Unit 2 Grammar 课件 2025-2026学年沪教版英语八年级上册

By the end of this lesson, students will be able to: sum up the rules of the cardinal and ordinal numbers; use cardinal and ordinal numbers correctly. How many people are there in the lift? Two. Which floor are they going to? The second floor. Which floor are they on now? The sixth floor. 序数词 Ordinal numbers 基数词 Cardinal numbers We use cardinal numbers to count things. We use ordinal numbers to show the order of things. Focus on 基本用法 基数词 Cardinal numbers 0~12为基本单词: zero one two three four five six seven eight nine ten eleven twelve 13-19为对应的个位数单词(或变形)后加-teen: thirteen fourteen fifteen sixteen seventeen eighteen nineteen 基数词的构成 5 20-90的整数为其对应个位数单词(或变形)后加-ty: twenty thirty forty fifty sixty seventy eighty ninety 21~99的两位数,十位与个位之间用连字符“-”。 26 twenty-six 98 ninety-eight 32 thirty-two 99 ninety-nine 100 one hundred When we say thirteen, we stress the second syllable. When we say thirty, we stress the first syllable. http://www.xyybs.com ① 200 ② 308 ③ 550 ④ 649 ⑤ 887 101~999的基数词的表达方式为: 百位数 + hundred (+ and) (+十位数 + “-” ) (+ 个位数) two hundred three hundred and eight five hundred and fifty six hundred and forty-nine eight hundred and eighty-seven 1 , 000 , 000 , 000 1000以上的多位数,从右往左看,每隔三位加一个分节符,倒数第一个分节符之前要用thousand,倒数第二个分节符之前要用million,倒数第三个分节符之前要用billion。 thousand million billion ① 8,265 ② 45,870 ③ 106,780 ④ 3,150,568 ⑤ 200,809,958 ⑥ 6,856,782,951 eight thousand two hundred and sixty-five forty-five thousand eight hundred and seventy one hundred and six thousand seven hundred and eighty three million one hundred and fifty thousand five hundred and sixty-eight two hundred million eight hundred and nine thousand nine hundred and fifty-eight six billion eight hundred and fifty-six million seven hundred and eighty-two thousand nine hundred and fifty-one When we read out numbers, We do not add -s to the words hundred, thousand, million and billion. We use “and” between “hundred” and the tens or units that follow. We do not use “and” in thousand, million, billion. 2,000 591,400 1,700 40,000 4,865 600,000 1,858 40,000 89,541 1,700 2,300 100 小兔子跳到哪个框,你就读哪个框里的词组哦! Rabbit, Jump! Jump! Jump! 1. 基数词在句中可用作主语、表语、宾语和定语。 ① Ten of them are boys. ② He is thirteen (years old). ③ I need three altogether. ④ Four boys are singing outside. 作主语 作表语 作宾语 作定语 基数词的用法 他们中有十个是男孩。 他十三岁。 我总共需要三件。 四个男孩正在外面唱歌。 http://www.xyybs.com 2. 基数词可用于名词之前表示数量。 ① I have three pencils. ② There two dogs in the yard. 3. 基数词可用于名词之后表示顺序。 ① Lesson Five is very easy. ② Please open your books and turn to Page 8. 我有3支铅笔。 院子里有两只狗。 第五课非常简单。 请打开你们的课本,翻到第8页。 4. 基数词可表示年份、时间(钟点)、电话号码、 年龄等。 ① He was born in July, 1998. ② I get up at seven every morning. ③ His telephone number is 88940530. ④ She is 13 years old. 读作:nineteen ninety-eight 他出生于1998年7月。 我每天早上七点起床。 他的电话号码是88940530。 她今年13岁。 年份的读法 1. 一般情况:把四位数年份分成前两位和后两位,分别读出来。 2025 2. 以 00 结尾的年份:一般先读前面两位数,然后加上 hundred。 1900 3. 以 000 结尾的年份:一般先读第一位数,然后加上 thousand。 2000 4. 如果第三位数是数字0,可读成十位数加字母O,再加个位数,也可以直接读成千位数。 2006 twenty twenty-five nineteen hundred two thousand twenty O six 或 two thousand and six Focus on 基本用法 序数词 Ordinal numbers 1) 一般来说,是由相应的基数词加词尾th 构成。 four + th seven + th ten + th fourth seventh tenth 序数词的构成 2) 有些基数词在变为序数词时,有特殊的变化。 one two three five eight nine twelve first third eighth twelfth second fifth ninth 3) 十位整数序数词的构成方法是将基数词的词尾y变成ie,然后再加th。 twenty thirty forty ninety twentieth thirtieth fortieth ninetieth twenty-one thirty-five a hundred and fifty-three 4) 20以上的两位或两位以上的基数词变成序数词时,仅将个位数变成序数词。 twenty-first thirty-fifth a hundred and fifty-third 基变序,很容易, 结尾加上-th (fourth, sixth); 一二三,特殊记, 词尾各是 t, d, d (first, second, third); 八减t (eighth),九去e (ninth), ve要用f替 (fifth, twelfth); 碰到整十位, 将y改为ie再加-th(thirtieth); 若是遇到几十几, 前用基来后用序 (seventy-third)。 Read and learn more. Click on the PUSH button. 1. 序数词主要用作定语,前面通常要加定冠词the。但当序数词作定语修饰名词且前面有形容词性物主代词或名词所有格时,the可以省略。 ① Please look at the first picture. ② She is my first teacher. ③ It's Anna's eighth movie. 序数词的用法 请看第一幅图。 他是我的第一个老师。 这是安娜的第八部电影。 23 2. 序数词用来表示日期。也可以用基数词来表示,但要读作序数词。 National Day is October 1st/1. 国庆节是在十月一日。 3. 编号可以用基数词或序数词来表示。序数词位于名词之前,前面要加定冠词the,而基数词位于名词之后,且名词和基数词的首字母都要大写。 the second part = Part Two S1: Which is the first-longest river in the world? Where is it? How long is it? S2: The Nile River is the first-longest river. It’s in Africa. It’s about 6,671 km long. P26 1 1 Look at the information about the three longest rivers in the world. Take turns asking and answering questions about the rivers. The tallest mountain in ... is ... It is ... metres high. ... is the second-highest mountain in ... P26 2 2 Look at the list of the highest mountains in Asia, North America and Africa. Describe the mountains with cardinal and ordinal numbers. P135 Here is a report about some students’ height. Complete the report with cardinal or ordinal numbers. Spell out the numbers. one hundred and seventy-two third second fourth one hundred and fifty-five one hundred and fifty-eight seventh one hundred and sixty-one 一、基数词表示数量。 1. 基数词在句中可用作主语、表语、宾语和定语。 2. 基数词可用在名词之前表示数量。 3. 基数词用于名词之后表示顺序。 4. 基数词可表示年份、时间(钟点)、电话号码、年龄等。 二、序数词表示顺序。 1. 序数词主要用作定语,前面通常要加定冠词the。 2. 序数词用来表示日期。 3. 编号可以用基数词或序数词来表示。 http://www.xyybs.com 1. There are 30 students in the art club. One third are boys. So, the club has _ girls. (2025甘肃武威) A. 10 B. 20 C. 30 D. 40 2. I knew I couldn't wait. I walked up to the _ person in the line and asked in a low voice, “Excuse me, could I go first? I am not feeling so well.” (2025重庆市) A. first B. second C. third D. fourth I. 单项选择。 3. June is the _ month of a year. (2024甘肃白银) A. fifth B. sixth C. seventh D. eighth 1. Every year, people celebrate World First Aid Day on the _ Saturday in September. (two) (2025云南省) 2. It was the team’s _ (six) win in a row and his _ (two) time winning the _ (one) prize. (2024广东深圳) II. 用括号中所给词的适当形式填空。 second second first sixth 1. Can you work out the rules of cardinal and ordinal numbers? 2. Can you use cardinal and ordinal numbers correctly? 1. Write a short paragraph about goods in supermarket using cardinal and ordinal numbers properly. 2. Preview Speaking part on page 27. $$