七年级上册名词单数变复数

1、七年级上册名词单数变复数第一页，共25页。This is an apple.That is my sister.These are apples.Those are my sisters.第二页，共25页。be动词表示动词表示“是是”，有三个：，有三个：am ,is, are.我（我（I）用）用am,你你(you )用用are,Is用于他用于他(he)、她、她(she)、它、它(it),单数后跟单数后跟is,复数人称全部都用复数人称全部都用are.单数复数weyoutheythesethoseIyouhe /she/ itthisthatamareisisisareareareareare第三

2、页，共25页。This is an orange.These are oranges.That is a pencil.Those are pencils.第四页，共25页。 This is my grandfather. This is my grandmother. These are my grandparents.This is my mother.This is my father. This is my brother. This is my brother, too.These are my parents. These are my brothers.第五页，共25页。把下列句

3、子单数变成复数：把下列句子单数变成复数：1.This is a book.2.That is an orange.3. This is my pencil .4.That is her quilt.5.Is this your watch?6.Is that his dictionary?7.It is my map.8.Thats his ring. These are books.Those are oranges.These are my pencils.Those are her quilts.Are these your watches?Are those his dictionar

4、ies?They are maps. Those are his rings.第六页，共25页。把下列句子变成复数。1.This is my sister.2. This is her cousin.3. That is his brother.4. That is my grandparent.把下列句子变成单数。1 These are my friends.2. Those are his parents.3.Those are her sisters.4. These are Li Lings brothers.These are my sisters.These are her cou

5、sins.Those are his brothers.Those are my grandparents.This is my friend.That is his parent.That is her sister.This is Li Lings brother.第七页，共25页。-What are these?-Whats this?-Its a pen.-They are pens.第八页，共25页。-What are those?-Whats that?-Its an English book.-They are English books.第九页，共25页。backpackswa

6、tchesorangespens-Whatre these ?-Theyre .第十页，共25页。mapscaseskeys-Whatre those ?-Theyre .第十一页，共25页。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.加加s, x, ch, shs, x, ch, sh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, ,先改先改y y为为i i, , 再加再加eses (mothers, fathers, sisters, brothers)( buses, boxes, watch

7、es )( family - families dictionary - dictionaries ) 区别区别 key keys boy - boys第十二页，共25页。( (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, women1.加加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

8、 / 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） children（男人，妇女）男人，妇女）第十三页，共25页。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/ ts /，在在 / d /后读后读 / dz /desks maps

9、brothers pensclasses, watches, orangescats, friends 第十四页，共25页。pen desk key box knife card orange boy friend parent mother father sister brother son daughter cousin family child man pencil case sheepssssesknivessssssssssssfamilieschildrenmenssheep第十五页，共25页。句子单数变复数句子单数变复数 This is a book. That is an er

10、aser. It is a red apple. I am a boy. He / She is a teacher.1. Whats this ? These are books.Those are erasers.They are red apples.We are boys.They are teachers.Whatre these ?第十六页，共25页。this that I you he / she / it am / is thesethoseweyoutheyare 单数单数 复数复数第十七页，共25页。一、写出下列单词的复数一、写出下列单词的复数 I- 2.am- 3.he

11、4.pencil- 5.watch- 6.dictionary- 7. man- 8.it- 1. 9. parent - 10.boy wearetheypencils watchesdictionaries men they parentsboys第十八页，共25页。二、句型转换二、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.第十九页，共25页。2.That is a car.1）变否

12、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.第二十页，共25页。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 not an English dictionary.Is that an English dictionary?No, it isnt.第二十一页，共25页。4.Her family names Smith.5.My jacket is light blue.6. is, th

13、at, 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.第二十二页，共25页。句型转换句型转换1.1.Whats this ? Whats this ? 复数复数 Whatre these ?2.Hes a Chinese boy. 2.Hes a Chinese boy. 复数复数Theyre Chinese boys.第二十三页，共25页。 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