about the height. one hundred and seventy-two third second fourth one hundred and fifty-five one hundred and sixty-one seventh one hundred and fifty-eight Try to write down the numbers. Let’s sum up the rules! We (add / do not add) -s to the words hundred, thousand, million and billion. We use_________ between hundred and ten. and The library has hundreds of books on ancient history. Thousands of people gathered in the square to celebrate the event. Compare Let’s sum up the rules! When we want to show that a number is large, we can use hundreds of and thousands of. Let’s sum up the rules! We form most ordinal numbers by adding _____ to the cardinal numbers, except first, second and third. For numbers of 21 and above, the ordinal number is formed based on the (first/last) digit. -th Who is he/ she? Try to use numbers to describe a person in your class. Let others guess who he / she is. Example: She is 13 years old. She is 155 cm tall. She sits in the fifth row. She got the first prize in this year’s speaking competition. School activities Look at the list of school events. Ask and answer questions about them. Example: S1: When was the Tree Planting Day? S2: It was on 12 March. S1: How many students took part in the activities? S2: 893 students took part. Date Activities Participants 12 March Tree Planting Day 893 23 April Book Fair 559 9 May Sports Meeting 1084 17 June Camping Day 246 10 July City Tour and Treasure Hunt 129 S1: Which is the second-longest river in the world? Where is it? How long is it? S2: The Amazon River is the second-longest river. It’s in South America. It’s about 6,480 km long. S1: Which is the third-longest river in the world? Where is it? How long is it? S2: The Yangtze River is the third-longest river. It’s in Asia. It’s about 6,300 km long. The tallest mountain in Asia Mt. Qomolangma. Mt. Qogir is the second-highest mountain in Asia. The tallest mountain in North America is 6,190 metres high. Mt. Logan is the second-highest mountain in North America. The tallest mountain in Africa is 5,895 metres high. Mt. Stanley is the third-highest mountain in Africa. The ________(five) lesson is very interesting. December is the ________(twelve) month of the year. Two ________(third) of the students in our class are going to the summer camp. The old lady will celebrate her _________(hundred) birthday on 15 December. The ________(one) prize is a new bicycle. Our classroom is on the ________(two) floor. Who do you think is the greatest writer of the ___________(twenty-one) century? The computer is one of the greatest inventions in the ________(twenty) century. His books are read by ________(million) of people every year. More practice 用括号中所给词的适当形式填空。 fifth twelfth thirds hundredth first second twenty-first twentieth millions More practice 读短文，并在横线处用英语写出对应的数字。 A Big Number Challenge at School Last week, our English teacher, Mr Li, gave us a special challenge. He said, “Who can write the biggest number in English?” We all started thinking. I wrote down the number 1,234,567. I said, “________________________ ____________________________________________.” My friend Tom wrote 8,900,000. He said, “______________________________.” We were all very excited. Then Mr Li wrote a number on the blackboard: 23,456,789. He asked us to read it. I raised my hand and said, “_________________________________________________________________________.” Mr Li smiled and said, “Very good!” Next, Mr Li asked us to solve a maths problem. He said, “If you have 3,456 apples and you give away 1,234 apples, how many apples do you have left?” I did the maths and wrote, “__________________________________ apples.” At the end of the class, Mr Li told us a fun fact. He said, “Did you know that the Earth is about 4,543,000,000 years old?” We all said, “Wow!” I wrote it as “_______________________________________ years old”. This English class was really interesting. I learned how to write big numbers in English and had fun with my classmates. One million two hundred and thirty-four thousand five hundred and sixty-seven Eight million nine hundred thousand Twenty-three million four hundred and fifty-six thousand seven hundred and eighty-nine Two thousand two hundred and twenty-two four billion five hundred and forty-three million 评价内容 评分（1—5） 1. 我能用英文说出万亿以内的数字。 1 2 3 4 5 2. 我能将基数词变成序数词并准确读出。 1 2 3 4 5 3. 我能运用基数词和序数词谈论生活中的数字。 1 2 3 4 5 Self-assessment Homework 基础作业 1. 熟练朗读课本第25页的基数词和序数词。 2. 完成练习册中语法板块的练习。 拓展作业 选择你身边的一个人，可以是你的父母、老师、朋友等，运用尽可能多的数字描述他们，例如身高、年龄、人生经历相关的数字等。 14 $$