基数词与序数词-2025-2026学年七年级英语下册语法考点精讲（仁爱版）

7下仁爱版 【寒假专版】B版考点精讲 寒假专版 基数词与序数词 语法专项突破 考点精讲 考点一：基数词的基本构成与用法 规则：基数词表示数量，1-12为独立单词(one,two.twelve):l3-l9以-teen结尾(thirteen..nineteen): 20-90整十数以-y结尾(twenty..ninety):几十几由整十数加连字符“.”加个位数构成（如twenty- one):百位数由“基数词+hund山red”表示，百位与十位间可加and(美式英语常省略)。 例题1： (选择，仁爱七上期末真题改编)：There arestudents in our class.A.fivety B.fifty C. fifteen D.fiveteen(答案：B) 例题2：（填空）：My father is_(四十)years old.(答案：foty) 考点二：序数词的构成规则 规则：序数词表示顺序，一般在基数词后加-th:特殊变化需记忆：first(1st),second(2nd),third (3rd),fifh(5th),eighth(8th),ninth(9th),twelfth(12th):整十数序数词把y变ie加-th(如 twentieth):几十几的序数词，只将个位数变为序数词（如twenty--first)。 例题l:(选择，仁爱八上期末真题改编)：Today ismy_birthday.A.twelve B.twelvth C.twelfth D.twelves(答案：C) 例题2：（填空）：September is the(九)month of the year..(答案：ninth) 考点三：基数词与序数词的用法区别 规则：基数词用于表示数量，回答how many/much的提问；序数词用于表示顺序，前面一般加定 冠词the,回答which的提间，或用于日期（如May 1st)、楼层(the second floor)等。 例题l:(选择)：一low many books do you have?I have一A.third B.three C.the third D thirteen(答案：B) 例题2：（填空）：He lives on the(五)floor.(答案：fifh) 考点四：基数词表示年龄、时间、编号的用法 1 7下仁爱版 【寒假专版】 B版考点精讲 规则：表示年龄用“基数词+years old”或直接用基数词：表示时间（整点）用“基数词+o'clock”; 表示编号可用“序数词+名词”或“名词+基数词”（如the fifth lesson=-Lesson Five)。 例题l:(选择)：My sister is-years old.A.twelve B.twelfth C.the twelve D.the twelfth(答案： A) 例题2： (填空)：We have English class on_(周三)morning.(答案：Wednesday) 考点综合训练 一、单项选择 1.There are_days in a week.A.seven B.seventh C.the seven D.the seventh 2.My brother is in Grade.A.eight B.eighth C.the eight D.the eighth 3.-Which month is Christmas in?-It's in the month.A.twelve B.twelfth C.twelvth D.twelves 4.We need_eggs to make the cake.A.thirty five B.thirty-five C.thirty-fifth D.thirty five 5.This is my time to visit Beijing.A.one B.first C.the first D.once 6.There are_students in the music club.A.twenty two B.twenty-two C.twentieth-two D.twenty second 7.-How old is your cousin?-She is_.A.fifteen B.fifteenth C.the fifteen D.the fifteenth 8.Lesson is the most difficult in this book.A.Five B.Fifth C.the Five D.the Fifth 二、语法填空 l.My father is_(五十)years old. 2.February is the()month of the year. 3.There are(thirty)desks in our classroom. 4.He got the(one)prize in the competition. 5.Today is my grandma's(eighty)birthday. 6.We will have a party on the(twenty)of December 7.There are(seventeen)girls in our class. 8.This is the(three)time I've seen this movie. 三、句型转换 2 7下仁爱版 【寒假专版】 B版考点精讲 l.There are three books on the desk.(对划线部分提问) _books are there on the desk? 2.She is twelve years old.(对划线部分提问) -is she? 3.This is the fifth lesson.(改为同义句) This is Lesson_ 4.He lives on the sixth floor.(对划线部分提间) _does he live on? 5.We have eight classes every day.(对划线部分提间) _classes do you have every day? 四、篇章填空 Hello!My name is Lucy.I'm a student in Grade Seven.Today is my 1.(thirteen)birthday.My parents bought me a big cake.There are 2.-(fourteen)candles on it.I live on the 3.(five)floor of this building.My classroom is on the 4.-(two)floor.We have 5.(six)classes in the morning and 6.(three)in the afternoon.My favorite subject is English.Our English teacher is Miss Wang.She is 7.(thirty)years old.Today,we are going to learn Unit 8,Lesson 8.(eight).I think it will be interesting! 参考答案 一、单项选择 1.A2.B3.B4.B5.B6.B7.A8.A 二、语法填空 1.fifty 2.second 3.thirty 4.first 5.eightieth 6.twentieth 7.seventeen 8.third 三、句型转换 1.How many 2.How old 3.Five 4.Which floor 5.How many 四、篇章填空 1.thirteenth 2.fourteen 3.fifth 4.second 5.six 6.three 7.thirty 8.Eight 3