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1、名词名词单数单数变变复数复数-This is a pen.-These are pens.-Thats an English book.-Those are English books.backpackswatchesorangespens-Whatre these ?-Theyre .mapscaseskeys-Whatre those ?-Theyre .名词单数变复数名词单数变复数( (一一) )规则变化规则变化: :1.1.加加s s 2.2.以以s, x, s, x, chch, , shsh结尾的名词加结尾的名词加eses3.3.以辅音字母加以辅音字母加y y结尾的名词结尾的名词,
2、 ,先改先改y y为为i, i, 再加再加eses (mothers, fathers, sisters, brothers)( buses, boxes, watches )( family - families dictionary - dictionaries ) 区别区别 key keys boy boys toy-toys名词单数变复数后名词单数变复数后s / es 的读音的读音1.在清辅音后读在清辅音后读 / s /2.在元音和浊辅音后读在元音和浊辅音后读 / z /3.在在/ s / / z / / / / / t / / d /后后 读读 / iz /4.在在/ t /后读后读
3、/ ts /，在在 / d /后读后读 / dz /desks mapsbrothers pensclasses, watches, orangescats, friends Game: applesbuseswatchesleavesbabiestomatoespencil-boxes boysknives applebuswatchleafebabytomatopencil-boxboyknife( (二二) )不规则变化不规则变化: :4.单复数同形单复数同形(不变不变): sheep(绵羊绵羊) deer(鹿鹿) fish(鱼鱼) 2.man, woman men, women wom
4、en doctors 1.以以o结尾两菜加结尾两菜加es: potatoes (土豆土豆) tomatoes (西红柿西红柿)Chinese(中国人中国人) Japanese(日本人日本人) 6. oo ee： foot(脚脚) tooth(牙齿牙齿) goose(鹅鹅)5. 以以 f / fe结尾的结尾的,变变f为为v, 再加再加eswife(妻子妻子) knife (小刀小刀) shelf (架子架子) leaf (叶子叶子) wolf (狼狼)3. child（孩子）孩子） childrenpen desk key box knife card orange boy friend par
5、ent mother father sister brother son daughter cousin family child man pencil case sheepssssesknivessssssssssssfamilieschildrenmenssheep句子单数变复数句子单数变复数1. This is a book. 2. That is an eraser.3. It is a red apple. 4. I am a boy.5. He / She is a teacher.6. Whats this ? These are books.Those are erasers.
6、They are red apples.We are boys.They are teachers.Whatre these ?this that I you he / she / it am / is thesethoseweyoutheyare 单数单数 复数复数一、写出下列单词的复数一、写出下列单词的复数1.I- 2.am- 3.he 4.pencil- 5.watch- 6.dictionary- 7. man- 8.it- 9. parent - 10.boy wearetheypencils watchesdictionaries men they parentsboys二、句型转
7、换二、句型转换1.This is my mother. 1）变否定句）变否定句 2）变一般疑问句，并作肯定回答）变一般疑问句，并作肯定回答This is not my mother.Is this your mother ?Yes, it / she is.2.That is a car.1）变否定句）变否定句 2）划线提问）划线提问3) 变复数句变复数句That is not a car.Whats that?Those are cars.3.Thats an English dictionary.1）变否定句）变否定句 2）变一般疑问句，并作否定回答）变一般疑问句，并作否定回答Thats
8、not an English dictionary.Is that an English dictionary?No, it isnt.4.Her family names Smith.5.My jacket is light blue.6. is, that, brother, my, Dave 组词成句组词成句划线提问划线提问划线提问划线提问Whats her family name?What color is your jacket?That is my brother , Dave.句型转换句型转换1.1.Whats this ? Whats this ? 复数复数 Whatre th
9、ese ?2.Hes a Chinese boy. 2.Hes a Chinese boy. 复数复数Theyre Chinese boys. 3.This is a bike. 3.This is a bike. 否定句否定句复数句复数句一般疑问句，并作肯定回答一般疑问句，并作肯定回答This is not a bike.These are bikes.Is this a bike ?Yes, it is.4.4.That is my brother.That is my brother. 否定句否定句一般疑问句，并作否定回答一般疑问句，并作否定回答That is not my brother.Is that your brother ?No, it / he isnt.5.5.These are These are dictionariesdictionaries. .单数单数一般疑问句一般疑问句, ,并作肯定回答并作肯定回答划线提问划线提问 This is a dictionary.Are these dictionaries ? Yes, they are.What are these ? Practice: 写出下列名词的复数形式写出下列名词的复数形式 box caseorangefamilyphototomatobabycountryknifeClassboy