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课件网) 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 twelft ... ...
