Unit 3 语法专项——可数名词&There be句型 课件 2025-2026学年仁爱科普版英语七年级上册

教学课件 新仁爱版七年级上册 Unit 3 语法专项——可数名词&There be句型 全解精讲+分层练习 1 学习目标 掌握可数名词的定义、单复数变化规则及不规则变化 理解There be句型的含义、基本结构和就近原则 熟练运用可数名词单复数和There be句型完成各类习题 区分易混知识点,纠正常见语法错误 能综合运用本单元语法进行简单的句式转换和表达 可数名词 - 定义与分类 可数名词是可以用数目计算、有单数和复数两种形式的名词 单数:表示数量为“一个”的可数名词,前常加a/an 复数:表示数量为“两个或以上”的可数名词,形式有变化 示例:单数(a book 一本书),复数(two books 两本书) 补充:与不可数名词(如water)区分,不可数名词无复数 可数名词 - 复数变化规则(一) 变化类型 规则 例句(单数 复数) 一般情况 词尾直接加 -s pen pens, desk desks, bag bags 以s/x/ch/sh结尾 词尾加 -es bus buses, box boxes, watch watches 可数名词 - 复数变化规则(二) 变化类型 规则 例句(单数 复数) 以辅音字母+y结尾 变y为i,再加 -es city cities, baby babies, family families 以元音字母+y结尾 直接加 -s boy boys, toy toys, day days 可数名词 - 复数变化规则(三) 变化类型 规则 例句(单数 复数) 以f/fe结尾 变f/fe为v,再加 -es knife knives, leaf leaves, wife wives 以o结尾 有生命加es,无生命加s tomato tomatoes, photo photos, potato potatoes 可数名词 - 不规则复数变化(重点记忆) 部分可数名词复数无规律,需单独记忆,考试高频出现 常见不规则变化: man men(男人), woman women(女人) child children(孩子), foot feet(脚) tooth teeth(牙齿), mouse mice(老鼠) sheep sheep(绵羊), fish fish(鱼,数量)/fishes(种类) 可数名词 - 核心考点(一) 可数名词单数前必须加a/an(泛指)或the(特指) 例:a pen(一支钢笔),the red pen(那支红色钢笔) 复数前可加some(一些)、many(许多)、a few(几个)修饰 例:some books(一些书),many apples(许多苹果) 易错点:单数名词前不能直接用数词修饰(误:one book正确) 可数名词 - 核心考点(二) 单复数同形的词(如sheep、fish),数量变化时形式不变 例:one sheep(一只绵羊),three sheep(三只绵羊) 复合名词复数:一般变后面的名词,特殊情况变前面 例:apple tree apple trees,woman teacher women teachers 提示:复合名词变复数,先看中心词,再变形式 可数名词 - 小练习1 - 写出下列名词的复数形式 1. book 2. box 3. baby 4. knife 5. tomato 6. child 7. foot 8. sheep 9. photo 10. man 11. toy 12. leaf books boxes babies knives tomatoes children feet sheep photos men toys leaves 可数名词 - 小练习2 - 选词填空 1. There are three _ (apple) on the table. 2. I have two _ (knife) in my schoolbag. 3. The _ (child) are playing games in the park. 4. There are many _ (bus) on the street. 5. She buys five _ (tomato) for dinner. apples knives children buses tomatoes 可数名词 - 小练习3 - 单项选择 1. I see two _ in the zoo. They are very cute. A. monkey B. monkeys C. monkeyes D. monkeies 2. There are some _ on the plate. They are red. A. banana B. bananas C. bananes D. banan 3. How many _ do you have? I have three. A. book B. books C. a book D. bookes B B B 可数名词 - 小练习4 - 按要求改写句子 1. This is a potato.(改为复数句) 2. There is a child in the room.(改为复数句) 3. These are boxes.(改为单数句) 4. Those are women teachers.(改为单数句) 5. That is an apple tree.(改为复数句) These are potatoes. There are some children in the room. This is a box. That is a woman teacher. Those are apple trees. 可数名词 - 小练习5 - 判断正误并改正 1. There are five sheeps on the farm. ( ) 改正:_ 2. I have three tooth and a toothbrush. ( ) 改正:_ 3. These are apple trees. ( ) 改正:_ 4. He has two baby. ( ) 改正:_ F There are five sheep on the farm. F I have three teeth and a toothbrush. T F He has two babies. There be句型 - 定义与核心区别 There be句型表示“某地存在某人或某物”,强调“存在” 核心区别:There be表“存在”,have表“拥有”(主语是人) 例:There is a book on the desk.(桌上有一本书,存在) 例:I have a book.(我有一本书,拥有) 提示:不能说There have...,这是最常见的错误 There be句型 - 基本结构 基本结构:There be + 主语 + 地点状语(某地有某物) be动词的单复数由“就近原则”决定 主语是单数/不可数名词 用is 主语是复数 用are 例:There is a pen on the desk.(单数主语用is) 例:There are two pens on the desk.(复数主语用are) There be句型 - 核心考点(就近原则) 就近原则:be动词的单复数由离它最近的主语决定 多个主语并列时,只看第一个主语的单复数 例:There is a pen and two books on the desk.(近主语a pen用is) 例:There are two books and a pen on the desk.(近主语two books用are) 易错点:不要被后面的复数主语影响be动词形式 There be句型 - 句式结构(肯定句+否定句) 句式 结构 例句 肯定句 There is/are + 主语 + 地点 There is a cat under the tree. 否定句 There is/are + not + 主语 + 地点 There isn’t a cat under the tree. 补充:否定句中,some要改为any(例:There aren’t any apples.) There be句型 - 句式结构(疑问句+回答) 句式 结构 例句及回答 一般疑问句 Is/Are + There + 主语 + 地点? —Is there a cat? —Yes, there is./No, there isn’t. 特殊疑问句 特殊疑问词 + is/are + There + 地点? —How many books are there? —There are three. There be句型 - 核心考点(补充) 1. 不可数名词(water, rice, bread)作主语,be动词用is 例:There is some water in the bottle. 2. 特殊疑问句中,how many后接可数名词复数 例:How many students are there in the class? 3. 肯定句中用some,否定句、疑问句中用any(表“一些”) There be句型 - 小练习1 - 用is/are填空 1. _ there a book on the desk? 2. _ there two pens in your pencil box? 3. There _ some milk in the bottle. 4. There _ a pen and two pencils on the table. 5. There _ two pencils and a pen on the table. 6. _ there any trees in the park? Is Are is is are Are There be句型 - 小练习2 - 单项选择 1. There _ a lot of rice in the bag. It’s enough. A. is B. are C. have D. has 2. —How many _ are there in the classroom? —Forty. A. student B. students C. a student D. studentes 3. There _ a pen, a ruler and an eraser in my pencil box. A. is B. are C. have D. has A B A There be句型 - 小练习3 - 按要求改写句子 1. There is a map on the wall.(改为否定句) 2. There are some flowers in the garden.(改为一般疑问句) 3. There are three books on the desk.(对划线部分提问) 4. There is a bird in the tree.(改为复数句) 5. Are there any chairs in the room?(作否定回答) There isn’t a map on the wall. Are there any flowers in the garden? How many books are there on the desk? There are some birds in the tree. No, there aren’t. There be句型 - 小练习4 - 根据汉语提示完成句子 1. 桌子上有一本书和两支钢笔。 _ _ a book and two pens on the desk. 2. 瓶子里没有任何果汁。 _ _ _ juice in the bottle. 3. 公园里有很多树吗? _ _ many trees in the park? There is There isn’t any Are there There be句型 - 小练习5 - 判断正误并改正 1. There have a pencil in my pencil box. ( ) 改正:_ 2. There are some bread on the plate. ( ) 改正:_ 3. There is a pen and two books on the desk. ( ) 改正: _ 4. Are there any apple on the table? ( ) 改正:_ F There is a pencil in my pencil box. F There is some bread on the plate. T F Are there any apples on the table? 语法综合练习1 - 选词填空 1. There _ (is/are) three _ (book) on the desk. 2. There _ (is/are) some _ (water) in the bottle. 3. How many _ (child) are there? There _ (is/are) five. 4. There _ (is/are) a _ (knife) and two _ (fork) on the plate. are books is water children are is knife forks 语法综合练习2 - 单项选择 1. There _ two _ and a pen in my bag. A. is; book B. are; books C. is; books D. are; book 2. —How many _ are there in the zoo? —Ten. A. monkey B. monkeys C. monkeies D. a monkey 3. There _ some milk and two eggs on the table. A. is B. are C. have D. has B B A 语法综合练习3 - 句式转换 1. There is a tomato on the plate.(改为复数句) 2. There are some children in the park.(改为否定句) 3. There are four knives on the desk.(对划线部分提问) 4. Is there a book in the bag?(作肯定回答并改为复数句) There are some tomatoes on the plate. There aren’t any children in the park. How many knives are there on the desk? Yes, there is. There are some books in the bag. 易混知识点对比 易混点 正确用法 错误示例 There be vs have There be表存在,have表拥有 There have a book. 可数名词复数 sheep单复数同形,child children five sheeps, three childs some vs any 肯定句用some,否定/疑问句用any There aren’t some apples. 语法核心考点梳理(可数名词) 可数名词有单复数,复数变化分规则和不规则两类 规则变化:一般加s,s/x/ch/sh/o加es,辅音+y变i加es 不规则变化需单独记忆(man men, child children等) 单数前加a/an/the,复数前可加some、many等修饰 语法核心考点梳理(There be句型) 表“存在”,结构:There be + 主语 + 地点,不用have be动词遵循就近原则,单数/不可数用is,复数用are 否定句加not,some变any;疑问句be动词提前 特殊疑问句用how many(接复数)提问数量 学习总结 掌握可数名词单复数变化规则及不规则变化,能正确运用 理解There be句型的含义和就近原则,熟练掌握四种句式 区分There be和have的用法,纠正常见语法错误 能综合运用本单元语法完成选词、选择、句式转换等习题 教学课件 Unit 3 语法专项——可数名词&There be句型 Thank you for listening! 33 $