Unit2 Numbers 课时3 语法-【宝典训练】2023-2024学年八年级上册英语高效课堂课件(沪教牛津版)

Unit 2　Numbers 课时3 语法 目 录 01 课时精讲 02 课时过关 01 课时精讲 语法精讲 本单元重点介绍基数词、序数词和简单的数字运算。 基数词和序数词 1．基数词表数量，后接可数名词； 序数词表顺序，前面须加the，但当序数词前面有形容词性物主代词或所有格修饰时，不加the。 如：three days the third day Tom's third birthday 2．序数词的构成，基数词变序数词的规律是在基数词后加-th，有些有特殊变化，分别是： one two three four five six seven eight nine ten first second third fourth fifth sixth seventh eighth ninth tenth 第 ‹#› 页 课时3 语法 返回目录 * 加粗部分为易错数字，注意写法。 (口诀：一、二、三特殊记，词尾字母t、d、d；八去t；九减e；f换ve；遇到整十数词，y变ie；遇到几十几，只变个位。) twelve twenty twenty-one twenty-two twenty-three thirty forty ninety hundred twelfth twentieth twenty-first twenty-second twenty-third thirtieth fortieth ninetieth hundredth 第 ‹#› 页 课时3 语法 返回目录 3．编码时都可用，要注意写法的不同。 如：Page One ＝ the first page World War Ⅰ＝ the First World War Part Two ＝ the second part 第 ‹#› 页 课时3 语法 返回目录 基数词的习惯用法 1．表确切的数据：数词 ＋ hundred/thousand/million/billion ＋ 名词复数 如：六百本书 six hundred books; 几百万人 several million people 2．表大概的数目：hundreds/thousands/millions/billions of ＋ 名词复数 如：数百本书 hundreds of books 第 ‹#› 页 课时3 语法 返回目录 3．次数、倍数的表达，如：once, twice, three times, many times 4．分数的表达：分子用基数词，分母用序数词，分子大于1时，分母上的序数词用复数。 如：one fifth，two thirds，a half ＝ one second, a quarter ＝ one fourth 第 ‹#› 页 课时3 语法 返回目录 数字运算的表达 如： 9＋3＝12 Add 9 and 3, and you can get 12. ＝ 9 plus 3 is/equals 12. ＋ plus; Add…and… － minus; Subtract…from… × times/multiplied by; Multiply…by… ÷ divided by; Divide…by… 第 ‹#› 页 课时3 语法 返回目录 9－3＝6 Subtract 3 from 9, and you can get 6. ＝ 9 minus 3 is/equals 6. 9×3＝27 Multiply 9 by 3, and you can get 27. ＝ 9 times/multiplied by 3 is/equals 27. 9÷3＝3 Divide 9 by 3, and you can get 3. ＝ 9 divided by 3 is/equals 3. 第 ‹#› 页 课时3 语法 返回目录 惯用语 at first 起初 　　first of all 首先 　　first name 名字 second-hand 二手的 　　of the two/three 在两/三个当中 in twos and threes 三三两两 in one's thirties 在某人三十几岁的时候 　　 in the 21st century 在21世纪 a second/third… 再一……；又一……　　 in the 1970s 在二十世纪七十年代 第 ‹#› 页 课时3 语法 返回目录 (　　)1．(2023·山东期末)The girl is _______ years old.Today is her _______ birthday. A．nine；nine B．ninth；ninth C．ninth；nine D．nine；ninth (　　)2．(2023·天津期末)My little brother was born in _______．He will celebrate his _______ birthday next week. A．1990; eighteen B．1990s; eighteenth C．the 1990s; eighteen D．the 1990s; eighteenth D D 第 ‹#› 页 课时3 语法 返回目录 (　　)3．(2022·吉林期中)My mother will be _______ years old next week．I'm planning to buy a gift for her _______ birthday. A．fourty; fourtieth B．forty; fortieth C．fourty; fortieth D．forty; fourtieth (　　)4．(2022·辽宁期中)In the early _______ century, the first trains began to carry passengers. A．nineteenth B．nineteen C．nine D．ninetieth B A 第 ‹#› 页 课时3 语法 返回目录 (　　)5．(2023·广东期末)There are _______ of students in our grade and _______ of them are girls. A．hundreds; two hundred B．hundred; two hundreds C．hundreds; two hundreds D．hundred; two hundred A 第 ‹#› 页 课时3 语法 返回目录 02 课时过关 用括号内所给词的适当形式填空。 1．It's said that about two ______ (three) of the earth is covered with water. 2．—Where is Class Five? —It is the _____ (five) classroom on the left. 3．We planted _________ (hundred) of trees last year. 4．_____ (ten) of thousands of students took the college entrance exam on time on the morning of June 7th in South China, though it rained heavily. thirds fifth hundreds Tens 第 ‹#› 页 课时3 语法 返回目录 5．To finish the task, we've tried three times, and after dinner we'll try a ______ (four) time. 6．—How old is your daughter? —Nine.We had a special party for her ______ (nine) birthday yesterday. 7．Unit Six is easy but the________ (seven) unit is difficult. 8．This tall building has twelve floors.And Tony lives on the _______ (twelve) floor. fourth ninth seventh twelfth 第 ‹#› 页 课时3 语法 返回目录 9．Linda's mother looks young, but actually she is in her_______ (sixty)． 10．—When did you start to collect stamps? —I got my_____ (one) stamp when I was seven years old. sixties first 第 ‹#› 页 课时3 语法 返回目录 请用be动词的正确形式填空。 1．A large amount of money _____ spent on pandemic prevention last year. 2．There ___ an amount of water in the tank. 3．A number of students _____ playing now. 4．The number of the boy students in our class __ very small. 5．9 minus 3 ___ 6. was is are is is 第 ‹#› 页 课时3 语法 返回目录 语法填空。 阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式，并将答案填在相应的答题位置上。 (2022·深圳第二实验学校期中)Fibonacci，an 1．_______(Italy)，brought the number zero，along with the rest of Arabic numbers，back from his travels to northern Africa.However，the history of zero 2．______ (go) far deeper into history.There are at least two discoveries (发现) or 3．__________ (invent) of zero.It's said that zero came from Italian goes inventions 第 ‹#› 页 课时3 语法 返回目录 a place of the Middle East.It first 4．_____(get) to Babylon between 400 BC and 300 BC.Before it developed in India，it went through northern Africa, 5．_____then crossed from Italy to Europe.At first，zero worked 6．____ a way to tell 1 from 10 or 100 to give 7．____ example of using Arabic numbers.But that was not a full zero.A full zero was a number by 8．_______( it)．It was the average (平均数) of －1 and 1.It began to be a number in India in the 9．_____( five) century AD.The second appearance of zero happened in Mayan culture，probably in the first few centuries AD.An even 10．_______(early) appearance of zero is used to mean an empty number about 4，000 to 5，000 years ago. got and as an itself fifth earlier 第 ‹#› 页 课时3 语法 返回目录 本节内容到此结束！ logo $$ Unit 2 Numbers 课时3 语法 【课时精讲】 1—5 DDBAA 【课时过关】 一、1．thirds 2．fifth 3．hundreds 4．Tens 5．fourth 6．ninth 7．seventh 8．twelfth 9．sixties 10．first 第 ‹#› 页 课时3 语法 返回首页 二、1．was 2．is 3．are 4．is 5．is 三、1—5 CACBC 6—10 CBACB 四、1．but 2．old 3．What 4．talk/speak 5．an 6．answers/ideas 7．because/and 8．with 9．young 10．hearing 第 ‹#› 页 课时3 语法 返回首页 本节内容到此结束！ logo $$